QL request; 257 Roberts; 115 gr; looking for 2950 fps

[salmonchaser]

I finally was able to collect a #1A in 257 Roberts, been trying to get one for about three years. I should have the rifle in hand by this time next week, need to get to loading. I appreciate the help.

 

[D21ALASKA]

Doc ran one for me awhile back on that combo. I'm sure it'll pop up if you do a search. I was able to get just about 2950 with RL22 out of a 22" barrel. That was an over book load though as I can load the cartridges super long in my mauser.

 

[DrMike]

Cartridge : .257 Roberts +P+ (not SAAMI)
Bullet : .257, 115, Nosler BalTip 25115
Useable Case Capaci: 47.503 grain H2O = 3.084 cm³
Cartridge O.A.L. L6: 2.775 inch = 70.49 mm
Barrel Length : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 58000 psi, or 399 MPa
or a maximum loading ratio or filling of 112 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

8 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-26 *C 106.1 49.9 3.24 3075 99.8 58000 13100 1.081 ! Near Maximum !
Norma MRP *C 106.6 48.7 3.16 3035 98.1 58000 12948 1.083 ! Near Maximum !
ReloadSwiss RS 60 *T 96.5 44.3 2.87 3024 100.0 58000 11695 1.077 ! Near Maximum !
Vihtavuori N560 *C 108.1 48.4 3.14 3011 94.6 58000 12919 1.082 ! Near Maximum !
ReloadSwiss RS 70 *C 99.3 46.3 3.00 3010 99.6 58000 12211 1.078 ! Near Maximum !
Elcho 17 95.5 43.9 2.84 3001 100.0 58000 11623 1.084 ! Near Maximum !
Alliant Reloder-17 *T 95.5 43.9 2.84 3001 100.0 58000 11623 1.084 ! Near Maximum !
Raufoss RA15 *C 108.5 48.0 3.11 2999 96.8 58000 12591 1.086 ! Near Maximum !
Alliant Reloder-22 *C 108.5 48.0 3.11 2999 96.8 58000 12591 1.086 ! Near Maximum !
Bofors RP5/NP ~approximation 108.5 48.0 3.11 2999 96.8 58000 12591 1.086 ! Near Maximum !
Accurate MAGPRO 108.6 50.5 3.28 2999 92.8 58000 12892 1.086 ! Near Maximum !
Bofors RP36 ZT *C *T 110.7 47.4 3.07 2997 100.0 58000 11629 1.087 ! Near Maximum !
Alliant Reloder-23 *C *T 110.7 47.4 3.07 2997 100.0 58000 11629 1.087 ! Near Maximum !
Winchester WXR 111.4 48.3 3.13 2997 96.6 58000 12591 1.086 ! Near Maximum !
Bofors RP15 111.4 48.3 3.13 2997 96.6 58000 12591 1.086 ! Near Maximum !
ReloadSwiss RS 76 *C 112.0 52.8 3.42 2993 97.3 53962 13642 1.110 ! Near Maximum !
SNPE Vectan SP 12 110.5 51.7 3.35 2992 95.4 58000 12695 1.076 ! Near Maximum !
PB Clermont PCL 517 110.6 51.7 3.35 2992 95.3 58000 12703 1.076 ! Near Maximum !
Alliant Reloder-16 *C *T 100.4 42.8 2.77 2988 99.9 58000 11617 1.079 ! Near Maximum !
Bofors RL16 TZ *C *T 100.4 42.8 2.77 2988 99.9 58000 11617 1.079 ! Near Maximum !
IMR 7828 SSC 106.3 47.8 3.10 2987 94.9 58000 12486 1.076 ! Near Maximum !
Vihtavuori N555 *C*T 107.5 46.2 2.99 2985 99.9 58000 11845 1.109 ! Near Maximum !
IMR 7828 112.0 47.7 3.09 2974 94.7 57264 12442 1.083 ! Near Maximum !
Somchem S365 102.5 44.6 2.89 2974 100.0 58000 11114 1.096 ! Near Maximum !
ADI AR 2213 107.1 47.4 3.07 2970 94.7 58000 12322 1.077 ! Near Maximum !
ReloadSwiss RS 62 99.0 45.4 2.94 2968 99.6 58000 11715 1.102 ! Near Maximum !
Ramshot Magnum 107.9 51.4 3.33 2966 97.2 58000 12058 1.080 ! Near Maximum !
PB Clermont PCL 518 101.0 45.7 2.96 2960 98.6 58000 11844 1.092 ! Near Maximum !
PB Clermont PCL 511 96.9 45.2 2.93 2958 98.8 58000 11787 1.093 ! Near Maximum !
Ramshot Hunter 100.2 45.3 2.93 2957 98.8 58000 11770 1.093 ! Near Maximum !
Rottweil R905 109.5 47.6 3.08 2956 94.5 58000 12097 1.088 ! Near Maximum !
Alliant Reloder-19 *C 104.7 45.8 2.97 2951 96.6 58000 11932 1.087 ! Near Maximum !
Alliant Reloder-25 *C 112.0 48.8 3.16 2951 98.9 53207 12465 1.121 ! Near Maximum !
Winchester 760 94.5 43.8 2.84 2951 98.2 58000 11744 1.096 ! Near Maximum !
Hodgdon H414 94.5 43.8 2.84 2951 98.2 58000 11744 1.096 ! Near Maximum !
ADI AR 2209 103.9 45.3 2.93 2949 96.4 58000 11836 1.081 ! Near Maximum !
Vihtavuori N565 *C*T 112.0 50.4 3.26 2947 94.2 54782 12660 1.124 ! Near Maximum !
ADI AP 2214 110.9 50.4 3.27 2946 94.6 58000 12139 1.077 ! Near Maximum !
Bofors RP14 ~approximation 105.4 46.2 2.99 2945 96.5 58000 11842 1.088 ! Near Maximum !
Norma URP *C 99.7 43.2 2.80 2943 99.7 58000 11381 1.099 ! Near Maximum !
Bofors RP19 ~approximation 99.7 43.2 2.80 2942 99.7 58000 11378 1.099 ! Near Maximum !
Accurate 4350 99.1 43.4 2.81 2940 99.7 58000 11394 1.116 ! Near Maximum !
Vihtavuori N550 *C*T 96.7 43.3 2.80 2940 99.6 58000 11492 1.104 ! Near Maximum !
Hodgdon LVR 97.0 42.5 2.75 2935 99.4 58000 11320 1.096 ! Near Maximum !
IMR 4831 104.6 43.9 2.84 2926 99.7 58000 11158 1.108 ! Near Maximum !
Raufoss RA4 102.4 44.8 2.90 2925 96.3 58000 11588 1.089 ! Near Maximum !
Norma 204 *C 99.1 44.8 2.90 2925 96.3 58000 11588 1.089 ! Near Maximum !
Bofors RP4 ~approximation 102.4 44.8 2.90 2925 96.3 58000 11588 1.089 ! Near Maximum !
Bofors RP5 NT *C ~approximation 110.6 49.4 3.20 2925 92.0 58000 11950 1.083 ! Near Maximum !
Somchem S385 105.0 46.5 3.01 2919 97.5 58000 11498 1.107 ! Near Maximum !
Accurate 3100 108.5 47.5 3.08 2915 98.8 58000 11329 1.117 ! Near Maximum !
Hodgdon H4831 *T 109.9 46.8 3.03 2914 94.1 58000 11580 1.086 ! Near Maximum !
Hodgdon H4831 SC *T 105.7 46.8 3.03 2914 94.1 58000 11580 1.086 ! Near Maximum !
Hodgdon Hybrid 100V 102.4 43.4 2.81 2911 100.0 58000 10536 1.097 ! Near Maximum !
Bofors RP4 NT *C ~approximation 99.9 44.4 2.88 2908 97.9 58000 11292 1.102 ! Near Maximum !
Winchester Supreme 780 103.1 47.6 3.09 2903 96.3 58000 11305 1.091 ! Near Maximum !
Vihtavuori N165 *C 110.4 47.8 3.10 2902 97.1 58000 11186 1.095 ! Near Maximum !
Vihtavuori N160 *C 96.7 43.2 2.80 2901 99.6 58000 10787 1.101 ! Near Maximum !
Hodgdon H380 91.7 41.0 2.66 2895 99.5 58000 10924 1.111 ! Near Maximum !
Bofors RP3 92.2 40.8 2.65 2895 100.0 58000 10580 1.121 ! Near Maximum !
Norma 203 old 92.2 40.8 2.65 2895 100.0 58000 10580 1.121 ! Near Maximum !
Shooters World SW4350 99.0 42.9 2.78 2892 98.3 58000 11120 1.112 ! Near Maximum !
IMR 4955 Enduron *C*T 106.5 45.4 2.94 2878 94.4 58000 11196 1.093 ! Near Maximum !
Shooters World Long Rifle 97.7 41.8 2.71 2872 99.0 58000 10759 1.112 ! Near Maximum !
IMR 4007 SSC 93.4 41.5 2.69 2867 97.5 58000 10849 1.107 ! Near Maximum !
Accurate 4064 91.7 39.3 2.55 2858 100.0 58000 9910 1.142 ! Near Maximum !

 

[DrMike]

Cartridge : .257 Roberts +P+ (not SAAMI)
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 47.636 grain H2O = 3.093 cm³
Cartridge O.A.L. L6: 2.775 inch = 70.49 mm
Barrel Length : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 58000 psi, or 399 MPa
or a maximum loading ratio or filling of 112 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

8 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-26 *C 107.2 50.6 3.28 3134 99.6 58000 13164 1.060 ! Near Maximum !
Norma MRP *C 107.7 49.3 3.20 3093 97.7 58000 12965 1.062 ! Near Maximum !
ReloadSwiss RS 60 *T 97.5 44.9 2.91 3087 100.0 58000 11791 1.056 ! Near Maximum !
ReloadSwiss RS 70 *C 100.3 46.9 3.04 3069 99.3 58000 12263 1.057 ! Near Maximum !
Vihtavuori N560 *C 109.2 49.0 3.17 3066 93.9 58000 12891 1.062 ! Near Maximum !
Elcho 17 96.6 44.5 2.88 3064 100.0 58000 11722 1.062 ! Near Maximum !
Alliant Reloder-17 *T 96.6 44.5 2.88 3064 100.0 58000 11722 1.062 ! Near Maximum !
Bofors RP36 ZT *C *T 111.9 48.1 3.11 3059 100.0 58000 11717 1.066 ! Near Maximum !
Alliant Reloder-23 *C *T 111.9 48.1 3.11 3059 100.0 58000 11717 1.066 ! Near Maximum !
Raufoss RA15 *C 109.6 48.6 3.15 3056 96.2 58000 12589 1.065 ! Near Maximum !
Alliant Reloder-22 *C 109.6 48.6 3.15 3056 96.2 58000 12589 1.065 ! Near Maximum !
Bofors RP5/NP ~approximation 109.6 48.6 3.15 3056 96.2 58000 12589 1.065 ! Near Maximum !
Accurate MAGPRO 109.6 51.2 3.32 3053 92.1 58000 12844 1.066 ! Near Maximum !
Alliant Reloder-16 *C *T 101.4 43.4 2.81 3049 99.8 58000 11699 1.058 ! Near Maximum !
Bofors RL16 TZ *C *T 101.4 43.4 2.81 3049 99.8 58000 11699 1.058 ! Near Maximum !
Vihtavuori N555 *C*T 108.7 46.8 3.03 3047 99.8 58000 11930 1.087 ! Near Maximum !
SNPE Vectan SP 12 111.4 52.2 3.38 3042 94.6 58000 12644 1.057 ! Near Maximum !
PB Clermont PCL 517 111.6 52.3 3.39 3041 94.5 58000 12651 1.057 ! Near Maximum !
IMR 7828 SSC 107.3 48.4 3.14 3040 94.2 58000 12453 1.057 ! Near Maximum !
Somchem S365 103.6 45.3 2.93 3039 100.0 58000 11210 1.074 ! Near Maximum !
Bofors RP15 112.0 48.6 3.15 3039 95.8 57060 12533 1.073 ! Near Maximum !
Winchester WXR 112.0 48.6 3.15 3039 95.8 57060 12533 1.073 ! Near Maximum !
ReloadSwiss RS 62 100.1 46.1 2.98 3029 99.4 58000 11782 1.081 ! Near Maximum !
ADI AR 2213 108.0 48.0 3.11 3022 94.0 58000 12285 1.057 ! Near Maximum !
PB Clermont PCL 518 102.0 46.3 3.00 3020 98.2 58000 11877 1.070 ! Near Maximum !
PB Clermont PCL 511 98.0 45.8 2.97 3019 98.5 58000 11827 1.071 ! Near Maximum !
Ramshot Magnum 108.8 52.0 3.37 3017 96.6 58000 12036 1.060 ! Near Maximum !
Ramshot Hunter 101.2 45.9 2.97 3017 98.5 58000 11810 1.071 ! Near Maximum !
Rottweil R905 110.6 48.2 3.12 3011 93.9 58000 12074 1.067 ! Near Maximum !
Hodgdon H414 95.5 44.4 2.87 3010 97.7 58000 11777 1.074 ! Near Maximum !
Winchester 760 95.5 44.4 2.87 3010 97.7 58000 11777 1.074 ! Near Maximum !
Alliant Reloder-19 *C 105.7 46.4 3.01 3009 96.1 58000 11934 1.066 ! Near Maximum !
ADI AR 2209 104.9 45.8 2.97 3004 95.8 58000 11830 1.060 ! Near Maximum !
Norma URP *C 100.7 43.7 2.83 3004 99.5 58000 11447 1.078 ! Near Maximum !
Bofors RP19 ~approximation 100.7 43.8 2.84 3003 99.5 58000 11444 1.078 ! Near Maximum !
ReloadSwiss RS 76 *C 112.0 52.9 3.43 3003 96.0 52047 13486 1.109 ! Near Maximum !
Accurate 4350 100.2 44.0 2.85 3002 99.5 58000 11466 1.094 ! Near Maximum !
Bofors RP14 ~approximation 106.4 46.7 3.03 3001 96.0 58000 11840 1.067 ! Near Maximum !
Vihtavuori N550 *C*T 97.7 43.9 2.84 3001 99.4 58000 11555 1.083 ! Near Maximum !
Hodgdon LVR 98.0 43.0 2.79 2996 99.1 58000 11377 1.074 ! Near Maximum !
ADI AP 2214 111.8 51.0 3.30 2995 93.8 58000 12082 1.058 ! Near Maximum !
IMR 7828 112.0 47.8 3.10 2994 93.5 55389 12286 1.080 ! Near Maximum !
IMR 4831 105.7 44.5 2.88 2986 99.6 58000 11226 1.086 ! Near Maximum !
Bofors RP4 ~approximation 103.4 45.4 2.94 2982 95.7 58000 11588 1.068 ! Near Maximum !
Norma 204 *C 100.1 45.4 2.94 2982 95.7 58000 11588 1.068 ! Near Maximum !
Raufoss RA4 103.4 45.4 2.94 2982 95.7 58000 11588 1.068 ! Near Maximum !
Bofors RP5 NT *C ~approximation 111.5 49.9 3.24 2976 91.3 58000 11889 1.063 ! Near Maximum !
Somchem S385 106.0 47.1 3.05 2975 97.1 58000 11512 1.086 ! Near Maximum !
Hodgdon Hybrid 100V 103.5 44.0 2.85 2973 100.0 58000 10626 1.075 ! Near Maximum !
Accurate 3100 109.6 48.1 3.12 2973 98.4 58000 11360 1.096 ! Near Maximum !
Alliant Reloder-25 *C 112.0 48.9 3.17 2971 98.1 51390 12396 1.118 ! Near Maximum !
Hodgdon H4831 *T 110.9 47.3 3.07 2968 93.4 58000 11548 1.065 ! Near Maximum !
Hodgdon H4831 SC *T 106.6 47.3 3.07 2968 93.4 58000 11548 1.065 ! Near Maximum !
Bofors RP4 NT *C ~approximation 100.9 45.0 2.92 2965 97.4 58000 11312 1.081 ! Near Maximum !
Vihtavuori N565 *C*T 112.0 50.5 3.27 2964 92.9 52588 12490 1.123 ! Near Maximum !
Vihtavuori N160 *C 97.7 43.8 2.84 2961 99.4 58000 10847 1.079 ! Near Maximum !
Vihtavuori N165 *C 111.5 48.4 3.14 2958 96.6 58000 11188 1.074 ! Near Maximum !
Winchester Supreme 780 104.1 48.2 3.12 2957 95.8 58000 11292 1.070 ! Near Maximum !
Bofors RP3 93.2 41.4 2.68 2957 100.0 58000 10674 1.099 ! Near Maximum !
Norma 203 old 93.2 41.4 2.68 2957 100.0 58000 10674 1.099 ! Near Maximum !
Hodgdon H380 92.7 41.6 2.69 2954 99.2 58000 10981 1.089 ! Near Maximum !
Rottweil R903 95.3 41.4 2.68 2951 100.0 58000 10600 1.099 ! Near Maximum !
Shooters World SW4350 100.0 43.4 2.81 2950 97.9 58000 11151 1.091 ! Near Maximum !
Lovex S070 100.0 43.4 2.81 2950 97.9 58000 11151 1.091 ! Near Maximum !
Rottweil R904 103.9 45.0 2.92 2945 94.5 58000 11200 1.072 ! Near Maximum !
Somchem S355 95.3 40.9 2.65 2944 100.0 58000 10579 1.093 ! Near Maximum !
IMR 4955 Enduron *C*T 107.5 45.9 2.97 2932 93.8 58000 11174 1.073 ! Near Maximum !
Shooters World Long Rifle 98.6 42.4 2.75 2931 98.7 58000 10801 1.091 ! Near Maximum !
IMR 4007 SSC 94.3 42.0 2.72 2924 97.1 58000 10867 1.086 ! Near Maximum !
Accurate 4064 92.7 39.8 2.58 2922 100.0 58000 10003 1.120 ! Near Maximum !

 

[SJB358]

That’s good stuff and only 58k PSI so any of those top loads aren’t going to tear anything up.

 

[Bruce Mc]

I would like to see a quick load pushed to 62000 psi.

 

[DrMike]

Cartridge : .257 Roberts +P+ (not SAAMI)
Bullet : .257, 110, Nosler AccuBond 53742
Useable Case Capaci: 47.636 grain H2O = 3.093 cm³
Cartridge O.A.L. L6: 2.775 inch = 70.49 mm
Barrel Length : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 62000 psi, or 427 MPa
or a maximum loading ratio or filling of 112 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

6 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-26 *C 108.9 51.4 3.33 3197 99.8 62000 13255 1.028 ! Near Maximum !
Norma MRP *C 109.6 50.2 3.25 3157 98.3 62000 13142 1.030 ! Near Maximum !
ReloadSwiss RS 60 *T 99.5 45.8 2.97 3146 100.0 62000 11882 1.025 ! Near Maximum !
Vihtavuori N560 *C 111.2 49.9 3.23 3132 94.9 62000 13135 1.030 ! Near Maximum !
ReloadSwiss RS 70 *C 102.2 47.8 3.10 3131 99.7 62000 12398 1.026 ! Near Maximum !
Alliant Reloder-17 *T 98.5 45.4 2.94 3123 100.0 62000 11813 1.031 ! Near Maximum !
Elcho 17 98.5 45.4 2.94 3123 100.0 62000 11813 1.031 ! Near Maximum !
Alliant Reloder-22 *C 111.5 49.5 3.21 3120 97.0 62000 12795 1.033 ! Near Maximum !
Bofors RP5/NP ~approximation 111.5 49.5 3.21 3120 97.0 62000 12795 1.033 ! Near Maximum !
Raufoss RA15 *C 111.5 49.5 3.21 3120 97.0 62000 12795 1.033 ! Near Maximum !
Accurate MAGPRO 111.4 52.0 3.37 3118 93.1 62000 13086 1.034 ! Near Maximum !
Bofors RL16 TZ *C *T 103.5 44.3 2.87 3110 100.0 62000 11820 1.027 ! Near Maximum !
Alliant Reloder-16 *C *T 103.5 44.3 2.87 3110 100.0 62000 11820 1.027 ! Near Maximum !
Vihtavuori N555 *C*T 110.7 47.7 3.09 3106 100.0 62000 12021 1.055 ! Near Maximum !
IMR 7828 SSC 109.2 49.2 3.19 3105 95.2 62000 12678 1.025 ! Near Maximum !
Somchem S365 105.6 46.1 2.99 3094 100.0 62000 11285 1.043 ! Near Maximum !
ReloadSwiss RS 62 102.0 46.9 3.04 3088 99.7 62000 11904 1.049 ! Near Maximum !
ADI AR 2213 110.0 48.8 3.16 3087 95.0 62000 12518 1.025 ! Near Maximum !
PB Clermont PCL 518 104.0 47.2 3.06 3081 98.7 62000 12053 1.039 ! Near Maximum !
PB Clermont PCL 511 99.9 46.7 3.03 3080 99.0 62000 11999 1.039 ! Near Maximum !
Ramshot Magnum 110.4 52.8 3.42 3079 97.3 62000 12183 1.028 ! Near Maximum !
Ramshot Hunter 103.2 46.8 3.03 3078 99.0 62000 11981 1.040 ! Near Maximum !
Winchester 760 97.5 45.3 2.93 3072 98.4 62000 11968 1.043 ! Near Maximum !
Hodgdon H414 97.5 45.3 2.93 3072 98.4 62000 11968 1.043 ! Near Maximum !
Alliant Reloder-19 *C 107.7 47.3 3.07 3071 96.8 62000 12150 1.035 ! Near Maximum !
ADI AR 2209 106.9 46.7 3.03 3067 96.6 62000 12044 1.029 ! Near Maximum !
SNPE Vectan SP 12 112.0 52.5 3.40 3065 95.0 59362 12712 1.045 ! Near Maximum !
Bofors RP14 ~approximation 108.5 47.6 3.09 3064 96.8 62000 12054 1.036 ! Near Maximum !
Norma URP *C 102.8 44.6 2.89 3064 99.8 62000 11586 1.046 ! Near Maximum !
Bofors RP19 ~approximation 102.8 44.7 2.89 3063 99.8 62000 11582 1.046 ! Near Maximum !
Alliant Reloder-23 *C *T 112.0 48.1 3.12 3063 100.0 58256 11722 1.063 ! Near Maximum !
Bofors RP36 ZT *C *T 112.0 48.1 3.12 3063 100.0 58256 11722 1.063 ! Near Maximum !
Vihtavuori N550 *C*T 99.8 44.8 2.90 3062 99.7 62000 11709 1.051 ! Near Maximum !
Accurate 4350 102.1 44.8 2.90 3061 99.8 62000 11579 1.061 ! Near Maximum !
PB Clermont PCL 517 112.0 52.5 3.40 3058 94.8 59021 12704 1.048 ! Near Maximum !
Hodgdon LVR 100.1 44.0 2.85 3057 99.5 62000 11534 1.043 ! Near Maximum !
Rottweil R905 112.0 48.8 3.16 3057 94.6 60879 12234 1.044 ! Near Maximum !
IMR 4831 107.9 45.4 2.94 3045 99.8 62000 11348 1.054 ! Near Maximum !
Norma 204 *C 102.0 46.3 3.00 3044 96.5 62000 11801 1.036 ! Near Maximum !
Raufoss RA4 105.4 46.3 3.00 3044 96.5 62000 11801 1.036 ! Near Maximum !
Bofors RP4 ~approximation 105.4 46.3 3.00 3044 96.5 62000 11801 1.036 ! Near Maximum !
Winchester WXR 112.0 48.6 3.15 3039 95.8 57060 12533 1.073 ! Near Maximum !
Bofors RP15 112.0 48.6 3.15 3039 95.8 57060 12533 1.073 ! Near Maximum !
Somchem S385 108.0 47.9 3.11 3036 97.7 62000 11689 1.053 ! Near Maximum !
Accurate 3100 111.5 49.0 3.17 3031 98.9 62000 11483 1.063 ! Near Maximum !
Hodgdon H4831 SC *T 108.6 48.2 3.12 3031 94.4 62000 11770 1.034 ! Near Maximum !
Hodgdon Hybrid 100V 105.5 44.8 2.90 3029 100.0 62000 10700 1.044 ! Near Maximum !
Bofors RP4 NT *C ~approximation 102.9 45.9 2.97 3026 98.1 62000 11494 1.048 ! Near Maximum !
Vihtavuori N160 *C 99.7 44.7 2.89 3020 99.7 62000 10974 1.048 ! Near Maximum !
Winchester Supreme 780 105.9 49.0 3.18 3017 96.6 62000 11471 1.039 ! Near Maximum !
Hodgdon H380 94.7 42.5 2.75 3015 99.6 62000 11139 1.057 ! Near Maximum !
Norma 203 old 95.2 42.3 2.74 3014 100.0 62000 10777 1.066 ! Near Maximum !
Bofors RP3 95.2 42.3 2.74 3014 100.0 62000 10777 1.066 ! Near Maximum !
Lovex S070 102.1 44.3 2.87 3012 98.4 62000 11338 1.058 ! Near Maximum !
Shooters World SW4350 102.1 44.3 2.87 3012 98.4 62000 11338 1.058 ! Near Maximum !
Rottweil R903 97.3 42.3 2.74 3009 100.0 62000 10697 1.066 ! Near Maximum !
Rottweil R904 106.0 45.9 2.97 3007 95.4 62000 11422 1.040 ! Near Maximum !
ReloadSwiss RS 76 *C 112.0 52.9 3.43 3003 96.0 52047 13485 1.109
ADI AP 2214 112.0 51.1 3.31 3002 93.9 58409 12105 1.054 ! Near Maximum !
Hodgdon H4831 *T 112.0 47.8 3.10 3001 93.9 60099 11669 1.048 ! Near Maximum !
IMR 7828 112.0 47.8 3.10 2994 93.5 55388 12286 1.080 ! Near Maximum !
IMR 4955 Enduron *C*T 109.6 46.8 3.03 2994 94.7 62000 11409 1.041 ! Near Maximum !
Shooters World Long Rifle 100.8 43.3 2.81 2991 99.2 62000 10973 1.058 ! Near Maximum !
IMR 4007 SSC 96.3 42.9 2.78 2985 97.8 62000 11069 1.054 ! Near Maximum !
Shooters World Match Rifle 90.3 40.8 2.65 2982 100.0 62000 10127 1.069 ! Near Maximum !
Accurate 4064 94.9 40.8 2.64 2977 100.0 62000 10114 1.086 ! Near Maximum !
Vihtavuori N165 *C 112.0 48.6 3.15 2974 96.8 59045 11234 1.066 ! Near Maximum !
Alliant Reloder-25 *C 112.0 48.9 3.17 2971 98.1 51389 12396 1.118

 

[DrMike]

Cartridge : .257 Roberts +P+ (not SAAMI)
Bullet : .257, 115, Nosler BalTip 25115
Useable Case Capaci: 47.503 grain H2O = 3.084 cm³
Cartridge O.A.L. L6: 2.775 inch = 70.49 mm
Barrel Length : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 62000 psi, or 427 MPa
or a maximum loading ratio or filling of 112 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

8 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-26 *C 107.9 50.8 3.29 3135 100.0 62000 13180 1.049 ! Near Maximum !
Norma MRP *C 108.5 49.6 3.21 3098 98.7 62000 13119 1.050 ! Near Maximum !
ReloadSwiss RS 60 *T 98.5 45.2 2.93 3081 100.0 62000 11792 1.045 ! Near Maximum !
Vihtavuori N560 *C 110.1 49.3 3.19 3075 95.5 62000 13157 1.049 ! Near Maximum !
ReloadSwiss RS 70 *C 101.2 47.2 3.06 3071 99.8 62000 12337 1.045 ! Near Maximum !
Accurate MAGPRO 110.4 51.4 3.33 3062 93.8 62000 13129 1.054 ! Near Maximum !
Alliant Reloder-22 *C 110.5 48.9 3.17 3061 97.5 62000 12790 1.053 ! Near Maximum !
Bofors RP5/NP ~approximation 110.5 48.9 3.17 3061 97.5 62000 12790 1.053 ! Near Maximum !
Raufoss RA15 *C 110.5 48.9 3.17 3061 97.5 62000 12790 1.053 ! Near Maximum !
Elcho 17 97.5 44.8 2.90 3058 100.0 62000 11721 1.052 ! Near Maximum !
Alliant Reloder-17 *T 97.5 44.8 2.90 3058 100.0 62000 11721 1.052 ! Near Maximum !
IMR 7828 SSC 108.2 48.7 3.15 3050 95.8 62000 12704 1.044 ! Near Maximum !
SNPE Vectan SP 12 112.0 52.4 3.39 3048 96.2 61567 12858 1.047 ! Near Maximum !
Alliant Reloder-16 *C *T 102.5 43.7 2.83 3047 100.0 62000 11730 1.047 ! Near Maximum !
Bofors RL16 TZ *C *T 102.5 43.7 2.83 3047 100.0 62000 11730 1.047 ! Near Maximum !
PB Clermont PCL 517 112.0 52.4 3.39 3042 96.0 61211 12854 1.050 ! Near Maximum !
Vihtavuori N555 *C*T 109.5 47.0 3.05 3042 100.0 62000 11929 1.076 ! Near Maximum !
ADI AR 2213 109.0 48.3 3.13 3033 95.7 62000 12550 1.044 ! Near Maximum !
Alliant Reloder-23 *C *T 112.0 48.0 3.11 3033 100.0 60463 11676 1.067 ! Near Maximum !
Bofors RP36 ZT *C *T 112.0 48.0 3.11 3033 100.0 60463 11676 1.067 ! Near Maximum !
Somchem S365 104.4 45.5 2.95 3028 100.0 62000 11196 1.064 ! Near Maximum !
ReloadSwiss RS 62 101.0 46.3 3.00 3026 99.9 62000 11833 1.070 ! Near Maximum !
Ramshot Magnum 109.5 52.2 3.38 3026 97.9 62000 12197 1.047 ! Near Maximum !
PB Clermont PCL 518 103.0 46.6 3.02 3020 99.0 62000 12015 1.059 ! Near Maximum !
PB Clermont PCL 511 98.9 46.1 2.99 3019 99.3 62000 11955 1.060 ! Near Maximum !
Ramshot Hunter 102.2 46.2 2.99 3017 99.2 62000 11937 1.060 ! Near Maximum !
Rottweil R905 111.5 48.4 3.14 3017 95.4 62000 12310 1.056 ! Near Maximum !
Winchester WXR 112.0 48.5 3.14 3016 96.8 59147 12653 1.077 ! Near Maximum !
Bofors RP15 112.0 48.5 3.14 3016 96.8 59147 12653 1.077 ! Near Maximum !
Alliant Reloder-19 *C 106.7 46.7 3.03 3013 97.3 62000 12144 1.055 ! Near Maximum !
Hodgdon H414 96.5 44.7 2.90 3012 98.7 62000 11929 1.063 ! Near Maximum !
Winchester 760 96.5 44.7 2.90 3012 98.7 62000 11929 1.063 ! Near Maximum !
ADI AR 2209 105.9 46.1 2.99 3010 97.2 62000 12045 1.049 ! Near Maximum !
Bofors RP14 ~approximation 107.5 47.1 3.05 3006 97.3 62000 12050 1.056 ! Near Maximum !
Norma URP *C 101.7 44.1 2.86 3001 99.9 62000 11513 1.067 ! Near Maximum !
Bofors RP19 ~approximation 101.8 44.1 2.86 3001 99.9 62000 11509 1.067 ! Near Maximum !
Vihtavuori N550 *C*T 98.8 44.2 2.86 3000 99.8 62000 11640 1.071 ! Near Maximum !
Accurate 4350 101.0 44.2 2.87 2998 99.9 62000 11501 1.082 ! Near Maximum !
Hodgdon LVR 99.1 43.4 2.81 2995 99.7 62000 11470 1.063 ! Near Maximum !
ReloadSwiss RS 76 *C 112.0 52.8 3.42 2993 97.3 53962 13642 1.110 ! Near Maximum !
Norma 204 *C 101.1 45.7 2.96 2986 97.0 62000 11796 1.057 ! Near Maximum !
Raufoss RA4 104.4 45.7 2.96 2986 97.0 62000 11796 1.057 ! Near Maximum !
Bofors RP4 ~approximation 104.4 45.7 2.96 2986 97.0 62000 11796 1.057 ! Near Maximum !
ADI AP 2214 112.0 50.9 3.30 2984 95.2 60368 12261 1.057 ! Near Maximum !
IMR 4831 106.8 44.8 2.90 2983 99.9 62000 11274 1.075 ! Near Maximum !
Somchem S385 107.0 47.3 3.07 2978 98.2 62000 11670 1.074 ! Near Maximum !
Hodgdon H4831 *T 112.0 47.6 3.09 2976 95.0 62000 11799 1.054 ! Near Maximum !
Hodgdon H4831 SC *T 107.6 47.6 3.09 2976 95.0 62000 11799 1.054 ! Near Maximum !
IMR 7828 112.0 47.7 3.09 2974 94.7 57264 12442 1.083 ! Near Maximum !
Accurate 3100 110.4 48.3 3.13 2972 99.2 62000 11447 1.084 ! Near Maximum !
Bofors RP5 NT *C ~approximation 112.0 50.0 3.24 2970 92.8 60781 12130 1.060 ! Near Maximum !
Bofors RP4 NT *C ~approximation 101.9 45.3 2.94 2968 98.4 62000 11470 1.069 ! Near Maximum !
Hodgdon Hybrid 100V 104.5 44.3 2.87 2966 100.0 62000 10616 1.065 ! Near Maximum !
Winchester Supreme 780 104.9 48.4 3.14 2961 97.1 62000 11479 1.059 ! Near Maximum !
Vihtavuori N160 *C 98.7 44.1 2.86 2959 99.9 62000 10908 1.068 ! Near Maximum !
Hodgdon H380 93.8 41.9 2.72 2954 99.8 62000 11076 1.077 ! Near Maximum !
Lovex S070 101.1 43.8 2.84 2953 98.8 62000 11303 1.078 ! Near Maximum !
Shooters World SW4350 101.1 43.8 2.84 2953 98.8 62000 11303 1.078 ! Near Maximum !
Rottweil R904 105.1 45.4 2.94 2951 96.0 62000 11431 1.060 ! Near Maximum !
Alliant Reloder-25 *C 112.0 48.8 3.16 2951 98.9 53205 12465 1.121
Norma 203 old 94.2 41.7 2.70 2951 100.0 62000 10688 1.087 ! Near Maximum !
Vihtavuori N165 *C 112.0 48.5 3.14 2948 97.6 61184 11316 1.069 ! Near Maximum !
Vihtavuori N565 *C*T 112.0 50.4 3.26 2947 94.2 54782 12660 1.124 ! Near Maximum !
IMR 4955 Enduron *C*T 108.7 46.3 3.00 2939 95.3 62000 11431 1.061 ! Near Maximum !
Shooters World Long Rifle 99.8 42.8 2.77 2932 99.4 62000 10925 1.079 ! Near Maximum !
IMR 4007 SSC 95.5 42.4 2.75 2928 98.2 62000 11047 1.074 ! Near Maximum !
Accurate 4064 93.8 40.2 2.60 2912 100.0 62000 10026 1.107 ! Near Maximum !

You don't gain significant velocity by upping the pressure at this point.

 

[salmonchaser]

Wow, thanks Dr. Mike. With those velocities I’d certainly be up there with the AI. Hope to see the rifle next week, dies should be here Monday and I found some brass at my local gun shop. Reports to follow.

 

[Bruce Mc]

I think I need to do a little work with Reloder 17. It looks to get top velocity without being over 100% case capacity.

 

[cloverleaf]

Just dont buy your 120 Partitions from Midway.... I'd shoot spitballs before I"d pay what they are asking. CL

Sorry that comment probably belongs somewhere else. That should be a really nice rifle. Pics will be required.