Moderator: MudBug
lucasphi20 wrote:Sure any 450 will work, I just figured due to brass availability it would be a waste to use a good 450 case. I was hoping someone had a 284 out there they gave up on.
oldmanjeffers wrote:Lucasphil20, How many do you want? PM me with your address and I'll send you some in trade for your directions/ideas of making your bore sighter.
I in no way gave up on the 284/450 brass but have some "extras" that I will donate to the cause.
Hoot wrote:Closing the action on a .284 case is sometimes difficult if not dangerous for your extractor due to the differences between the rim and extractor groove diameters in the 450b being smaller than the .284 by design. You may want to use actual Hornady cases so as not to stress your extractor, or do as I did and turn down the rim and extractor groove diameters with a lathe or in a drill press with a file. This is a well documented fact that can be found in several threads here.
It has been postulated that the original run of 450b bolts were actually made to .284 dimensions, but as demand grew, Bushmaster went to the 7.62x39 bolt which is a different spec (narrower) than the .284 and less expensive to sub-contract out.
Hoot
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