I've been reloading pistol calibers for a little while now. Looking to start loading for my AR-15. For various reasons, here is all I have on hand: CCI 450 Small Rifle Magnum primers, Hornady 55gr FMJ-BT bullets, and Reloder 15 powder. No books list an actual load for these components, but I hear stuff like this can be done so long as I carefully back off the charges sufficiently and work up. How far should I back off due to the magnum primers? I don't have a chrono, so I'll have to just use my own judgement on all of it.
I hear the CCI 450's make a good AR-15 primer because of the thicker cup. I hear Reloder 15 is a solid AR-15 powder, but is better with bigger bullets and longer barrels. None of my load data books list anything close to my combination, so any information would be appreciated. I just want decent plinking loads with acceptable accuracy.
Online I read of some people loading 55gr bullets on top of 25 grains of Reloder 15 with ok results... I also read that 27-28 grains is the max load.... would 24 grains be a good start or should I back off further?
Gun is a 16" barreled M&P-15. Thanks in advance.
I hear the CCI 450's make a good AR-15 primer because of the thicker cup. I hear Reloder 15 is a solid AR-15 powder, but is better with bigger bullets and longer barrels. None of my load data books list anything close to my combination, so any information would be appreciated. I just want decent plinking loads with acceptable accuracy.
Online I read of some people loading 55gr bullets on top of 25 grains of Reloder 15 with ok results... I also read that 27-28 grains is the max load.... would 24 grains be a good start or should I back off further?
Gun is a 16" barreled M&P-15. Thanks in advance.