What will fit in an AR mag?

[Guest Crud]

I'm looking at getting a few A max 75 grains to try out in my AR15, but in some of the reviews people are commenting on how they can only be reloaded by hand one at a time and are to long to fit in a mag. I haven't started reloading yet and I am not really going to do much reading on it, so is there any way I can tell if it will fit in an AR15?

[Guest DaG]

I wouldn't think you would have any problems in an AR mag if you load short enough. Just be sure to back off your starting load by 10% and work up from there looking for pressure signs. Several manufactureres offer 75 gr loads.

DaG

[mikadosoft]

I reload 77 grain Sierra Matchkings for my AR now. I used to loaded the 75 grain Hornadys. Both will fit in a mag. 80 grains and up will not unless you have a special mag. My overall case length is 2.26" for the 77 grainers wth 23 grains of Accurate 2520 pushing it. Consider getting Reloaders Reference V9.3x74R. It has tons of load data and is free online. Be sure that your twist rate on your weapon can stablize a 75 grain bullet. I have to keep the 77 grainers separate from my other loads. My 1-8 twist barrel does fine, but 1-9 twists will not stablize that long of a bullet causing them to hit the target sideways.

John

Edited March 11, 2011 by mikadosoft