OK, here is my setup:
Gun is a norinco NP-22, sig 226 clone, 4.25” barrel
Bullets are DRG 125 gr, 0.356” diam, ~0.609 length (not consistent):
Powders: Unique, clays
I bought 147 gr Winchester super-x factory rounds, OAL ~ 1.110-1.120 (not consistent)
I made up 2 cartridges (no powder) with my bullets:
One with 1.150 OAL which has the bullet “step down” a bit above the rim of the brass:
One with 1.115 OAL which has the bullet “step down” in line with the rim of the brass:
All 3 cartridges chamber in the barrel, and all 3 load in the magazine no problem.
So….. any further advice on which seating/ charge would be best.
Here is some reference data I found online/in books:
Alliant online reloading guide:
124 gr speer GDHP, unique, 1.120”, 5.8gr (max, 1180 fps)
Lee loading data that came with dies:
125 gr lead bullet, unique, 1.150", 5.3gr (start), 5.5gr (max, 1139 fps)
Hornady 7th ed reloading book:
124 gr LRN (.355"), unique, 1.090", 4.0gr (start, 900 fps), 5.0gr (max, 1100 fps)
124 gr FMJ-RN ENC (.355"), unique, 1.150", 4.0gr (start, 900 fps), 5.0gr (max, 1100 fps)
Lyman 49th ed book:
120 gr LRN (alloy #2), unique, 1.065", 4.0gr (start, 1013 fps, 27,300 CUP),
5.0gr (max, 1194 fps, 31,600 CUP)
Gunloads.com online load:
125 gr lead bullet, unique, 4.7gr (1145 fps)
Hodgdon online reloading guide:
125 gr LCN (.356"), Clays, 1.125", 2.9gr (start, 899 fps, 22,700 CUP),
3.3gr (max, 993 fps, 30,900 CUP)
125 gr sierra FMJ (.355"), Clays, 1.090", 3.5gr (start, 1010 fps, 28,000 CUP)
3.7gr (max, 1056 fps, 32,500 CUP)
Based on that, im thinking that ill go with 1.115 OAL and start with 4.0gr unique, and work up to 5.0gr, and then try 2.9gr clays and work up to 3.3gr…. Thoughts???
Either way I don’t want to charge too low for the bullet to get stuck in the barrel, or too hot that I destroy the gun/injure myself