The Firing Line Forums - View Single Post - AR-15 Fail To Feed My Reloads What Do I Try Next

Jim243 · June 13, 2011, 08:22 PM

This is just a wild guess, but since the mags are new, you may be experiencing a problem with the size of the base of the cartrage. Most companies will recommend that you use a X-Small Base full length resizing die. I use a RCBS one and no more FTFs. The other thing is to bump the shoulder of the case to the correct spec's. This is done by using a case length gauge when setting up your dies and press.

This is a case that needs to be bumped. Does make a difference.

Jim

June 13, 2011, 08:22 PM	#9
Jim243 Senior Member Join Date: January 5, 2009 Location: Just off Route 66 Posts: 5,067	This is just a wild guess, but since the mags are new, you may be experiencing a problem with the size of the base of the cartrage. Most companies will recommend that you use a X-Small Base full length resizing die. I use a RCBS one and no more FTFs. The other thing is to bump the shoulder of the case to the correct spec's. This is done by using a case length gauge when setting up your dies and press. This is a case that needs to be bumped. Does make a difference. Jim __________________ Si vis pacem, para bellum