QL 7,5X55 swiss?
- Thread starter Polaris
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,545
- 6,627
Polaris,
I'm at work, but if no one has run this when I get home late this evening, I'll generate some figures for you. Do you have a preferred powder? Length of barrel?
I'm at work, but if no one has run this when I get home late this evening, I'll generate some figures for you. Do you have a preferred powder? Length of barrel?
DrMike
Ballistician
- Nov 8, 2006
- 37,545
- 6,627
Cartridge : 7.5 x 55 GP11 SWISS
Bullet : .308, 155, Nosler CC HPBT J4 53155
Useable Case Capaci: 60.494 grain H2O = 3.928 cm³
Cartridge O.A.L. L6: 3.059 inch = 77.70 mm
Barrel Length : 22.0 inch = 558.8 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 54000 psi, or 372 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 !
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
--------------------------------- -----------------------------------------------------------------
Somchem S365 105.0 58.2 3.77 2903 99.9 51948 10638 1.100 ! Near Maximum !
Ramshot Hunter 103.2 59.4 3.85 2896 96.7 54000 10965 1.083 ! Near Maximum !
Norma URP 102.8 56.7 3.67 2888 98.3 54000 10705 1.090 ! Near Maximum !
Bofors RP19 ~approximation 102.8 56.7 3.67 2888 98.3 54000 10702 1.090 ! Near Maximum !
Hodgdon H414 97.4 57.5 3.72 2887 95.7 54000 10896 1.087 ! Near Maximum !
Winchester 760 97.4 57.5 3.72 2887 95.7 54000 10896 1.087 ! Near Maximum !
Vihtavuori N550 99.7 56.8 3.68 2884 98.1 54000 10792 1.096 ! Near Maximum !
Norma 204 101.9 58.7 3.80 2852 93.1 54000 10617 1.082 ! Near Maximum !
Norma 203 old 95.0 53.6 3.47 2847 99.7 54000 10084 1.113 ! Near Maximum !
Bofors RP4 ~approximation 105.0 58.6 3.79 2846 93.1 53703 10597 1.085 ! Near Maximum !
Raufoss RA4 105.0 58.6 3.79 2846 93.1 53703 10597 1.085 ! Near Maximum !
Hodgdon Hybrid 100V 105.0 56.6 3.67 2846 99.4 52807 10000 1.096 ! Near Maximum !
Bofors RP4 NT ~approximation 102.8 58.2 3.77 2841 95.3 54000 10439 1.094 ! Near Maximum !
Rottweil R903 97.2 53.6 3.47 2841 99.6 54000 10000 1.113 ! Near Maximum !
Hodgdon H380 94.2 53.7 3.48 2834 97.9 54000 10214 1.105 ! Near Maximum !
Somchem S355 96.9 52.9 3.42 2831 99.5 54000 9946 1.109 ! Near Maximum !
Lovex S070 101.7 56.1 3.63 2826 95.9 54000 10297 1.107 ! Near Maximum !
Accurate 4350 105.0 56.0 3.63 2825 97.7 50234 10586 1.142 ! Near Maximum !
Accurate 4064 99.1 51.6 3.35 2823 100.0 54000 9474 1.136 ! Near Maximum !
ADI AR 2209 105.0 58.2 3.77 2818 92.2 51294 10630 1.103 ! Near Maximum !
Lovex S065 100.2 54.6 3.54 2808 97.1 54000 10000 1.109 ! Near Maximum !
Accurate 2495 92.1 48.6 3.15 2803 100.0 54000 9085 1.142 ! Near Maximum !
Alliant Reloder-19 105.0 58.6 3.79 2801 92.2 49798 10650 1.122 ! Near Maximum !
Rottweil R907 98.8 54.1 3.50 2795 94.9 54000 9983 1.105 ! Near Maximum !
IMR 4007 SSC 95.7 54.1 3.51 2795 94.9 54000 9975 1.105 ! Near Maximum !
Norma MRP 105.0 61.1 3.96 2795 92.5 45586 11378 1.162
Rottweil R904 105.0 57.7 3.74 2794 91.4 52859 10147 1.098 ! Near Maximum !
Winchester Supreme 780 105.0 61.7 4.00 2794 92.5 52117 10238 1.102 ! Near Maximum !
IMR 4831 105.0 56.1 3.63 2790 97.6 49189 10284 1.146 ! Near Maximum !
Somchem S361 104.5 62.0 4.02 2776 90.5 54000 9930 1.100 ! Near Maximum !
Bofors RP14 ~approximation 105.0 58.6 3.79 2772 91.7 48640 10479 1.135 ! Near Maximum !
Somchem S385 105.0 59.2 3.84 2758 93.3 48553 10303 1.153 ! Near Maximum !
IMR 7828 SSC 105.0 60.1 3.90 2754 88.0 46895 10756 1.147 ! Near Maximum !
Hodgdon H4831 SC 105.0 59.2 3.84 2725 88.2 48228 10079 1.140 ! Near Maximum !
Vihtavuori N560 105.0 59.8 3.88 2723 86.7 43943 10875 1.185
Bullet : .308, 155, Nosler CC HPBT J4 53155
Useable Case Capaci: 60.494 grain H2O = 3.928 cm³
Cartridge O.A.L. L6: 3.059 inch = 77.70 mm
Barrel Length : 22.0 inch = 558.8 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 54000 psi, or 372 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 !
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
--------------------------------- -----------------------------------------------------------------
Somchem S365 105.0 58.2 3.77 2903 99.9 51948 10638 1.100 ! Near Maximum !
Ramshot Hunter 103.2 59.4 3.85 2896 96.7 54000 10965 1.083 ! Near Maximum !
Norma URP 102.8 56.7 3.67 2888 98.3 54000 10705 1.090 ! Near Maximum !
Bofors RP19 ~approximation 102.8 56.7 3.67 2888 98.3 54000 10702 1.090 ! Near Maximum !
Hodgdon H414 97.4 57.5 3.72 2887 95.7 54000 10896 1.087 ! Near Maximum !
Winchester 760 97.4 57.5 3.72 2887 95.7 54000 10896 1.087 ! Near Maximum !
Vihtavuori N550 99.7 56.8 3.68 2884 98.1 54000 10792 1.096 ! Near Maximum !
Norma 204 101.9 58.7 3.80 2852 93.1 54000 10617 1.082 ! Near Maximum !
Norma 203 old 95.0 53.6 3.47 2847 99.7 54000 10084 1.113 ! Near Maximum !
Bofors RP4 ~approximation 105.0 58.6 3.79 2846 93.1 53703 10597 1.085 ! Near Maximum !
Raufoss RA4 105.0 58.6 3.79 2846 93.1 53703 10597 1.085 ! Near Maximum !
Hodgdon Hybrid 100V 105.0 56.6 3.67 2846 99.4 52807 10000 1.096 ! Near Maximum !
Bofors RP4 NT ~approximation 102.8 58.2 3.77 2841 95.3 54000 10439 1.094 ! Near Maximum !
Rottweil R903 97.2 53.6 3.47 2841 99.6 54000 10000 1.113 ! Near Maximum !
Hodgdon H380 94.2 53.7 3.48 2834 97.9 54000 10214 1.105 ! Near Maximum !
Somchem S355 96.9 52.9 3.42 2831 99.5 54000 9946 1.109 ! Near Maximum !
Lovex S070 101.7 56.1 3.63 2826 95.9 54000 10297 1.107 ! Near Maximum !
Accurate 4350 105.0 56.0 3.63 2825 97.7 50234 10586 1.142 ! Near Maximum !
Accurate 4064 99.1 51.6 3.35 2823 100.0 54000 9474 1.136 ! Near Maximum !
ADI AR 2209 105.0 58.2 3.77 2818 92.2 51294 10630 1.103 ! Near Maximum !
Lovex S065 100.2 54.6 3.54 2808 97.1 54000 10000 1.109 ! Near Maximum !
Accurate 2495 92.1 48.6 3.15 2803 100.0 54000 9085 1.142 ! Near Maximum !
Alliant Reloder-19 105.0 58.6 3.79 2801 92.2 49798 10650 1.122 ! Near Maximum !
Rottweil R907 98.8 54.1 3.50 2795 94.9 54000 9983 1.105 ! Near Maximum !
IMR 4007 SSC 95.7 54.1 3.51 2795 94.9 54000 9975 1.105 ! Near Maximum !
Norma MRP 105.0 61.1 3.96 2795 92.5 45586 11378 1.162
Rottweil R904 105.0 57.7 3.74 2794 91.4 52859 10147 1.098 ! Near Maximum !
Winchester Supreme 780 105.0 61.7 4.00 2794 92.5 52117 10238 1.102 ! Near Maximum !
IMR 4831 105.0 56.1 3.63 2790 97.6 49189 10284 1.146 ! Near Maximum !
Somchem S361 104.5 62.0 4.02 2776 90.5 54000 9930 1.100 ! Near Maximum !
Bofors RP14 ~approximation 105.0 58.6 3.79 2772 91.7 48640 10479 1.135 ! Near Maximum !
Somchem S385 105.0 59.2 3.84 2758 93.3 48553 10303 1.153 ! Near Maximum !
IMR 7828 SSC 105.0 60.1 3.90 2754 88.0 46895 10756 1.147 ! Near Maximum !
Hodgdon H4831 SC 105.0 59.2 3.84 2725 88.2 48228 10079 1.140 ! Near Maximum !
Vihtavuori N560 105.0 59.8 3.88 2723 86.7 43943 10875 1.185
- Thread starter
- #4
Hey, thanks for the run. Was hoping Varget and 4320 would show up in there but I can glean some interesting info from this regardless.
Hate to be a pest, but can you set pressure to 50K, COAL to 2.990 and min. load density to 80%? The K-31 has some pretty hefty recoil from prone so I like to keep my loads on the mild side. I'd have to look it up but the barrel length is about right. Thanks again.
605.2 mm this is the metric barrel length according to WIKI
Hate to be a pest, but can you set pressure to 50K, COAL to 2.990 and min. load density to 80%? The K-31 has some pretty hefty recoil from prone so I like to keep my loads on the mild side. I'd have to look it up but the barrel length is about right. Thanks again.
605.2 mm this is the metric barrel length according to WIKI
- Thread starter
- #5
All the suggested accuracy loads in the Sierra Edition V are super accurate In the 7.5X55 Swiss.
I use the powder load listed but used different primers and bullet.
Here is what I use. Graf/Prvi case, 45.0 grs IMR 4064, Federal 210M primer, 155 Nosler custom competition HPBT, OAL 2.880 and I use a Lee Factory Crimp Die, 2700 fps. This is a tack driver and match winner.
I use the powder load listed but used different primers and bullet.
Here is what I use. Graf/Prvi case, 45.0 grs IMR 4064, Federal 210M primer, 155 Nosler custom competition HPBT, OAL 2.880 and I use a Lee Factory Crimp Die, 2700 fps. This is a tack driver and match winner.
- Thread starter
- #7
1Shot":1idllyw9 said:
Awfully close to my old match load. I was shooting 43.1 gr IMR 4320 loaded to 2.990 (almost touching the lands). Settled on that charge as that velocity regulates to my sights at 200 yards and groups amazingly well. I'm swithcing my "fast" powder to either IMR 4064, Varget or something else versatile and suitable for the Garand as I'm tired of getting gouged buying 1 lb cans of powder and would rather just keep 3 8lb kegs around the shop. The QL runoff is giving me a good idea of where those different powder options will come in and what weight range should get my target velocity. Thanks for the load though, that one is on my experiment list. Probably going to go off-book and work up something for Varget too. I've got enough data for the same powder and bullet weights between .308win and X54r and 7,5X55 to interpolate a starting load. The burn rate of Varget should be near ideal for the swiss with 155gr bullets.
Polaris":2883txc5 said:
Cartridge : 7.5 x 55 GP11 SWISS
Bullet : .308, 155, Nosler CC HPBT J4 53155
Useable Case Capaci: 60.494 grain H2O = 3.928 cm³
Cartridge O.A.L. L6: 3.059 inch = 77.70 mm
Barrel Length : 22.0 inch = 558.8 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 50000 psi, or 344 MPa
or a maximum loading ratio or filling of 110 %
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 !
146 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
--------------------------------- -----------------------------------------------------------------
Norma MRP 107.7 62.7 4.06 2884 94.1 50000 11727 1.113 ! Near Maximum !
Somchem S365 103.9 57.6 3.73 2870 99.8 50000 10585 1.119 ! Near Maximum !
Bofors RP5/NP ~approximation 109.5 61.7 4.00 2849 92.3 50000 11297 1.117 ! Near Maximum !
Raufoss RA15 109.5 61.7 4.00 2849 92.3 50000 11297 1.117 ! Near Maximum !
Alliant Reloder-22 109.5 61.7 4.00 2849 92.3 50000 11297 1.117 ! Near Maximum !
Vihtavuori N560 109.0 62.1 4.02 2849 89.3 50000 11443 1.115 ! Near Maximum !
Accurate MAGPRO 109.7 65.0 4.21 2836 87.1 50000 11369 1.119 ! Near Maximum !
Alliant Reloder-17 92.3 54.0 3.50 2825 98.4 50000 10391 1.113 ! Near Maximum !
Ramshot Hunter 100.9 58.1 3.76 2825 95.7 50000 10723 1.122 ! Near Maximum !
Accurate 4350 104.9 55.9 3.62 2821 97.6 50000 10574 1.144 ! Near Maximum !
Norma URP 100.4 55.4 3.59 2820 97.5 50000 10499 1.128 ! Near Maximum !
Bofors RP19 ~approximation 100.4 55.4 3.59 2820 97.5 50000 10496 1.128 ! Near Maximum !
Hodgdon H414 95.2 56.1 3.64 2817 94.7 50000 10643 1.126 ! Near Maximum !
Winchester 760 95.2 56.1 3.64 2817 94.7 50000 10643 1.126 ! Near Maximum !
IMR 7828 SSC 106.9 61.2 3.97 2815 89.3 50000 11019 1.113 ! Near Maximum !
Vihtavuori N550 97.3 55.4 3.59 2814 97.4 50000 10568 1.135 ! Near Maximum !
Ramshot BigGame 93.2 53.7 3.48 2806 98.6 50000 10196 1.128 ! Near Maximum !
IMR 4831 105.5 56.4 3.65 2805 97.7 50000 10327 1.137 ! Near Maximum !
Alliant Reloder-19 105.1 58.6 3.80 2805 92.3 50000 10666 1.120 ! Near Maximum !
SNPE Vectan SP 11 93.4 53.8 3.48 2805 98.6 50000 10183 1.128 ! Near Maximum !
Hodgdon Hybrid 100V 103.3 55.7 3.61 2800 99.1 50000 9897 1.123 ! Near Maximum !
ADI AR 2213 107.5 60.6 3.93 2800 89.2 50000 10849 1.114 ! Near Maximum !
Bofors RP14 ~approximation 105.9 59.0 3.83 2798 92.2 50000 10583 1.120 ! Near Maximum !
ADI AR 2209 104.2 57.8 3.75 2794 91.8 50000 10536 1.116 ! Near Maximum !
Rottweil R905 110.0 60.9 3.94 2790 89.2 49310 10688 1.127 ! Near Maximum !
Somchem S385 105.9 59.7 3.87 2784 93.8 50000 10397 1.137 ! Near Maximum !
Norma 203 old 92.7 52.3 3.39 2781 99.3 50000 9926 1.153 ! Near Maximum !
Norma 204 99.6 57.3 3.72 2780 91.9 50000 10345 1.121 ! Near Maximum !
Bofors RP4 ~approximation 102.8 57.3 3.72 2780 91.9 50000 10345 1.121 ! Near Maximum !
Raufoss RA4 102.8 57.3 3.72 2780 91.9 50000 10345 1.121 ! Near Maximum !
Norma 203B 90.8 50.6 3.28 2779 98.7 50000 9945 1.142 ! Near Maximum !
Alliant Reloder-15 90.3 50.4 3.26 2778 98.3 50000 9972 1.142 ! Near Maximum !
Bofors RP11 ~approximation 90.3 50.4 3.26 2778 98.3 50000 9972 1.142 ! Near Maximum !
Raufoss RA11 90.3 50.4 3.26 2778 98.3 50000 9972 1.142 ! Near Maximum !
Winchester WXR 110.0 60.7 3.93 2775 90.7 46353 10991 1.158
Rottweil R903 94.8 52.3 3.39 2774 99.2 50000 9841 1.153 ! Near Maximum !
Bofors RP4 NT ~approximation 100.5 56.9 3.69 2772 94.3 50000 10199 1.134 ! Near Maximum !
IMR 4320 92.3 50.6 3.28 2768 98.6 50000 9650 1.123 ! Near Maximum !
Ramshot Magnum 110.0 65.7 4.26 2766 88.3 47774 11051 1.138 ! Near Maximum !
Hodgdon H380 91.9 52.4 3.39 2765 97.1 50000 9992 1.146 ! Near Maximum !
Somchem S355 94.4 51.5 3.34 2764 99.0 50000 9765 1.149 ! Near Maximum !
Accurate 4064 96.5 50.3 3.26 2759 100.0 50000 9360 1.177 ! Near Maximum !
Hodgdon H4831 SC 106.1 59.8 3.88 2758 88.9 50000 10215 1.121 ! Near Maximum !
Winchester Supreme 780 103.9 61.1 3.96 2757 91.8 50000 10107 1.123 ! Near Maximum !
SNPE Vectan SP 12 110.0 65.5 4.24 2757 88.3 47305 11004 1.143 ! Near Maximum !
Lovex S070 99.2 54.7 3.55 2755 94.9 50000 10050 1.148 ! Near Maximum !
PB Clermont PCL 517 110.0 65.5 4.24 2750 87.9 47048 10980 1.146 ! Near Maximum !
Hodgdon H4350 101.7 55.5 3.60 2749 93.7 50000 9890 1.129 ! Near Maximum !
IMR 4350 99.8 55.4 3.59 2749 93.9 50000 9882 1.130 ! Near Maximum !
Hodgdon H4831 110.0 59.6 3.86 2747 88.7 49435 10173 1.127 ! Near Maximum !
Bofors RP7 NT ~approximation 93.4 52.5 3.40 2745 95.0 50000 9678 1.119 ! Near Maximum !
Rottweil R904 103.3 56.8 3.68 2744 90.5 50000 9949 1.127 ! Near Maximum !
Lovex S062 91.2 49.5 3.21 2743 99.5 50000 9406 1.152 ! Near Maximum !
Hodgdon VARGET 92.6 49.9 3.24 2740 98.1 50000 9529 1.132 ! Near Maximum !
ADI AR 2208 92.3 49.9 3.24 2740 98.1 50000 9529 1.132 ! Near Maximum !
Lovex S065 97.7 53.3 3.45 2739 96.2 50000 9770 1.149 ! Near Maximum !
IMR 4064 93.2 49.1 3.18 2735 98.3 50000 9405 1.137 ! Near Maximum !
Vihtavuori N150 99.6 52.4 3.39 2735 99.7 50000 9249 1.144 ! Near Maximum !
Bofors RP3 NT ~approximation 95.1 52.7 3.42 2732 96.1 50000 9548 1.130 ! Near Maximum !
Bofors RP5 NT ~approximation 110.0 62.5 4.05 2729 85.5 48719 10299 1.134 ! Near Maximum !
Rottweil R907 96.3 52.7 3.42 2725 93.9 50000 9727 1.145 ! Near Maximum !
Vihtavuori N165 110.0 60.7 3.93 2725 92.3 47922 9936 1.148 ! Near Maximum !
IMR 4007 SSC 93.3 52.8 3.42 2725 93.9 50000 9720 1.145 ! Near Maximum !
IMR 7828 110.0 59.6 3.86 2723 87.4 45441 10622 1.164
Vihtavuori N160 110.0 58.8 3.81 2718 90.1 49499 9727 1.134 ! Near Maximum !
Vihtavuori N135 95.7 48.4 3.13 2718 100.0 50000 8526 1.152 ! Near Maximum !
ADI AP 2214 110.0 63.7 4.13 2712 87.2 47431 10424 1.145 ! Near Maximum !
Somchem S361 102.2 60.7 3.93 2707 89.2 50000 9672 1.139 ! Near Maximum !
Alliant Reloder-25 110.0 61.0 3.95 2700 93.1 41951 10949 1.208
Accurate 2700 94.3 54.3 3.52 2678 93.5 50000 9157 1.149 ! Near Maximum !
Lovex S071 110.0 58.0 3.76 2605 92.6 40326 9787 1.264
Accurate 3100 110.0 58.0 3.76 2605 92.6 40326 9787 1.264
Norma MRP 2 110.0 61.3 3.97 2580 84.3 37315 10429 1.283
Hodgdon H1000 110.0 60.7 3.93 2532 82.7 39300 9582 1.252
Vihtavuori N570 110.0 64.7 4.19 2522 74.3 36682 10288 1.295
Alliant Reloder 33 110.0 67.4 4.37 2510 75.0 36883 10213 1.295
Hodgdon Retumbo 110.0 61.7 4.00 2443 82.6 33644 9885 1.343
Lovex D100 110.0 66.0 4.28 2436 71.1 39018 8510 1.273
Vihtavuori N170 110.0 60.7 3.93 2395 74.5 34321 8675 1.349
Vihtavuori 24N41 110.0 65.3 4.23 2384 66.4 36476 8512 1.311
ADI AR 2218 110.0 65.3 4.23 2344 64.7 34180 8784 1.345
Hodgdon H870 110.0 63.3 4.10 2291 70.1 29321 8952 1.427
Bofors 12,7mmRA NC1214 Lot20115087 110.0 64.9 4.20 2210 60.2 26928 8240 1.491
Hodgdon 50BMG 110.0 62.3 4.04 2202 58.1 29408 7611 1.434
Alliant Reloder-50 110.0 66.3 4.30 2198 64.1 26154 8689 1.498
Hodgdon US 869 110.0 65.3 4.23 2191 61.1 29110 7644 1.444
SNPE Vectan SP 13 110.0 62.7 4.06 2137 64.7 26064 7609 1.506
PB Clermont PCL 513/520/9520 110.0 62.7 4.06 2074 61.1 24706 7196 1.542
Vihtavuori 20N29 110.0 66.0 4.28 2052 57.8 24663 7129 1.547
Accurate 8700 110.0 62.8 4.07 2035 59.1 24546 6839 1.551
NC A3502 ,test only 110.0 60.0 3.89 1946 41.7 24818 5199 1.559
TLP A 502(RH) ,test only 110.0 60.0 3.89 1919 44.7 22894 5461 1.606
IMR TrailBoss 110.0 20.7 1.34 1799 100.0 39323 2966 1.404
ADI AS 25 BP 110.0 20.7 1.34 1799 100.0 39323 2966 1.404
V1734 7-multiperf ,test only 110.0 60.0 3.89 1388 20.5 13365 2523 2.097
Cartridge : 7.5 x 55 GP11 SWISS
Bullet : .308, 155, Nosler CC HPBT J4 53155
Useable Case Capaci: 60.494 grain H2O = 3.928 cm³
Cartridge O.A.L. L6: 3.059 inch = 77.70 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : IMR 4064
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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
-10.0 86 45.16 2534 2210 39905 8702 95.9 1.264
-09.0 87 45.66 2560 2255 41076 8800 96.3 1.247
-08.0 88 46.17 2586 2301 42279 8895 96.6 1.230
-07.0 89 46.67 2611 2347 43515 8989 97.0 1.213
-06.0 90 47.17 2637 2393 44786 9079 97.3 1.197
-05.0 90 47.67 2663 2440 46092 9168 97.6 1.181
-04.0 91 48.17 2688 2487 47434 9253 97.9 1.165 ! Near Maximum !
-03.0 92 48.67 2714 2535 48814 9337 98.1 1.150 ! Near Maximum !
-02.0 93 49.18 2739 2582 50233 9417 98.4 1.135 ! Near Maximum !
-01.0 94 49.68 2765 2631 51692 9495 98.6 1.120 ! Near Maximum !
+00.0 95 50.18 2790 2679 53192 9570 98.8 1.105 ! Near Maximum !
+01.0 96 50.68 2815 2728 54734 9642 99.0 1.091 !DANGEROUS LOAD-DO NOT USE!
+02.0 97 51.18 2840 2777 56320 9711 99.2 1.077 !DANGEROUS LOAD-DO NOT USE!
+03.0 98 51.69 2865 2826 57952 9777 99.4 1.063 !DANGEROUS LOAD-DO NOT USE!
+04.0 99 52.19 2890 2875 59630 9840 99.5 1.049 !DANGEROUS LOAD-DO NOT USE!
+05.0 100 52.69 2915 2925 61357 9900 99.6 1.036 !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 95 50.18 2902 2898 62186 9342 100.0 1.032 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 95 50.18 2637 2394 44351 9370 93.9 1.200
Cartridge : 7.5 x 55 GP11 SWISS
Bullet : .308, 155, Nosler CC HPBT J4 53155
Useable Case Capaci: 60.494 grain H2O = 3.928 cm³
Cartridge O.A.L. L6: 3.059 inch = 77.70 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon VARGET
Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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
-10.0 84 45.16 2499 2149 38206 8631 95.0 1.284
-09.0 85 45.66 2524 2193 39306 8734 95.4 1.267
-08.0 86 46.17 2550 2237 40436 8835 95.7 1.250
-07.0 87 46.67 2575 2282 41597 8935 96.1 1.233
-06.0 87 47.17 2600 2327 42790 9032 96.5 1.217
-05.0 88 47.67 2626 2373 44015 9127 96.8 1.201
-04.0 89 48.17 2651 2419 45274 9220 97.1 1.185
-03.0 90 48.67 2676 2465 46568 9311 97.4 1.170
-02.0 91 49.18 2702 2512 47898 9399 97.7 1.155 ! Near Maximum !
-01.0 92 49.68 2727 2559 49265 9485 98.0 1.140 ! Near Maximum !
+00.0 93 50.18 2752 2606 50669 9569 98.2 1.125 ! Near Maximum !
+01.0 94 50.68 2777 2654 52113 9650 98.5 1.111 ! Near Maximum !
+02.0 95 51.18 2802 2702 53597 9728 98.7 1.097 ! Near Maximum !
+03.0 96 51.69 2827 2751 55123 9803 98.9 1.083 !DANGEROUS LOAD-DO NOT USE!
+04.0 97 52.19 2852 2799 56692 9876 99.1 1.069 !DANGEROUS LOAD-DO NOT USE!
+05.0 98 52.69 2877 2848 58305 9946 99.3 1.055 !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 93 50.18 2867 2829 59086 9441 100.0 1.052 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 50.18 2599 2325 42420 9276 92.8 1.220
- Thread starter
- #9
Interesting that the slower powders are showing a lot of promise. I have some H414, H380 and IMR 4350 on hand. May have to give those a test as well.
Thanks again for the run. Gives me plenty of info to come up with a safe starting point for Varget. The 4064 predicted figures seem to closely mirror actual data/velocities. Hopefully Santa is bringing a chronograph so I should be able to post some results, I know there is a demand for loads for Varget in this caliber. Looking forward to a winter full of reloading and some spring testing. Finally used up my stash of the old 4320 so it's time to start over with something more versatile.
Thanks again for the run. Gives me plenty of info to come up with a safe starting point for Varget. The 4064 predicted figures seem to closely mirror actual data/velocities. Hopefully Santa is bringing a chronograph so I should be able to post some results, I know there is a demand for loads for Varget in this caliber. Looking forward to a winter full of reloading and some spring testing. Finally used up my stash of the old 4320 so it's time to start over with something more versatile.
