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Rifles, Reloading, Optics, Equipment
Gunsmithing
Muzzle Brake install
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<blockquote data-quote="IdahoCTD" data-source="post: 1677321" data-attributes="member: 13110"><p>Reamers don't always follow the original holes, even with a float reamer holder. There is a reason chamber reamers have pilots. Boring it is better IMO but he should of bored it on fresh cut threads, weather it was on the barrel or a piece of steel. Not all brakes come with the center hole concentric to the OD. Drilling something that deep, even with the best turning center, almost never results in a perfectly straight hole. So if measures aren't taken to make the exit hole concentric with the OD when it's crowned it can be off several thousandths. Reamers are nice if you bore the hole concentric to the threads first.</p><p></p><p>I will also add that timed brakes tend to move or over rotate as you take them on and off for the first little bit. Machining ridges lap themselves smooth and then they tend to stop rotating. I always leave a timed brake just under timed when I install them because of this.</p></blockquote><p></p>
[QUOTE="IdahoCTD, post: 1677321, member: 13110"] Reamers don't always follow the original holes, even with a float reamer holder. There is a reason chamber reamers have pilots. Boring it is better IMO but he should of bored it on fresh cut threads, weather it was on the barrel or a piece of steel. Not all brakes come with the center hole concentric to the OD. Drilling something that deep, even with the best turning center, almost never results in a perfectly straight hole. So if measures aren't taken to make the exit hole concentric with the OD when it's crowned it can be off several thousandths. Reamers are nice if you bore the hole concentric to the threads first. I will also add that timed brakes tend to move or over rotate as you take them on and off for the first little bit. Machining ridges lap themselves smooth and then they tend to stop rotating. I always leave a timed brake just under timed when I install them because of this. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Muzzle Brake install
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