Been hand loading 10mm Auto ammo since 1987.
Chronographed two great loads yesterday: accurate and powerful.
WARNING: These loads are true 10mm Auto Loads (not your typical 40 S&W + 30 to 50 fps factory loads) and produce velocities similar to the original Norma loads (170 grain / 1345 fps) from the tuned Colt Delta Elite with a 5" Ed Brown barrel.
The loads:
180 grain X-Treme HP
New Midway Brass
Federal 150 Primers
Accurate 7 Powder
1.250" OAL
Velocities (fps) Hi: 1278, Low: 1261, Ave: 1266, ES 17, SD 7
165 grain Rainier HP
New Midway Brass
Federal 155 Primers
Accurate 7 Powder
1.250" OAL
Velocities (fps) Hi: 1391, Low: 1381, Ave: 1385, ES 10, SD 3
Also chronographed the same loads from a 5" barrel Kimber 10mm.
180 grain velocities (fps) Hi: 1317, Low: 1244, Ave: 1272, ES 73, SD 26
165 grain velocities (fps) Hi: 1422, Low: 1367, Ave: 1392, ES 55, SD 23
Will try a magnum primer in the 180 grain load and fire for effect.
Will also back the 165 grain load down .2 to .3 grains and try for a 1350 fps average with similar ES and SD numbers.