The Firing Line Forums - View Single Post

Diesel9 · October 17, 2012, 05:04 PM

I appreciate your input. I'm here to learn.

I'm not clear about why you think the FCD is causing inaccuracy in my bullets. The bullets I'm using have a cannelure, and I'm only giving them a minimum crip. I doubt if I'm crushing the lead core of the bullets, although it can probably be done.

As I said earlier in this thread I'm no expert at reloading, especially in regard to rifle cartridges. I've read a lot of info on the subject and the general consensus seems to be that in order to prevent bullet setback, ammo used in magazine fed semi-autos should have a crimp (Lee FCD or otherwise). AR's with M4 feed ramps like mine are specifically pointed out as needing crimped ammo in a lot of what I've read.

Have I misunderstood something about this?

October 17, 2012, 05:04 PM	#10
Diesel9 Member Join Date: July 13, 2011 Location: Ohio Posts: 40	I appreciate your input. I'm here to learn. I'm not clear about why you think the FCD is causing inaccuracy in my bullets. The bullets I'm using have a cannelure, and I'm only giving them a minimum crip. I doubt if I'm crushing the lead core of the bullets, although it can probably be done. As I said earlier in this thread I'm no expert at reloading, especially in regard to rifle cartridges. I've read a lot of info on the subject and the general consensus seems to be that in order to prevent bullet setback, ammo used in magazine fed semi-autos should have a crimp (Lee FCD or otherwise). AR's with M4 feed ramps like mine are specifically pointed out as needing crimped ammo in a lot of what I've read. Have I misunderstood something about this? Last edited by Diesel9; October 17, 2012 at 05:11 PM.