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Long Range Hunting & Shooting
Proof barrels
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<blockquote data-quote="NZ Longranger" data-source="post: 1535705" data-attributes="member: 14"><p>There's several chamberings based on Bruce Bertram's Brass, and then a similar one made for David Tubb by Peterson as well. The original was Kirby's 338 Raptor with the Bertram brass, then a guy in Aussie is doing one similar called the High Country Magnum. You can find a chamber drawing online for Davids version, called the 33XC. But this isn't helping me find out how much the SS steps down on a Proof barrel! Someone must have shot out a Proof barrel that could be sectioned or have the carbon ground off to see?</p></blockquote><p></p>
[QUOTE="NZ Longranger, post: 1535705, member: 14"] There's several chamberings based on Bruce Bertram's Brass, and then a similar one made for David Tubb by Peterson as well. The original was Kirby's 338 Raptor with the Bertram brass, then a guy in Aussie is doing one similar called the High Country Magnum. You can find a chamber drawing online for Davids version, called the 33XC. But this isn't helping me find out how much the SS steps down on a Proof barrel! Someone must have shot out a Proof barrel that could be sectioned or have the carbon ground off to see? [/QUOTE]
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