Re: Neck turning and magazines?
My rule of thumb is crimp the pill in the neck if in doubt.
However, the crimp compression entirely depends on the end use, in other words, a gas blowback action would require a more agressive crimp than a bolt action and where you carry the ammunition (in your hunting jacket pocket on a hunt as an example and the weight of the pill versus the neck tension), also determines the crimp amount.
I use Lee collet crimpers exclusively. Reason being is I can control the amount of crimp, from almost nothing to actually crimping the pill without a cannulere.
Keep in mind that 99% of factory ammunition you purchase is crimped because the factory has no idea how it will be stored or handled or what it's used in by the end user.
Finally, I've never experienced any excessive pressure signs in hotter loads crimper versus not crimped. If it's loaded hot and pressure signs develop, it don't seem to matter if the cartridge is crimped or not....
Just my opinion and the way I reload.
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, it's about we