wildman
Beginner
- Jun 13, 2009
- 177
- 6
Need some data for contender in 7 tcu 10 inch barrel working with h322, imr 4895, varget .120 and 140 BT.
7mm tcu quick load
- Thread starter wildman
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,216
- 5,708
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 120, Nosler BalTip 28120
Useable Case Capaci: 30.031 grain H2O = 1.950 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Powder : Hodgdon H322
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 96 25.92 1942 1005 38781 13246 84.8 0.752
-09.0 98 26.21 1966 1030 40062 13473 85.5 0.740
-08.0 99 26.50 1991 1056 41390 13697 86.2 0.728
-07.0 100 26.78 2016 1083 42766 13920 86.8 0.716
-06.0 101 27.07 2041 1110 44191 14141 87.5 0.704
-05.0 102 27.36 2066 1138 45669 14360 88.2 0.693
-04.0 103 27.65 2092 1166 47200 14576 88.8 0.682 ! Near Maximum !
-03.0 104 27.94 2117 1194 48786 14791 89.4 0.671 ! Near Maximum !
-02.0 105 28.22 2143 1224 50436 15002 90.0 0.660 ! Near Maximum !
-01.0 106 28.51 2169 1253 52147 15210 90.6 0.649 ! Near Maximum !
+00.0 107 28.80 2195 1283 53922 15415 91.2 0.639 ! Near Maximum !
+01.0 108 29.09 2221 1314 55765 15617 91.8 0.629 !DANGEROUS LOAD-DO NOT USE!
+02.0 109 29.38 2247 1345 57682 15814 92.4 0.618 !DANGEROUS LOAD-DO NOT USE!
+03.0 110 29.66 2273 1377 59673 16008 92.9 0.609 !DANGEROUS LOAD-DO NOT USE!
+04.0 111 29.95 2299 1409 61744 16198 93.4 0.599 !DANGEROUS LOAD-DO NOT USE!
+05.0 113 30.24 2326 1441 63898 16383 93.9 0.589 !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 107 28.80 2332 1449 64935 16048 97.3 0.588 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 107 28.80 2029 1096 44177 14082 81.8 0.702I believe you're going to have some difficulty stuffing this much Varget or IMR4895 in the case:
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 120, Nosler BalTip 28120
Useable Case Capaci: 30.031 grain H2O = 1.950 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 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
-10.0 105 28.08 1881 943 38126 12291 74.1 0.759
-09.0 106 28.39 1906 968 39444 12527 74.9 0.747
-08.0 107 28.70 1932 994 40813 12763 75.6 0.734
-07.0 108 29.02 1957 1020 42236 12999 76.4 0.721
-06.0 110 29.33 1983 1047 43717 13235 77.1 0.709
-05.0 111 29.64 2009 1075 45255 13471 77.9 0.697
-04.0 112 29.95 2035 1103 46860 13707 78.6 0.685 ! Near Maximum !
-03.0 113 30.26 2061 1132 48525 13942 79.3 0.674 ! Near Maximum !
-02.0 114 30.58 2088 1162 50266 14176 80.1 0.662 ! Near Maximum !
-01.0 115 30.89 2115 1192 52077 14410 80.8 0.651 ! Near Maximum !
+00.0 116 31.20 2142 1223 53966 14643 81.5 0.640 ! Near Maximum !
+01.0 118 31.51 2169 1254 55938 14875 82.2 0.629 !DANGEROUS LOAD-DO NOT USE!
+02.0 119 31.82 2197 1286 57995 15105 82.9 0.618 !DANGEROUS LOAD-DO NOT USE!
+03.0 120 32.14 2225 1319 60145 15333 83.6 0.607 !DANGEROUS LOAD-DO NOT USE!
+04.0 121 32.45 2253 1353 62391 15559 84.3 0.597 !DANGEROUS LOAD-DO NOT USE!
+05.0 122 32.76 2281 1387 64739 15784 85.0 0.586 !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 116 31.20 2289 1396 64338 15843 89.5 0.590 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 116 31.20 1975 1039 44601 13005 71.5 0.702
Cartridge : 7 mm T/CU
Bullet : .284, 120, Nosler BalTip 28120
Useable Case Capaci: 30.031 grain H2O = 1.950 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Powder : IMR 4895
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
-10.0 103 28.62 1917 979 37483 13391 74.9 0.768
-09.0 105 28.94 1944 1007 38823 13655 75.7 0.755
-08.0 106 29.26 1971 1035 40223 13919 76.5 0.741
-07.0 107 29.57 1998 1064 41679 14183 77.3 0.728
-06.0 108 29.89 2026 1093 43196 14447 78.2 0.716
-05.0 109 30.21 2053 1124 44777 14710 78.9 0.703
-04.0 110 30.53 2082 1155 46425 14972 79.7 0.690
-03.0 111 30.85 2110 1186 48147 15233 80.5 0.678 ! Near Maximum !
-02.0 113 31.16 2139 1219 49942 15493 81.3 0.666 ! Near Maximum !
-01.0 114 31.48 2167 1252 51818 15751 82.1 0.654 ! Near Maximum !
+00.0 115 31.80 2197 1286 53778 16006 82.8 0.642 ! Near Maximum !
+01.0 116 32.12 2226 1320 55828 16260 83.6 0.631 !DANGEROUS LOAD-DO NOT USE!
+02.0 117 32.44 2256 1356 57974 16512 84.3 0.619 !DANGEROUS LOAD-DO NOT USE!
+03.0 118 32.75 2285 1392 60219 16761 85.1 0.608 !DANGEROUS LOAD-DO NOT USE!
+04.0 119 33.07 2316 1429 62570 17006 85.8 0.597 !DANGEROUS LOAD-DO NOT USE!
+05.0 121 33.39 2346 1467 65036 17248 86.5 0.586 !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 115 31.80 2362 1487 66010 17281 91.2 0.586 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 115 31.80 2006 1072 43252 14128 72.0 0.712DrMike
Ballistician
- Nov 8, 2006
- 37,216
- 5,708
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 27.997 grain H2O = 1.818 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Powder : IMR 4895
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
-10.0 102 26.28 1789 995 38068 12888 78.4 0.821
-09.0 103 26.57 1814 1022 39409 13128 79.2 0.806
-08.0 104 26.86 1838 1050 40803 13368 79.9 0.793
-07.0 105 27.16 1863 1079 42252 13606 80.7 0.779
-06.0 106 27.45 1888 1108 43763 13845 81.5 0.765
-05.0 107 27.74 1913 1137 45335 14082 82.2 0.752
-04.0 109 28.03 1938 1167 46970 14317 82.9 0.739 ! Near Maximum !
-03.0 110 28.32 1963 1198 48673 14551 83.7 0.727 ! Near Maximum !
-02.0 111 28.62 1989 1230 50453 14782 84.4 0.714 ! Near Maximum !
-01.0 112 28.91 2015 1262 52306 15012 85.1 0.702 ! Near Maximum !
+00.0 113 29.20 2041 1295 54240 15240 85.8 0.689 ! Near Maximum !
+01.0 114 29.49 2067 1328 56260 15466 86.5 0.677 !DANGEROUS LOAD-DO NOT USE!
+02.0 115 29.78 2094 1362 58368 15688 87.1 0.666 !DANGEROUS LOAD-DO NOT USE!
+03.0 117 30.08 2120 1397 60573 15907 87.8 0.654 !DANGEROUS LOAD-DO NOT USE!
+04.0 118 30.37 2147 1433 62878 16123 88.5 0.642 !DANGEROUS LOAD-DO NOT USE!
+05.0 119 30.66 2174 1469 65290 16336 89.1 0.631 !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 113 29.20 2187 1486 66457 16245 93.5 0.630 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 113 29.20 1870 1087 43547 13622 75.3 0.764
Cartridge : 7 mm T/CU
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 27.997 grain H2O = 1.818 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Powder : Hodgdon H322
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 95 23.76 1804 1011 39192 12569 87.9 0.806
-09.0 96 24.02 1826 1036 40464 12769 88.5 0.793
-08.0 97 24.29 1848 1062 41781 12967 89.1 0.781
-07.0 98 24.55 1871 1088 43143 13163 89.7 0.769
-06.0 99 24.82 1893 1114 44553 13358 90.3 0.756
-05.0 100 25.08 1916 1141 46014 13549 90.9 0.744
-04.0 101 25.34 1938 1168 47526 13738 91.5 0.733 ! Near Maximum !
-03.0 102 25.61 1961 1196 49091 13924 92.0 0.721 ! Near Maximum !
-02.0 103 25.87 1984 1224 50716 14107 92.5 0.710 ! Near Maximum !
-01.0 104 26.14 2007 1252 52397 14288 93.1 0.699 ! Near Maximum !
+00.0 105 26.40 2030 1281 54141 14464 93.6 0.688 ! Near Maximum !
+01.0 106 26.66 2053 1310 55950 14638 94.1 0.677 !DANGEROUS LOAD-DO NOT USE!
+02.0 107 26.93 2076 1340 57826 14807 94.5 0.667 !DANGEROUS LOAD-DO NOT USE!
+03.0 109 27.19 2099 1370 59775 14971 95.0 0.656 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 27.46 2123 1401 61794 15133 95.4 0.646 !DANGEROUS LOAD-DO NOT USE!
+05.0 111 27.72 2146 1432 63898 15289 95.8 0.636 !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 105 26.40 2148 1435 65165 14832 98.6 0.634 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 26.40 1883 1102 44331 13408 84.9 0.755Again, for maximum velocities, Varget is not your best choice for a propellant.
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 27.997 grain H2O = 1.818 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 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
-10.0 103 25.74 1747 949 38293 11769 77.3 0.816
-09.0 104 26.03 1770 974 39588 11985 78.0 0.803
-08.0 105 26.31 1793 999 40932 12200 78.7 0.789
-07.0 107 26.60 1816 1025 42325 12416 79.4 0.776
-06.0 108 26.88 1839 1051 43776 12631 80.1 0.763
-05.0 109 27.17 1862 1078 45280 12845 80.8 0.751
-04.0 110 27.46 1886 1105 46845 13059 81.5 0.739
-03.0 111 27.74 1909 1133 48471 13272 82.2 0.727 ! Near Maximum !
-02.0 112 28.03 1933 1162 50161 13484 82.8 0.714 ! Near Maximum !
-01.0 113 28.31 1957 1191 51922 13695 83.5 0.703 ! Near Maximum !
+00.0 115 28.60 1982 1221 53744 13905 84.2 0.691 ! Near Maximum !
+01.0 116 28.89 2006 1251 55658 14113 84.8 0.679 !DANGEROUS LOAD-DO NOT USE!
+02.0 117 29.17 2031 1282 57649 14319 85.5 0.668 !DANGEROUS LOAD-DO NOT USE!
+03.0 118 29.46 2056 1313 59722 14523 86.1 0.657 !DANGEROUS LOAD-DO NOT USE!
+04.0 119 29.74 2081 1346 61884 14725 86.7 0.646 !DANGEROUS LOAD-DO NOT USE!
+05.0 120 30.03 2106 1378 64143 14925 87.4 0.635 !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 115 28.60 2112 1387 64088 14895 91.7 0.637 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 115 28.60 1831 1043 44423 12466 74.4 0.757- Thread starter
- #4
wildman
Beginner
- Jun 13, 2009
- 177
- 6
Thank you so much Dr.Mike for taking the time to help me with this data .Varget just isn't the golden child that I thought it might be in this small case just not enuff case capacity for it .
- Thread starter
- #5
wildman
Beginner
- Jun 13, 2009
- 177
- 6
Just wondering if anyone has tried any of the new powders that alliant and hodgdon has out in the 7mm tcu ?
DrMike
Ballistician
- Nov 8, 2006
- 37,216
- 5,708
Other possible powders to consider:
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 27.997 grain H2O = 1.818 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 54300 psi, or 374 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 !
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Accurate 2495 112.0 28.3 1.83 2067 95.5 54207 15695 0.713 ! Near Maximum !
Accurate 2520 109.0 29.7 1.92 2048 90.6 54300 15145 0.693 ! Near Maximum !
Lovex D073.6 111.5 29.7 1.92 2048 90.6 54300 15145 0.693 ! Near Maximum !
Lovex D073.5 103.4 28.6 1.86 2007 89.6 54300 14393 0.705 ! Near Maximum !
Accurate 2460 103.1 28.6 1.86 2007 89.6 54300 14393 0.705 ! Near Maximum !
Rottweil R901 108.8 26.7 1.73 2004 92.0 54300 14439 0.717 ! Near Maximum !
SNPE Vectan SP 7 107.9 29.9 1.94 1983 81.9 54300 13966 0.696 ! Near Maximum !
Hodgdon H380 112.0 29.5 1.91 1939 80.0 49295 13925 0.724 ! Near Maximum !
Bofors RP3 112.0 29.2 1.89 1919 83.4 45300 14219 0.753
Norma 203 old 112.0 29.2 1.89 1919 83.4 45300 14219 0.753
Accurate 4064 112.0 28.3 1.83 1909 88.6 43593 14537 0.788
IMR 4007 SSC 112.0 29.3 1.90 1887 75.0 49372 12858 0.730 ! Near Maximum !- Thread starter
- #7
wildman
Beginner
- Jun 13, 2009
- 177
- 6
Dr.Mike do any of the reloader series of powder show any better fps.?
DrMike
Ballistician
- Nov 8, 2006
- 37,216
- 5,708
My instinct tells me that you will run out of case before you get quicker loads. Rl15 is about as good as you'll be able to do.
RL10X may be better, giving you some room on case fill.
I believe those two are about the best you will do with Alliant powders.
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 27.997 grain H2O = 1.818 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Powder : Alliant Reloder-15
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
-10.0 102 26.37 1773 977 37764 12567 77.1 0.825
-09.0 103 26.66 1797 1003 39094 12802 77.9 0.810
-08.0 104 26.96 1821 1031 40479 13037 78.7 0.797
-07.0 106 27.25 1845 1059 41920 13272 79.4 0.783
-06.0 107 27.54 1870 1087 43419 13506 80.2 0.769
-05.0 108 27.84 1895 1116 44979 13739 80.9 0.756
-04.0 109 28.13 1920 1146 46605 13971 81.7 0.743
-03.0 110 28.42 1945 1176 48300 14201 82.4 0.730 ! Near Maximum !
-02.0 111 28.71 1971 1207 50066 14430 83.1 0.718 ! Near Maximum !
-01.0 112 29.01 1996 1239 51910 14658 83.8 0.705 ! Near Maximum !
+00.0 114 29.30 2022 1271 53831 14883 84.5 0.693 ! Near Maximum !
+01.0 115 29.59 2048 1304 55842 15106 85.2 0.681 !DANGEROUS LOAD-DO NOT USE!
+02.0 116 29.89 2074 1338 57941 15327 85.9 0.669 !DANGEROUS LOAD-DO NOT USE!
+03.0 117 30.18 2101 1372 60135 15544 86.6 0.657 !DANGEROUS LOAD-DO NOT USE!
+04.0 118 30.47 2127 1407 62430 15759 87.3 0.646 !DANGEROUS LOAD-DO NOT USE!
+05.0 119 30.77 2154 1443 64832 15970 87.9 0.634 !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 114 29.30 2167 1460 65792 15928 92.4 0.634 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 114 29.30 1853 1068 43279 13272 74.1 0.767RL10X may be better, giving you some room on case fill.
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 27.997 grain H2O = 1.818 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Powder : Alliant Reloder-15
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
-10.0 102 26.37 1773 977 37764 12567 77.1 0.825
-09.0 103 26.66 1797 1003 39094 12802 77.9 0.810
-08.0 104 26.96 1821 1031 40479 13037 78.7 0.797
-07.0 106 27.25 1845 1059 41920 13272 79.4 0.783
-06.0 107 27.54 1870 1087 43419 13506 80.2 0.769
-05.0 108 27.84 1895 1116 44979 13739 80.9 0.756
-04.0 109 28.13 1920 1146 46605 13971 81.7 0.743
-03.0 110 28.42 1945 1176 48300 14201 82.4 0.730 ! Near Maximum !
-02.0 111 28.71 1971 1207 50066 14430 83.1 0.718 ! Near Maximum !
-01.0 112 29.01 1996 1239 51910 14658 83.8 0.705 ! Near Maximum !
+00.0 114 29.30 2022 1271 53831 14883 84.5 0.693 ! Near Maximum !
+01.0 115 29.59 2048 1304 55842 15106 85.2 0.681 !DANGEROUS LOAD-DO NOT USE!
+02.0 116 29.89 2074 1338 57941 15327 85.9 0.669 !DANGEROUS LOAD-DO NOT USE!
+03.0 117 30.18 2101 1372 60135 15544 86.6 0.657 !DANGEROUS LOAD-DO NOT USE!
+04.0 118 30.47 2127 1407 62430 15759 87.3 0.646 !DANGEROUS LOAD-DO NOT USE!
+05.0 119 30.77 2154 1443 64832 15970 87.9 0.634 !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 114 29.30 2167 1460 65792 15928 92.4 0.634 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 114 29.30 1853 1068 43279 13272 74.1 0.767I believe those two are about the best you will do with Alliant powders.
- Thread starter
- #9
wildman
Beginner
- Jun 13, 2009
- 177
- 6
thank you dr.mike, did you mean to send duplicates of the 140 rl15 load or was there a mix up ?
DrMike
Ballistician
- Nov 8, 2006
- 37,216
- 5,708
wildman":3c1aww1s said:
Hmmmm. Looks like a major screw-up on my part. I've never made a mistake in my life. I have been momentarily confused a couple of times.
Try this as an alternative.
Code:
Cartridge : 7 mm T/CU
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 27.997 grain H2O = 1.818 cm³
Cartridge O.A.L. L6: 2.675 inch = 67.95 mm
Barrel Length : 10.0 inch = 254.0 mm
Powder : Alliant Reloder-10x
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 92 22.50 1808 1016 39797 12584 93.0 0.820
-09.0 93 22.75 1829 1040 41043 12758 93.5 0.808
-08.0 94 23.00 1850 1064 42327 12930 94.0 0.795
-07.0 95 23.25 1871 1089 43651 13099 94.5 0.783
-06.0 96 23.50 1893 1114 45017 13264 94.9 0.771
-05.0 98 23.75 1914 1139 46425 13427 95.3 0.760
-04.0 99 24.00 1935 1164 47877 13587 95.7 0.748 ! Near Maximum !
-03.0 100 24.25 1956 1190 49376 13743 96.1 0.737 ! Near Maximum !
-02.0 101 24.50 1978 1216 50922 13895 96.5 0.726 ! Near Maximum !
-01.0 102 24.75 1999 1242 52517 14044 96.9 0.715 ! Near Maximum !
+00.0 103 25.00 2020 1269 54163 14189 97.2 0.704 ! Near Maximum !
+01.0 104 25.25 2041 1296 55863 14329 97.5 0.694 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 25.50 2063 1323 57617 14466 97.8 0.684 !DANGEROUS LOAD-DO NOT USE!
+03.0 106 25.75 2084 1350 59429 14598 98.1 0.673 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 26.00 2105 1378 61300 14725 98.4 0.663 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 26.25 2127 1406 63234 14848 98.6 0.654 !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 103 25.00 2124 1403 64871 14116 99.9 0.649 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 25.00 1883 1103 43795 13539 90.3 0.776- Thread starter
- #11
wildman
Beginner
- Jun 13, 2009
- 177
- 6
very much appreciated Dr.Mike ....Happy New Year
- Nov 4, 2004
- 24,990
- 7,950
IMHO, the 120 gr BT would be a great bullet choice for the 7mm TCU. The higher velocity will help with expansion and flatter trajectory.
JD338
JD338
- Thread starter
- #13
wildman
Beginner
- Jun 13, 2009
- 177
- 6
Having trouble with accuracy with the 120 's I tried the hornady 120 ssp bullet they just weren't long enuff my barrel has a really long throat .Had some 140 nosler bt they will cut bullet holes at 100 yards just got a box of 120 nosler bt in going to give them a try but i'm afraid there going to be like the hornady's my gun just won't group good if the bullet has to jump over .010.
