Originally Posted by
Tripplebeards
Can you post the quicksand data you ran please?
First off, I would not push Green Dot too hard in the 10mm. If you are looking for more power, use a better powder (Power pistol, AA#5, AA#7, AA#9, Lovex D037.2/Heavy Pistol seem best, Herco, 2400, HS-6, Longshot and Unique are all better than Green Dot). I will run the numbers out past where I would stop. However, this just for your info, not because I would ever try them (unless it was in an Encore or something similar).
Also note that the estimated performance in the first table is based on a seating depth of 0.350". Other 180 gr bullets I looked had different seating depth for the same AOL. The 10mm is not a big case, and changes in load density (a.k.a. fill %) can make a big difference.
Code:
Cartridge : 10 mm Auto (SAAMI)
Bullet : .400, 180, Speer HP GD 4406
Useable Case Capaci: 14.274 grain H2O = 0.927 cm³
Cartridge O.A.L. L6: 1.250 inch = 31.75 mm
Barrel Length : 4.6 inch = 116.8 mm
Powder : Alliant GREEN DOT
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-30.3 63 4.60 897 322 18654 3058 100.0 0.672
-27.3 65 4.80 923 340 20183 3166 100.0 0.645
-24.2 68 5.00 948 359 21777 3275 100.0 0.621
-21.2 71 5.20 972 378 23436 3383 100.0 0.599
-18.2 74 5.40 996 396 25162 3490 100.0 0.579
-15.2 76 5.60 1019 415 26956 3597 100.0 0.560
-12.1 79 5.80 1042 434 28819 3704 100.0 0.542
-09.1 82 6.00 1065 453 30752 3810 100.0 0.526
-06.1 84 6.20 1087 472 32758 3916 100.0 0.511 ! Near Maximum !
-03.0 87 6.40 1109 491 34837 4021 100.0 0.496 ! Near Maximum !
+00.0 90 6.60 1130 510 36992 4126 100.0 0.483 !DANGEROUS LOAD-DO NOT USE!
+03.0 93 6.80 1151 530 39224 4230 100.0 0.470 !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 6.60 1144 523 41324 4062 100.0 0.464 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 90 6.60 1110 492 32357 4217 100.0 0.509 ! Near Maximum !
To show the seating depth difference, I also ran a 1/8" shorter AOL (0.475" seating depth).
Code:
Cartridge : 10 mm Auto (SAAMI)
Bullet : .400, 180, Speer HP GD 4406
Useable Case Capaci: 10.301 grain H2O = 0.669 cm³
Cartridge O.A.L. L6: 1.125 inch = 28.58 mm
Barrel Length : 4.6 inch = 116.8 mm
Powder : Alliant GREEN DOT
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-30.3 87 4.60 969 375 27751 2791 100.0 0.571
-27.3 91 4.80 996 397 30233 2886 100.0 0.549
-24.2 94 5.00 1023 418 32848 2981 100.0 0.529 ! Near Maximum !
-21.2 98 5.20 1049 439 35602 3075 100.0 0.511 ! Near Maximum !
-18.2 102 5.40 1074 461 38500 3168 100.0 0.493 !DANGEROUS LOAD-DO NOT USE!
-15.2 106 5.60 1099 483 41548 3261 100.0 0.478 !DANGEROUS LOAD-DO NOT USE!
-12.1 110 5.80 1123 504 44751 3353 100.0 0.463 !DANGEROUS LOAD-DO NOT USE!