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The Basics, Starting Out
270 Sherman just starting out
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<blockquote data-quote="Alibiiv" data-source="post: 2250120" data-attributes="member: 69192"><p>With the .270 Ackley Improved I did not have any data to work up a load with. After doing some research I decided to start with 1/2 grain less then the SAAMI data for the .270 Winchester. I believe that starting the fire forming with the same data for the .270 Sherman ought to work quite well to fire form brass. What I have found after working on load development is that the .270 Ackley Improved is very close to the data provided for the .270 Winchester Short magnum, getting a little better performance with less powder than in the .270 WSM. </p><p></p><p>And......if you are building a .270 Sherman, Rich ought to be able to answer any questions that the OP has and usually he has some brass or is in the process of making brass for the round.</p></blockquote><p></p>
[QUOTE="Alibiiv, post: 2250120, member: 69192"] With the .270 Ackley Improved I did not have any data to work up a load with. After doing some research I decided to start with 1/2 grain less then the SAAMI data for the .270 Winchester. I believe that starting the fire forming with the same data for the .270 Sherman ought to work quite well to fire form brass. What I have found after working on load development is that the .270 Ackley Improved is very close to the data provided for the .270 Winchester Short magnum, getting a little better performance with less powder than in the .270 WSM. And......if you are building a .270 Sherman, Rich ought to be able to answer any questions that the OP has and usually he has some brass or is in the process of making brass for the round. [/QUOTE]
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