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As for the first question, I'm using Winchester small rifle. BTW, the brass is once fired if I did not mention that before.
As for the second question, I'm shooting an AR-15 sporter. The velocity I'm getting is about 500 fps less than the test rifle which was a Rem. 700. I'm no mathimatician (sp?) but I'd hope that's close to correct.
Is there a publication that will break down velocities according to barrel length?
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