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Rifles, Reloading, Optics, Equipment
Reloading
Bump Sizing Once Fired Brass from 2 Different Rifles
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<blockquote data-quote="BC Sportsman" data-source="post: 1836375" data-attributes="member: 113252"><p>I should add that I want to bump 0.002" since I will be using the reloaded rounds (with Barnes 190 gr LRX) for both long range shooting practice and hunting. There seem to be 3 camps of advice here that accommodate my desire to bump size:</p><p></p><div style="margin-left: 20px">1) Full size all cases from both the new and old rifle to SAAMI specs without using any bump. Then bump after they have been fired in the new rifle...<strong>or</strong></div> <div style="margin-left: 20px"></div> <div style="margin-left: 20px">2) Cull cases using headspace measurements to separate those fired in my old rifle. Full size all the old rifle cases to SAAMI specs without any bump as per option 1 above. Full size cases that I can confirm were fired in my new rifle using a 0.002" bump...<strong>or</strong></div> <div style="margin-left: 20px"></div> <div style="margin-left: 20px">3) Cull cases for headspace measurements to identify the cases fired in my old rifle and keep these batches separate from each other. Full size all the cases from both rifles using a 0.002" bump from the new rifle's max headspace. As long as the cases from the old rifle chamber easily after resizing with a 0.002" bump, I won't have any problems with the bolt seizing up or worse happening.</div><p></p><p>What I'm thinking of doing is first measuring all my brass to see if there are two distinct headspace measurement groups. I have some brass that I know came from my old rifle (I have since sold it) and my new rifle. If there are two distinct groups with no chance of doubt, then I will go with option 2.</p><p></p><p>If I can't find any measured differences that fall into two distinct groups, then I will resize all to SAAMI specs without doing any bump. My Forster datum dial tool should arrive next week.</p><p></p><p>Thank you everyone for your advice!</p></blockquote><p></p>
[QUOTE="BC Sportsman, post: 1836375, member: 113252"] I should add that I want to bump 0.002" since I will be using the reloaded rounds (with Barnes 190 gr LRX) for both long range shooting practice and hunting. There seem to be 3 camps of advice here that accommodate my desire to bump size: [INDENT]1) Full size all cases from both the new and old rifle to SAAMI specs without using any bump. Then bump after they have been fired in the new rifle...[B]or[/B][/INDENT] [INDENT][/INDENT] [INDENT]2) Cull cases using headspace measurements to separate those fired in my old rifle. Full size all the old rifle cases to SAAMI specs without any bump as per option 1 above. Full size cases that I can confirm were fired in my new rifle using a 0.002" bump...[B]or[/B][/INDENT] [INDENT][/INDENT] [INDENT]3) Cull cases for headspace measurements to identify the cases fired in my old rifle and keep these batches separate from each other. Full size all the cases from both rifles using a 0.002" bump from the new rifle's max headspace. As long as the cases from the old rifle chamber easily after resizing with a 0.002" bump, I won't have any problems with the bolt seizing up or worse happening.[/INDENT] What I'm thinking of doing is first measuring all my brass to see if there are two distinct headspace measurement groups. I have some brass that I know came from my old rifle (I have since sold it) and my new rifle. If there are two distinct groups with no chance of doubt, then I will go with option 2. If I can't find any measured differences that fall into two distinct groups, then I will resize all to SAAMI specs without doing any bump. My Forster datum dial tool should arrive next week. Thank you everyone for your advice! [/QUOTE]
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Bump Sizing Once Fired Brass from 2 Different Rifles
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