Quickload 7mm08 with AR-Comp ; Speer 130 Hot Cor

garyw1911

Beginner
Mar 31, 2016
14
1
I have a Quickload request for a 7mm08 ; 22" BL ;Speer 130gr Hot Cor ( Flat Base) ; FC Brass (water capacity 53.0gr) ; Fed210 ; OAL = 2.857" (Jump = .015"). I did a firing test at 41.0gr AR-Comp , and got 2837f/s with ES = 6f/s . I was expecting 2887f/s like I got with 130gr Sie Pistol bullet (OAL=2.810"). I would like to see a QL prediction of velocity as the charge is stepped above 41.0gr , including 41.5gr. I would also like to see a powder ranking with no more than 5% compressed charges . There is no rush : we are in the middle of an ice storm ! There is no windchill in front of my computer . Thanks in advance.
 
couple of questions .

is this water capacity from unsized fully expanded brass filled to the top with water to a flat surface ?

if your chrony sets out in front of the muzzle by X amount of feet , did you adjust the velocity for this ?
 
The 53.0gr water capacity was FL sized . Fired case is 53.9gr . FC brass weighs 178gr , and is smaller capacity than may other brands.
Chrony is set at 12 ft from the muzzle. JBM Ballistics calculates the correction to muzzle at 10f/s higher than stated above . AR-Comp is sensitive to case volume before firing. That is why I moved to FL sizing for these loads .( I use neck sizing for other powders ) . I am not sure QL calculates this effect. I could seat the bullet deeper to decrease the case volume to be more like the Sie 130gr load at Jump .002" , but I will continue developing the Speer 130gr load at Jump .015" .
 
I'd say I'm in the ballpark . I got things to show 41.0 grains , is 2831 FPS .


Cartridge : 7 mm-08 Rem.
Bullet : .284, 130, Speer SP 1623
Useable Case Capaci: 51.987 grain H2O = 3.375 cm³
Cartridge O.A.L. L6: 2.857 inch = 72.57 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant AR-Comp *C *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 71 32.80 2364 1614 29049 7482 99.9 1.407
-18.0 73 33.62 2414 1682 30887 7600 100.0 1.375
-16.0 74 34.44 2463 1751 32836 7709 100.0 1.345
-14.0 76 35.26 2511 1820 34901 7816 100.0 1.315
-12.0 78 36.08 2558 1889 37100 7922 100.0 1.286
-10.0 80 36.90 2605 1959 39402 8026 100.0 1.250
-08.0 81 37.72 2651 2029 41814 8128 100.0 1.217
-06.0 83 38.54 2697 2099 44354 8229 100.0 1.185
-04.0 85 39.36 2742 2170 47032 8328 100.0 1.155
-02.0 87 40.18 2787 2242 49855 8424 100.0 1.125
+00.0 88 41.00 2831 2314 52831 8519 100.0 1.097 ! Near Maximum !
+02.0 90 41.82 2875 2386 55970 8612 100.0 1.070 ! Near Maximum !
+04.0 92 42.64 2918 2459 59280 8703 100.0 1.044 ! Near Maximum !
+06.0 94 43.46 2962 2532 62772 8792 100.0 1.019 !DANGEROUS LOAD-DO NOT USE!
+08.0 96 44.28 3005 2606 66457 8879 100.0 0.994 !DANGEROUS LOAD-DO NOT USE!
+10.0 97 45.10 3047 2681 70348 8963 100.0 0.971 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 88 41.00 2907 2439 63207 8256 100.0 1.025 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 88 41.00 2716 2129 42420 8907 100.0 1.196



the chart above skips 41.5 grains , it's included below .

Cartridge : 7 mm-08 Rem.
Bullet : .284, 130, Speer SP 1623
Useable Case Capaci: 51.987 grain H2O = 3.375 cm³
Cartridge O.A.L. L6: 2.857 inch = 72.57 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant AR-Comp *C *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 72 33.20 2389 1647 29932 7542 100.0 1.391
-18.0 73 34.03 2438 1716 31847 7655 100.0 1.360
-16.0 75 34.86 2487 1786 33881 7764 100.0 1.329
-14.0 77 35.69 2536 1856 36042 7872 100.0 1.300
-12.0 79 36.52 2583 1927 38322 7978 100.0 1.266
-10.0 81 37.35 2630 1997 40711 8082 100.0 1.232
-08.0 82 38.18 2677 2068 43222 8185 100.0 1.199
-06.0 84 39.01 2723 2140 45872 8286 100.0 1.168
-04.0 86 39.84 2768 2212 48666 8384 100.0 1.138
-02.0 88 40.67 2813 2285 51614 8481 100.0 1.108 ! Near Maximum !
+00.0 90 41.50 2858 2358 54725 8576 100.0 1.080 ! Near Maximum !
+02.0 91 42.33 2902 2431 58007 8669 100.0 1.054 ! Near Maximum !
+04.0 93 43.16 2946 2505 61472 8760 100.0 1.028 !DANGEROUS LOAD-DO NOT USE!
+06.0 95 43.99 2989 2580 65131 8848 100.0 1.003 !DANGEROUS LOAD-DO NOT USE!
+08.0 97 44.82 3033 2655 68995 8934 100.0 0.979 !DANGEROUS LOAD-DO NOT USE!
+10.0 98 45.65 3076 2731 73080 9018 100.0 0.956 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 90 41.50 2932 2482 65421 8314 100.0 1.010 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 90 41.50 2745 2175 43955 8960 100.0 1.177
 
powder chart that shows max pressure , or 105% case fill .


Cartridge : 7 mm-08 Rem.
Bullet : .284, 130, Speer SP 1623
Useable Case Capaci: 51.987 grain H2O = 3.375 cm³
Cartridge O.A.L. L6: 2.857 inch = 72.57 mm
Barrel Length : 22.0 inch = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 60191 psi, or 415 MPa
or a maximum loading ratio or filling of 105 %
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 !

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ReloadSwiss RS 60 *T 104.0 52.3 3.39 3119 100.0 60191 11390 1.000 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-17 *T 103.1 51.8 3.36 3099 99.9 60191 11309 1.005 !DANGEROUS LOAD-DO NOT USE!
Elcho 17 103.1 51.8 3.36 3099 99.9 60191 11309 1.005 !DANGEROUS LOAD-DO NOT USE!
PB Clermont PCL 511 104.5 53.4 3.46 3047 97.3 60191 11248 1.014 !DANGEROUS LOAD-DO NOT USE!
Winchester 760 102.0 51.7 3.35 3038 96.4 60191 11176 1.017 !DANGEROUS LOAD-DO NOT USE!
Hodgdon H414 102.0 51.7 3.35 3038 96.4 60191 11176 1.017 !DANGEROUS LOAD-DO NOT USE!
Vihtavuori N550 *C 104.4 51.1 3.31 3035 98.6 60191 11059 1.025 !DANGEROUS LOAD-DO NOT USE!
ReloadSwiss RS 70 *C 105.0 53.6 3.47 3034 97.6 57000 11530 1.028 ! Near Maximum !
Hodgdon LVR 104.7 50.2 3.25 3028 98.2 60191 10857 1.017 !DANGEROUS LOAD-DO NOT USE!
ReloadSwiss RS 62 105.0 52.7 3.42 2999 98.0 55795 11111 1.054 ! Near Maximum !
Bofors RP3 99.7 48.3 3.13 2995 99.9 60191 10296 1.041 !DANGEROUS LOAD-DO NOT USE!
Norma 203 old 99.7 48.3 3.13 2995 99.9 60191 10296 1.041 !DANGEROUS LOAD-DO NOT USE!
Rottweil R903 101.9 48.3 3.13 2988 99.8 60191 10209 1.041 !DANGEROUS LOAD-DO NOT USE!
Alliant Reloder-16 *C *T 105.0 49.0 3.18 2983 98.3 54567 10966 1.049 ! Near Maximum !
Bofors RL16 TZ *C *T 105.0 49.0 3.18 2983 98.3 54567 10966 1.049 ! Near Maximum !
Hodgdon H380 98.8 48.4 3.14 2983 98.4 60191 10475 1.034 !DANGEROUS LOAD-DO NOT USE!
Somchem S355 101.8 47.7 3.09 2979 99.7 60191 10180 1.037 !DANGEROUS LOAD-DO NOT USE!
Accurate 4350 105.0 50.3 3.26 2971 98.2 55848 10818 1.068 ! Near Maximum !
Shooters World Match Rifle 94.5 46.7 3.02 2968 100.0 60191 9669 1.044 !DANGEROUS LOAD-DO NOT USE!
Lovex D073.6 94.5 46.7 3.02 2968 100.0 60191 9669 1.044 !DANGEROUS LOAD-DO NOT USE!
Accurate 2520 92.4 46.7 3.02 2968 100.0 60191 9669 1.044 !DANGEROUS LOAD-DO NOT USE!
Accurate 4064 99.5 46.7 3.02 2968 100.0 60191 9668 1.062 !DANGEROUS LOAD-DO NOT USE!
Norma URP *C 105.0 49.8 3.23 2961 98.0 55242 10750 1.059 ! Near Maximum !
Bofors RP19 ~approximation 105.0 49.8 3.23 2960 98.0 55186 10744 1.060 ! Near Maximum !
Ramshot Hunter 105.0 52.0 3.37 2955 96.2 54559 10951 1.059 ! Near Maximum !
Norma 204 *C 105.0 52.0 3.37 2954 93.3 57448 10738 1.035 ! Near Maximum !
Shooters World Long Rifle 105.0 49.2 3.19 2953 97.6 60067 10260 1.038 !DANGEROUS LOAD-DO NOT USE!
Lovex S065 105.0 49.2 3.19 2953 97.6 60067 10260 1.038 !DANGEROUS LOAD-DO NOT USE!
SNPE Vectan SP 7 93.2 47.9 3.10 2953 98.3 60191 10098 1.038 !DANGEROUS LOAD-DO NOT USE!
Accurate 2495 93.7 43.9 2.85 2947 100.0 60191 9286 1.067 !DANGEROUS LOAD-DO NOT USE!
Bofors RP7 103.5 48.7 3.15 2942 95.6 60191 10260 1.034 !DANGEROUS LOAD-DO NOT USE!
Rottweil R907 103.5 48.7 3.15 2942 95.6 60191 10260 1.034 !DANGEROUS LOAD-DO NOT USE!
IMR 4007 SSC 100.2 48.7 3.16 2941 95.6 60191 10252 1.034 !DANGEROUS LOAD-DO NOT USE!
Lovex D073.5 88.5 45.5 2.95 2932 100.0 60191 9427 1.050 !DANGEROUS LOAD-DO NOT USE!
Accurate 2460 88.3 45.5 2.95 2932 100.0 60191 9427 1.050 !DANGEROUS LOAD-DO NOT USE!
Shooters World SW4350 105.0 49.8 3.23 2930 96.0 57380 10432 1.059 ! Near Maximum !
Lovex S070 105.0 49.8 3.23 2930 96.0 57380 10432 1.059 ! Near Maximum !
PB Clermont PCL 518 105.0 52.0 3.37 2930 95.4 53132 10907 1.072 ! Near Maximum !
Rottweil R901 93.4 42.5 2.75 2921 100.0 60191 9241 1.054 !DANGEROUS LOAD-DO NOT USE!
Bofors RP4 NT *C ~approximation 105.0 51.1 3.31 2913 95.0 55455 10460 1.063 ! Near Maximum !
Somchem S365 105.0 50.0 3.24 2910 99.6 49292 10594 1.106
Hodgdon Hybrid 100V 105.0 48.7 3.15 2855 98.8 50275 9909 1.101
Raufoss RA4 105.0 50.3 3.26 2849 91.5 51344 10354 1.090 ! Near Maximum !
Bofors RP4 ~approximation 105.0 50.3 3.26 2849 91.5 51344 10354 1.090 ! Near Maximum !
Alliant Reloder-26 *C 105.0 54.1 3.51 2827 94.1 43242 11619 1.169
ADI AR 2209 105.0 50.0 3.24 2819 90.6 49116 10368 1.107
Alliant Reloder-19 *C 105.0 50.3 3.26 2802 90.5 47623 10390 1.126
Rottweil R904 105.0 49.6 3.21 2798 89.8 50583 9901 1.102
IMR 4831 105.0 48.2 3.12 2795 96.5 46755 10123 1.152
Somchem S361 105.0 53.6 3.47 2795 89.2 52558 9745 1.095 ! Near Maximum !
Winchester Supreme 780 105.0 53.1 3.44 2793 90.8 49699 9990 1.107
Norma MRP *C 105.0 52.5 3.40 2787 90.5 43388 11077 1.170
Bofors RP14 ~approximation 105.0 50.3 3.26 2773 90.0 46535 10218 1.139
Somchem S385 105.0 50.9 3.30 2758 91.7 46097 10069 1.159
Vihtavuori N555 *C*T 105.0 49.3 3.20 2747 95.4 41033 10546 1.217
IMR 7828 SSC 105.0 51.7 3.35 2746 85.9 44818 10423 1.153
Hodgdon H4831 SC *T 105.0 50.9 3.30 2723 86.3 46149 9793 1.144
Vihtavuori N560 *C 105.0 51.4 3.33 2716 84.5 41939 10531 1.192
ADI AR 2213 105.0 50.9 3.30 2715 85.4 44056 10176 1.163
Bofors RP5/NP ~approximation 105.0 50.9 3.30 2705 87.6 41236 10408 1.203
Raufoss RA15 *C 105.0 50.9 3.30 2705 87.6 41236 10408 1.203
Alliant Reloder-22 *C 105.0 50.9 3.30 2705 87.6 41236 10408 1.203
IMR 4955 Enduron *C*T 105.0 49.0 3.17 2688 87.1 45669 9442 1.157
Alliant Reloder-23 *C *T 105.0 49.2 3.19 2673 95.4 38461 10203 1.240
 
part 2 of the powder chart .


Alliant Reloder-23 *C *T 105.0 49.2 3.19 2673 95.4 38461 10203 1.240
Bofors RP36 ZT *C *T 105.0 49.2 3.19 2673 95.4 38461 10203 1.240
Accurate MAGPRO 105.0 53.5 3.47 2670 81.4 40520 10304 1.216
Ramshot Magnum 105.0 54.8 3.55 2645 86.8 41024 9964 1.206
Rottweil R905 105.0 49.9 3.24 2632 83.9 39984 9725 1.223
Accurate 3100 105.0 50.3 3.26 2629 91.3 39306 9658 1.255
Bofors RP15 105.0 49.8 3.23 2619 85.5 37842 10003 1.254
Winchester WXR 105.0 49.8 3.23 2619 85.5 37842 10003 1.254
Hodgdon H4831 *T 105.0 48.9 3.17 2599 83.6 40415 9257 1.218
Vihtavuori N160 *C 105.0 48.2 3.13 2583 85.6 40741 8914 1.221
Vihtavuori N165 *C 105.0 49.8 3.23 2579 87.6 38963 9127 1.243
Bofors RP5 NT *C ~approximation 105.0 51.3 3.32 2577 80.0 39869 9274 1.227
IMR 7828 105.0 48.9 3.17 2564 81.5 37181 9559 1.261
SNPE Vectan SP 12 105.0 53.7 3.48 2562 81.2 37452 9816 1.259
PB Clermont PCL 517 105.0 53.7 3.48 2555 80.9 37257 9783 1.262
Alliant Reloder-25 *C 105.0 50.0 3.24 2538 87.3 34356 9914 1.303
ADI AP 2214 105.0 52.2 3.38 2534 80.4 38080 9294 1.252
Vihtavuori N565 *C 105.0 51.7 3.35 2514 80.4 33628 9682 1.328
ReloadSwiss RS 76 *C 105.0 54.1 3.51 2481 79.6 33484 10039 1.327
IMR 7977 Enduron *C*T 105.0 49.8 3.23 2463 73.9 39771 7961 1.245
Lovex S071 105.0 47.6 3.08 2456 87.6 32286 8968 1.361
Bofors RP30 105.0 50.3 3.26 2415 77.7 30439 9257 1.372
Norma MRP 2 *C 105.0 50.3 3.26 2415 77.7 30439 9257 1.372
ADI AR 2217 105.0 49.8 3.23 2371 75.8 32066 8436 1.347
Hodgdon H1000 *T 105.0 49.8 3.23 2371 75.8 32066 8436 1.347
Vihtavuori N570 *C 105.0 53.1 3.44 2344 66.8 29738 8875 1.401
ReloadSwiss RS 80 *C 105.0 54.6 3.54 2341 70.8 29363 9009 1.408
ADI AR 2225 105.0 50.6 3.28 2281 74.5 27683 8509 1.431
Hodgdon Retumbo 105.0 50.6 3.28 2281 74.5 27683 8509 1.431
Lovex D100 105.0 54.1 3.51 2275 64.9 31324 7474 1.384
Shooters World BMG 105.0 54.1 3.51 2275 64.9 31324 7474 1.384
Alliant Reloder-33 *C 105.0 54.6 3.54 2252 64.2 27682 8312 1.449
Vihtavuori N170 *C 105.0 49.8 3.23 2249 68.7 28058 7682 1.436
Vihtavuori 24N41 *C 105.0 53.6 3.47 2225 59.9 29543 7357 1.418
Accurate LRT 105.0 53.5 3.47 2196 57.1 28083 7318 1.448
ADI AR 2218 105.0 53.6 3.47 2177 56.5 27659 7276 1.457
IMR 8133 Enduron *C*T 105.0 49.2 3.19 2162 67.9 23948 7885 1.542
Norma 217 *C 105.0 49.6 3.21 2157 69.5 23416 8083 1.555
Hodgdon H870 105.0 52.0 3.37 2131 62.4 24045 7601 1.542
Hodgdon 50BMG 105.0 51.1 3.31 2060 52.4 24160 6552 1.545
Somchem 12.7-0 105.0 52.0 3.37 2057 53.3 25401 6178 1.523
Bofors 12,7mmRA NC1214 Lot20115087 105.0 53.2 3.45 2051 54.0 21778 7088 1.607
Hodgdon US 869 105.0 53.6 3.47 2045 54.8 23820 6544 1.560
Alliant Reloder-50 *C 105.0 54.4 3.53 2027 56.1 21221 7252 1.620
SNPE Vectan SP 13 105.0 51.4 3.33 1995 58.0 21483 6507 1.627
Accurate 8700 105.0 52.5 3.40 1949 53.7 21480 5986 1.632
PB Clermont PCL 513/520/9520 105.0 51.4 3.33 1938 54.6 20421 6121 1.663
Vihtavuori 20N29 *C 105.0 54.1 3.51 1906 50.9 20156 5960 1.672
NC A3502 ,test only 105.0 49.2 3.19 1840 38.0 20834 4495 1.663
TLP A 502(RH) ,test only 105.0 49.2 3.19 1811 40.2 19234 4661 1.716
V1734 7-multiperf ,test only 105.0 49.2 3.19 1323 18.9 11501 2197 2.258
 
Thanks Jimbires. The split chart for AR-Comp gives more choices for velocity and pressure , while burning 100% . I like this powder in every caliber I've tried it. I do respect that this powder can build pressure quickly , and will continue to work up slowly . The powder chart shows other interesting powders for this bullet : SW Match Rifle ; A2520 ; A4064 ; A2495 , all of which Burn 100% . I have tried A2495 at 42.9gr with this bullet. Velocity depends on temp. just like IMR4895 . AR-Comp is more temp. stable than the powders I have listed.
 
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