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Rifles, Reloading, Optics, Equipment
Gunsmithing
muzzle break reaming
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<blockquote data-quote="J E Custom" data-source="post: 541390" data-attributes="member: 2736"><p>I personally like to use a boring bar to size the break. I already have the barrel set up true </p><p>in the lathe for cutting the threads and it guarantees that the hole in the break is in perfict </p><p>alignment with the bore and also gives me the flexibility to customize the diameter.</p><p></p><p>Also I have seen poor installations where the bullet was striking the break and accuracy</p><p>was out the window. most of these were hand taped or threaded and only a few were </p><p>misalignment of the threads on the breaks and this was minimal. </p><p></p><p>I have experimented with enlarging the ports as they go out and found no measurable </p><p>difference in recoil reduction.( also the bore diameter ).</p><p></p><p>Reaming is probably the most common way but you have to have a lot of reamers to</p><p>do all of the sizes.</p><p></p><p>That being said: I have tried boring the break very close to see the effects(.004 larger</p><p>than the bore) and had no bullet strikes but saw no improvement in recoil reduction but</p><p>did see some accuracy loss until the bore was .015 larger.</p><p></p><p>After that the bore size did not effect accuracy but loss of recoil reduction did occur after </p><p>.030.</p><p></p><p>So in my mind, this confirms that the bore should be close to .020 thousandths.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 541390, member: 2736"] I personally like to use a boring bar to size the break. I already have the barrel set up true in the lathe for cutting the threads and it guarantees that the hole in the break is in perfict alignment with the bore and also gives me the flexibility to customize the diameter. Also I have seen poor installations where the bullet was striking the break and accuracy was out the window. most of these were hand taped or threaded and only a few were misalignment of the threads on the breaks and this was minimal. I have experimented with enlarging the ports as they go out and found no measurable difference in recoil reduction.( also the bore diameter ). Reaming is probably the most common way but you have to have a lot of reamers to do all of the sizes. That being said: I have tried boring the break very close to see the effects(.004 larger than the bore) and had no bullet strikes but saw no improvement in recoil reduction but did see some accuracy loss until the bore was .015 larger. After that the bore size did not effect accuracy but loss of recoil reduction did occur after .030. So in my mind, this confirms that the bore should be close to .020 thousandths. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
muzzle break reaming
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