How much increase...
- Thread starter safety
- Start date
wildbio_13
Beginner
- Feb 13, 2007
- 23
- 0
I can't talk to how crimping will affect pressures but I wonder why you would feel the need to crimp. From what I've read crimping is only necessary if shooting a lever action, semi-auto, or with the larger magnums. I hunt w/ a bolt action 7mm rem mag so don't see the need to crimp. I'm new to reloading so somebody correct me if I'm wrong.
- Nov 4, 2004
- 25,168
- 8,435
I only crimp my 44 mag. Everything else, including 338 RUM is loaded wit out a crimp.
JD338
JD338
safety:
I like a crimp on hunting rounds myself if it’s convenient, and practical. You’ve probably noticed that factory loads are crimped. Some claim it helps accuracy, by uniforming the start pressure. It shouldn’t increase the pressure, significantly though.
You would need bullets with a crimping groove, that is in the right place for an COL that works for you. If that is the case, there is no reason not to crimp. The Lee Factory Crimp Die, is an easy way to go. Some people use it to crimp when there isn’t any crimping groove on the bullet, but I don’t.
Howsomever, it’s not essential unless you have a heavy recoiling rifle, or for some certain action types, and it’s not always cut an dried, as to whether it’s necessary for function.
I would certainly crimp, and do, if loading cast bullets, or loading 44 Magnums, 357s, etc. in a revolver.
I think, that with most bottle-neck rifle cartridges, it may not be a good option, given other considerations of bullet seating, etc. and most people, in most cases, will opt out, myself included.
Smitty of the North
I like a crimp on hunting rounds myself if it’s convenient, and practical. You’ve probably noticed that factory loads are crimped. Some claim it helps accuracy, by uniforming the start pressure. It shouldn’t increase the pressure, significantly though.
You would need bullets with a crimping groove, that is in the right place for an COL that works for you. If that is the case, there is no reason not to crimp. The Lee Factory Crimp Die, is an easy way to go. Some people use it to crimp when there isn’t any crimping groove on the bullet, but I don’t.
Howsomever, it’s not essential unless you have a heavy recoiling rifle, or for some certain action types, and it’s not always cut an dried, as to whether it’s necessary for function.
I would certainly crimp, and do, if loading cast bullets, or loading 44 Magnums, 357s, etc. in a revolver.
I think, that with most bottle-neck rifle cartridges, it may not be a good option, given other considerations of bullet seating, etc. and most people, in most cases, will opt out, myself included.
Smitty of the North
