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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Freebore
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<blockquote data-quote="rscott5028" data-source="post: 659617" data-attributes="member: 24624"><p>You can simply build your dumby round and send it to a good smith or the reamer mfg. </p><p> </p><p>Or, obtain a reamer print from PTG or other; stick it in a CAD program; overlay the cartridge and desired bullet verifying COAL for your magazine; and modify the reamer print. </p><p> </p><p>But, there's no free lunch...</p><p>shorter throat = seat deeper = less case capacity = lower velocity potential</p><p> </p><p>I'm sure there's some optimal freebore+lead angle for a given rifle/magazine/bullet/chamber/brass/powder combination. Guys like Shawn Carlock and Kirby Allen have played with this and may even be working on patents for their designs e.g. 338 Edge +P. </p><p> </p><p>But, it seems to me there's more to loose than to gain by experimenting for the average guy unless you have the instruments, tooling, and/or funding to experiment. </p><p> </p><p>Custom throating can perhaps be done by hand. And, you can go deeper. But, once you remove metal, you can't put it back. </p><p> </p><p>other options to consider...</p><p>wyatts mag box</p><p>long action vs short for your 7 rsaum</p><p>different cartridge</p><p>different bullet</p><p> </p><p>Did McMillan/EOL ever say if their modificaton was to the mag box or freebore, and/or lead angle? </p><p> </p><p>-- richard</p></blockquote><p></p>
[QUOTE="rscott5028, post: 659617, member: 24624"] You can simply build your dumby round and send it to a good smith or the reamer mfg. Or, obtain a reamer print from PTG or other; stick it in a CAD program; overlay the cartridge and desired bullet verifying COAL for your magazine; and modify the reamer print. But, there's no free lunch... shorter throat = seat deeper = less case capacity = lower velocity potential I'm sure there's some optimal freebore+lead angle for a given rifle/magazine/bullet/chamber/brass/powder combination. Guys like Shawn Carlock and Kirby Allen have played with this and may even be working on patents for their designs e.g. 338 Edge +P. But, it seems to me there's more to loose than to gain by experimenting for the average guy unless you have the instruments, tooling, and/or funding to experiment. Custom throating can perhaps be done by hand. And, you can go deeper. But, once you remove metal, you can't put it back. other options to consider... wyatts mag box long action vs short for your 7 rsaum different cartridge different bullet Did McMillan/EOL ever say if their modificaton was to the mag box or freebore, and/or lead angle? -- richard [/QUOTE]
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