Thanks for the sources.
I would have thought a Magnum size follower would be correct, as you have said. However after some research, i found specs for followers that state that the 257 Weatherby uses the same follower as the 30-06, 270, 280, etc.
I know what you mean though, the math doesn't check out. 300 Win Mag, 300 RUM, and 7mm Mag should all use the same as the 257 Wby Mag. Being as the case diameters are almost the same at .511 and .513. While 30-06 case diameter sits at .470.
So maybe i have another issue? Problem is that I cannot load cartridges into the magazine, they keep popping back out making my rifle a single shot for the time being.
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