Normally I do not do any crimping since I shoot match bullets. I'd like to load some cannelured FMJ bullets for plinking and defensive training, but I believe the Redding competition seater I have does not crimp at all. Roll crimping would be the best way to crimp with a cannelure, right? What could I use to apply a crimp?
Roll crimp for .223
- Thread starter Telperion
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atek3
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dagger dog
Member
ditto the lee factory crimp if your gonna use it out of a self defense rifle,full length dies will roll crimp if they are not of the competition type(no crimp wanted with these)you can get a .223 Rem Lee die set with crimp die for less than$30.00
W.E.G.
Member
A waste of time in my opinion.
You have probably noticed by now, when you run into a hard mis-feed (i.e. bolt slams live round into feed ramp, or into un-ejected case stuck in chamber), the bullet gets pushed back into the case even if it IS crimped.
Othewise, if the rifle is running properly, neck tension alone is quite adequate to ensure that the bullet is not pushed back into the case.
As it pertains to the AR15, the only merit of the crimp is to ensure that sealant is squished into the cannelure for a good watertight neck seal.
By contrast, in a hard-recoiling handgun, a hard mechanical crimp is necessary to keep the heavy bullets from "jumping the crimp" during recoil. You don't have to worry about 5.56 ammo jumping the crimp under the "recoil" of an AR15.
You have probably noticed by now, when you run into a hard mis-feed (i.e. bolt slams live round into feed ramp, or into un-ejected case stuck in chamber), the bullet gets pushed back into the case even if it IS crimped.
Othewise, if the rifle is running properly, neck tension alone is quite adequate to ensure that the bullet is not pushed back into the case.
As it pertains to the AR15, the only merit of the crimp is to ensure that sealant is squished into the cannelure for a good watertight neck seal.
By contrast, in a hard-recoiling handgun, a hard mechanical crimp is necessary to keep the heavy bullets from "jumping the crimp" during recoil. You don't have to worry about 5.56 ammo jumping the crimp under the "recoil" of an AR15.
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