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The Range
Ammo & Reloading
.303 British reloading help
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<blockquote data-quote="swampratt" data-source="post: 4100156" data-attributes="member: 15054"><p>I do not load for 303 but when I am not wanting to destroy my rifle brass I reach for H4895.</p><p>You can reduce it quite a bit and accuracy does not suffer for me.</p><p>At least in .243 Winchester.</p><p></p><p>I did a brass fail test in .308 Winchester and R-P cases went over 50 reloads without failing.</p><p>Case head crack at 52 firings and I shot it 2 more times for 54 total reloads without annealing the case neck.</p><p></p><p>Varget powder was used and 165Game king HPBT the cases tested were full length sized each time.</p><p>Federal went over 40 Winchester case made it 17 reloads.That is thin and softer.</p><p></p><p>Now to make a case last much longer for me i measure my fired case at the base and mid way up the case and at the shoulder.</p><p></p><p>I will hone my die with a homemade mandrel checked up in a drill press with various grits of sandpaper wrapped around it and i wet sand.</p><p></p><p>Finish with 1500 grit and then you can polish it with Flitz or some Meguiars machine glaze.</p><p></p><p>I like to be able to size my cases down no more than .002" anywhere and prefer .00 to .01" and measure how far you are setting shoulders back.</p><p></p><p>^^^^ Read that last line.</p><p>If you are setting shoulders back .004" or more you are not helping the life of those cases.</p><p>.002" makes me feel better but .001" set back makes me happy.</p><p></p><p>I did that fail test because my Winchester cases were going 8 rounds then case head cracks formed and I had to find out why.</p><p>The big issue was I was setting shoulders back .008" !!!</p></blockquote><p></p>
[QUOTE="swampratt, post: 4100156, member: 15054"] I do not load for 303 but when I am not wanting to destroy my rifle brass I reach for H4895. You can reduce it quite a bit and accuracy does not suffer for me. At least in .243 Winchester. I did a brass fail test in .308 Winchester and R-P cases went over 50 reloads without failing. Case head crack at 52 firings and I shot it 2 more times for 54 total reloads without annealing the case neck. Varget powder was used and 165Game king HPBT the cases tested were full length sized each time. Federal went over 40 Winchester case made it 17 reloads.That is thin and softer. Now to make a case last much longer for me i measure my fired case at the base and mid way up the case and at the shoulder. I will hone my die with a homemade mandrel checked up in a drill press with various grits of sandpaper wrapped around it and i wet sand. Finish with 1500 grit and then you can polish it with Flitz or some Meguiars machine glaze. I like to be able to size my cases down no more than .002" anywhere and prefer .00 to .01" and measure how far you are setting shoulders back. ^^^^ Read that last line. If you are setting shoulders back .004" or more you are not helping the life of those cases. .002" makes me feel better but .001" set back makes me happy. I did that fail test because my Winchester cases were going 8 rounds then case head cracks formed and I had to find out why. The big issue was I was setting shoulders back .008" !!! [/QUOTE]
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