OAL, or COL, doesn't mean squat. I have chamber measurements that very quite a bit from one bullet to the next.
My CBTO (cartridge base to ogive) can very as much as .020" from a Nosler bullet to a Sierra of the same weight. If you have a shorter chamber, some factory ammo might be jamming when chambered, as you've seen can happen. Just get an accurate measurement for each different bullet you care to load.
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