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.338 BR vs .338 Spectre
I’m debating between the .338 BR vs .338 Spectre. There doesn’t seem to be Starline 10mm magnum brass available for the Spectre so I’m leaning towards the .338 BR (Whisper) since it uses the more common 7mm BR brass and also the more common .308 bolt face. I can get dies for either so that’s not a problem.
Does anyone know if there is a .308 compatible bolt for a standard AR-15 upper (*not* AR-10)? Or can the 6.8 bolt face be opened up slightly from 0.421 to 0.473?
Any other advantages to one over the other?
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Threaded Mode