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Old May 7, 2013, 12:21 PM   #1
Bart B.
Senior Member
Join Date: February 15, 2009
Posts: 6,318
.300 Sherman; Load Data?

I've a request from someone with load development software.

The .300 Sherman is a wildcat based on a blown out .270 Win. case that's vitrually the same as a .30-06 Ackley Improved round. The difference is its body is 2.150" head to shoulder compared to the Ackley's 2.017" as shown in the Ackley's drawing below.

The Sherman case capactiy's about 74 grains of water.

Most interested in the estimated peak pressure and powder charge needed to shoot a 190 Sierra out the muzzle of a 28" barrel at 3000 fps.

Thanks in advance for your help.
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master

Last edited by Bart B.; May 7, 2013 at 12:27 PM.
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