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Rifles, Reloading, Optics, Equipment
Reloading
Neck turning, before or after fireforming, before transitioning to bushing neck sizing for sure
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<blockquote data-quote="Mikecr" data-source="post: 1277321" data-attributes="member: 1521"><p><strong>Re: Neck turning, before or after fireforming, before transitioning to bushing neck sizing for</strong></p><p></p><p>Your turning system would include neck expansion(of new brass) to fit the turning mandrel properly.</p><p>If it doesn't, I recommend getting a better system that does.</p><p>I only turn new brass, and I use a Sinclair turning system expander mandrel before seating bullets, in place of any other die 'expander ball'.</p><p>Whether FL sizing necks(which I would never do), or partial length sizing of necks, it's beneficial to pre-expand them (pre-seating) before bullet seating. This drives any thickness variance outward, away from seating bullet bearing, to lower runout. It also biases tension(bullet grip) inward, instead of outward, so that tension would grow over time(aging ammo) rather than drop. And finally, it reduces seating forces, which allows for more accuracy in CBTO.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1277321, member: 1521"] [b]Re: Neck turning, before or after fireforming, before transitioning to bushing neck sizing for[/b] Your turning system would include neck expansion(of new brass) to fit the turning mandrel properly. If it doesn't, I recommend getting a better system that does. I only turn new brass, and I use a Sinclair turning system expander mandrel before seating bullets, in place of any other die 'expander ball'. Whether FL sizing necks(which I would never do), or partial length sizing of necks, it's beneficial to pre-expand them (pre-seating) before bullet seating. This drives any thickness variance outward, away from seating bullet bearing, to lower runout. It also biases tension(bullet grip) inward, instead of outward, so that tension would grow over time(aging ammo) rather than drop. And finally, it reduces seating forces, which allows for more accuracy in CBTO. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck turning, before or after fireforming, before transitioning to bushing neck sizing for sure
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