I was loading with some ABT and BHA Match brass the other night and was surprised to find the rim diameter on the BHA brass was so small that it wouldn't even lock in my Forstner trimmer. It measured around.465, whereas the ABT brass was fine but only measured .470. The specs in the Sierra manual list the rim diameter as .473. The cases are all once fired and all work just fine in my rifle. Just an interesting fact.
.308 Brass variation
- Thread starter ronl
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