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Rifles, Reloading, Optics, Equipment
Gunsmithing
Muzzle brake clearance
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<blockquote data-quote="J E Custom" data-source="post: 1485143" data-attributes="member: 2736"><p>Durring our recoil test, we tested many things to determine what effects they had on "TOTAL" performance trying to squeeze every ounce of recoil reduction out of a brake. </p><p>this was our finding on the bore size issue.</p><p></p><p>Starting with a bore diameter of .005 larger than the bore to .030 larger we found that there were some very minor accuracy effects with anything smaller than .010. We could only guess that it had to do with the shock wave striking the baffles and bouncing back the bullet off the causing it to yawl. We saw no effect when we exceeded .010. </p><p></p><p>Note : All test were performed with brakes that were installed on the barrel while still setup and bored to exact dimensions true to the bore. I don't recommend .010 clearance, if it is not installed and bored this way.</p><p></p><p>As we went up in bore size, we found no change in recoil reduction or accuracy until we reached .020+ depending on the efficiency of the brake recoil reduction began to degrade past .025 to .030. </p><p></p><p>So we recommend a .020 bore diameter if installed correctly and a .030 for safety if purchased separately. </p><p></p><p>Any bore diameter larger than .030 only reduces the efficiency of the brake by a measurable amount as it gets larger. We have sense tested brakes for larger calibers and found they were less effective and produced more muzzle flash.</p><p></p><p>Your .330 bore diameter will be perfectly safe to use so I would recommend trying it first. Without a precise measuring device you may not be able to "Feel" any difference. but there is a loss of efficiency. How much is to much is up to you.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1485143, member: 2736"] Durring our recoil test, we tested many things to determine what effects they had on "TOTAL" performance trying to squeeze every ounce of recoil reduction out of a brake. this was our finding on the bore size issue. Starting with a bore diameter of .005 larger than the bore to .030 larger we found that there were some very minor accuracy effects with anything smaller than .010. We could only guess that it had to do with the shock wave striking the baffles and bouncing back the bullet off the causing it to yawl. We saw no effect when we exceeded .010. Note : All test were performed with brakes that were installed on the barrel while still setup and bored to exact dimensions true to the bore. I don't recommend .010 clearance, if it is not installed and bored this way. As we went up in bore size, we found no change in recoil reduction or accuracy until we reached .020+ depending on the efficiency of the brake recoil reduction began to degrade past .025 to .030. So we recommend a .020 bore diameter if installed correctly and a .030 for safety if purchased separately. Any bore diameter larger than .030 only reduces the efficiency of the brake by a measurable amount as it gets larger. We have sense tested brakes for larger calibers and found they were less effective and produced more muzzle flash. Your .330 bore diameter will be perfectly safe to use so I would recommend trying it first. Without a precise measuring device you may not be able to "Feel" any difference. but there is a loss of efficiency. How much is to much is up to you. J E CUSTOM [/QUOTE]
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Muzzle brake clearance
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