Originally Posted by Sully2
I wouldnt even do that!! Same amount of same powder in a new larger volumetric area....different burning then and it MAY be way off course.???
Sully, you know me well enough to know that I would only do that in a pinch, it's certainly not my SOP, but then I ignite very little factory ammunition.
The times I've done it, maybe 5 times, it did't seem to effect trajectory but then, thats just my observation.
I did it last year prior to my NM Mulie hunt. I had ordered 2 boxes of 338 Lapua/Lapua loads from HSM and specified the COAL I wanted. The rounds came in but at the SAMMI spec so I ran them out to what I wanted in the first place and I saw no detrimental trajectory changes. I was going through a protracted wait on reloading dies which I got after 6 months so 'factory' loads are as thing of the past now.
I'm sure you can geuss how I 'Ran them out'.......
Maybe I should say 'ran them out and bumped them back' in as much as I had the seater die but no NS or FL dies and a pile of brass.....
My concern was lost neck tension one reason for the crimp, besides....
To the OP, I crimp everything. That is SOP with me. Every caliber I reload. lets see, 223, 22-250, 300WSM, 300 WBY, 308 and 338. Of course the pistol rounds are roll crimped anyway. Everything else gets crimped with a Lee Collet Crimper, even pills with no cannelure. Not excessively, just a tad. I use a 'perfect crimp' on my press that insures a repeatable crimp pressure, first time, everytime.
Actually, crimping is an offshoot of the way I hunt. I tend to carry a number of cartridges in my coat pocket or pants pocket and trudging around in the woods tends to bang them around and I don't want the COAL to change.
Crimping is a personal preference on my part. Just insurance the way I look at it and I don't want to or desire to debate that....