Whatever the freebore length is, in the example I cited where magazine length is the driver the shorter, lighter Sierra remains closer to the lands.
I wish commercial 308's were throated shorter. Seated to 2.8" I'm jumping 168 gr Match Kings nearly 1/8" in a couple.
That's a lot of jump, but hey, Matchkings can usually take it. It seems odd to me that many are throated like they are being the round was designed commercially to fit the old short action pre-64 Mod 70s.
