Mikecr
Well-Known Member
If your barrel was chambered as tight neck, that is usually engraved on the barrel.
Like "260Rem (.290 neck)"
After firing the factory ammo, what do those unsized necks measure?
What do loaded necks with your unturned Lapua brass measure?
Like "260Rem (.290 neck)"
After firing the factory ammo, what do those unsized necks measure?
What do loaded necks with your unturned Lapua brass measure?