Discussion in 'Handloading and Reloading' started by Vloc1987, May 10, 2021.
Resizing new brass will probably worsen accuracy rather than improve it.
So would it be best to get a factory crimp die for the first firing. I assume after I resize fired brass and use my bushing dies then I will have enough neck tension to not use a factory crimp die?
Yup. I even run *-* (Starline) brass through a sizing die before loading the first time. I get maybe two out of thirty that are oversize or oblong out of every batch. Starline, in my experience (YMMV) has been the most consistent commercial mass-market brass around. Rem used to be real good, Federal ditto, Winchester is hit-n-miss but mostly good from the box, fresh.
so I have the Redding 3 die set, neck sizer, full length/ shoulder bump sizer and the seating die. Would it be good just to neck size it only without using the body die on it?
I run new and fired brass through my FL die. I don’t neck size. New brass will have the shoulder in a position to fit all chambers. Your FL die will not come in contact with it. What you’re doing is uniforming the neck of your new brass to get consistent neck tension.
After you fire your new brass for the first time the case will form to your chamber’s dimensions and then you’ll need to bump the shoulder back 0.002”-0.003”
Neck sizing vs FL sizing is another subject that will generate strong opinions on both sides. Suffice to say that when it comes to accuracy, every modern competitive shooter who strives for the most accurate load they can make will FL sizes their brass.
I know the stuff that runs through MY dies work for the rifles they are set for.
I have a 308 Winchester for which I use Lapua brass and have found no need to crimp it at all. You shouldn't have to crimp for the first or later firings. The 460 S&W Magnum is a special case; i.e., a lot of recoil in a handgun.
There are some cartridges I do crimp; things like the 375 H&H Magnum and larger. I don't crimp 300 Weatherby Magnum cartridges and have never had a problem. For cartridges that I crimp, I prefer Lee Factory Crimp dies but use roll crimp dies for some straight wall cartridges.
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