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Sport45 · October 9, 2010, 04:19 AM

Did you back the crimp die out to where it doesn't touch the case with the ram all the way up? If so, what kind of trimmer are you using? The pilot may be enlarging the case neck. You may have to run the cases through the sizing die again to get the proper neck tension.

The cannelure doesn't have anything to do with how well the case neck holds the bullet. For .223, I load to the length I want without regard to where the cannelure winds up in relation to the case mouth. Some folks crimp, but I haven't found a need to with my AR's.

October 9, 2010, 04:19 AM	#4
Sport45 Senior Member Join Date: May 26, 1999 Location: Too close to Houston Posts: 4,196	Did you back the crimp die out to where it doesn't touch the case with the ram all the way up? If so, what kind of trimmer are you using? The pilot may be enlarging the case neck. You may have to run the cases through the sizing die again to get the proper neck tension. The cannelure doesn't have anything to do with how well the case neck holds the bullet. For .223, I load to the length I want without regard to where the cannelure winds up in relation to the case mouth. Some folks crimp, but I haven't found a need to with my AR's. __________________ Proud member of the NRA and Texas State Rifle Association. Registered and active voter. Last edited by Sport45; October 9, 2010 at 04:28 AM.