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Rifles, Reloading, Optics, Equipment
Gunsmithing
Questions about reamers
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<blockquote data-quote="J E Custom" data-source="post: 1348514" data-attributes="member: 2736"><p>Designing a chamber/cartridge is not for the inexperienced because there are many variables that have to be taken into account depending on the intended use.</p><p></p><p>There is a lot of misinformation that Is available and can be misleading and depending on your needs, "Disastrous" . Wild cats are even more</p><p>critical to dimensional differences and take great care and understanding when designing.</p><p></p><p>My recommendation would be to contact Manson reamers or JGS and talk to them about what you want. They can advise you of what to do and make recommendations on certain dimensions to keep you out of trouble. you can also use the SAMME 300 win mag chamber drawing, and simply change the neck diameter, leaving the shoulder datum line the same. (This would be the safe way to go and eliminate many problems).</p><p></p><p>I also don't recommend a special chamber for a specific bullet because if the barrel doesn't like it you may be screwed if you try a different bullet. (Load ammo to suite the chamber, don't cut a chamber to suite a bullet). There are plenty of different long range(heavy) bullets to chose from.</p><p></p><p>I also believe that a HSS reamer does the best job and recommend the freebore and throat be built into the reamer. (You can always throat later if needed). SAAME chamber designs are the safest and most trouble free if they are used and with good loading practices can be just as accurate without getting tricky. Only real experienced smiths can wade off into special chamber dimensions without getting in trouble and even sometimes they also experience problems but they know what to do to correct the problem.</p><p></p><p>This is just my opinion and I hope it helps.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1348514, member: 2736"] Designing a chamber/cartridge is not for the inexperienced because there are many variables that have to be taken into account depending on the intended use. There is a lot of misinformation that Is available and can be misleading and depending on your needs, "Disastrous" . Wild cats are even more critical to dimensional differences and take great care and understanding when designing. My recommendation would be to contact Manson reamers or JGS and talk to them about what you want. They can advise you of what to do and make recommendations on certain dimensions to keep you out of trouble. you can also use the SAMME 300 win mag chamber drawing, and simply change the neck diameter, leaving the shoulder datum line the same. (This would be the safe way to go and eliminate many problems). I also don't recommend a special chamber for a specific bullet because if the barrel doesn't like it you may be screwed if you try a different bullet. (Load ammo to suite the chamber, don't cut a chamber to suite a bullet). There are plenty of different long range(heavy) bullets to chose from. I also believe that a HSS reamer does the best job and recommend the freebore and throat be built into the reamer. (You can always throat later if needed). SAAME chamber designs are the safest and most trouble free if they are used and with good loading practices can be just as accurate without getting tricky. Only real experienced smiths can wade off into special chamber dimensions without getting in trouble and even sometimes they also experience problems but they know what to do to correct the problem. This is just my opinion and I hope it helps. J E CUSTOM [/QUOTE]
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