10MM
1.250 COAL
New starline brass
Winchester large pistol magnum primers seated to .005"
Crimp diameter : 0.4231"
Projectile : Everglades 180GR JHP
Firearm : Glock G20SF with an alpha wolf threaded barrel 5.2"
Chronograph : Prochronograph digital, 8FT away from muzzle
Weather : 87F / 72% Humidity / 1,276 ft (389 m) elevation
10.2 GR Alliant Bluedot
1214, 1224, 1222, 1215, 1230, 1192, 1243, 1201
AVG : 1217.62 SD : 10.971
Muzzle energy : 592 (ft.lbf)
10.5GR Alliant Bluedot
1256, 1250, 1257, 1230, 1233, 1254, 1230, 1246
AVG : 1244.5 SD : 10.977
Muzzle energy : 619 (ft.lbf)
8.5GR Alliant Power Pistol
1235, 1226, 1247, 1268, 1251, 1259, 1256, 1265
AVG : 1250.87 SD : 13.55
Muzzle energy : 625 (ft.lbf)
8.7GR Alliant Power Pistol
1287, 1272, 1261, 1259, 1256, 1255, 1248, 1265
AVG : 1262.87 SD : 11.2
Muzzle energy : 638 (ft.lbf)
9.3GR Hogdon Longshot
1295, 1328, 1307, 1313, 1300, 1320, 1332, 1334
AVG : 1316.12 SD : 13.81
Muzzle energy : 692 (ft.lbf)
9.5GR Hogdon Longshot
1288, 1345, 1333, 1297, 1338, 1293, 1302, 1285
AVG : 1310 SD : 22.82
Muzzle energy : 686 (ft.lbf)
9.7GR Hogdon Longshot
1304, 1316, 1359, 1374, 1381, 1366, 1336, 1384
AVG : 1352.5 SD : 28.39
Muzzle energy : 730 (ft.lbf)
For funs :
1911 STI Trojan
5" barrel
9MM 147GR everglades FMJ
4.0GR VV N340
1.140 COAL
933, 952, 951, 955, 950, 936, 940, 951, 946
Avg : 946 SD: 7.3!!!
Muzzle energy : 292 (ft.lbf)
Power factor : 139.06
Very Nice Chris, Thanks for sharing the data and the results... ;D
Thanks for the data.
Looks like you passed the Longshot plateau, any pressure signs with the 9.7 load?
Quote from: Sobrbiker on July 05 2018 09:03:15 PM MDT
Looks like you passed the Longshot plateau, any pressure signs with the 9.7 load?
I took pictures of all the fired brass casings. Comparing 9.7 to 9.3, I'd say there's a significant pressure difference to warrant concern :o :o :o :o ;D