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That is a straight sided round. If the head is the same diameter as the rim, then the case has only .003" taper per side. An Ackley Improved case has a .0075" to .008" taper, normally, taking printed case dimensions of .469" and .454".
.003" taper is even less than my custom bored .375/06 IMP - at .005" taper(.470" - .460").
That .528" shoulder and 35degree shoulder angle is amazing.
What wonderful .338's through .416's it would make, or even a .458.(there are already too many 7mm's and .30's out there)
Thinking a .416 would be an awesome round..wonder what how much velocity one would get on this with a 350 and 400 gr round??
Ripp
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