Rifleman97
Well-Known Member
- Joined
- Dec 28, 2017
- Messages
- 382
It's also necessary for some specific cartridges, either due to poor design from the factory (looking at you WSSM's with horribly thick necks) or due to wildcatting a longer round that has been shortened and/or necked down. For example if you make 25-06 brass from 30-06 brass, the neck will be thicker than factory ammo. So you may have to turn the necks down just a tad.Truing the outside diameter of your case neck to create a more consistent neck wall thickness all the way around the entire neck. This creates a more consistent neck tension which leads to a more consistent bullet release with a final result hoping to achieve a lower and more consistent ES and SD. Others could explain it better than I can. Just buy good brass(Lapua, Peterson etc.) and you wont have to worry about it.
The only brass I turn is 30-378 weatherby because I think it's inconsistent enough to be worth it, and I hardly ever shoot it anyway so it's not too big of a time killer.