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Rifles, Reloading, Optics, Equipment
Gunsmithing
Barrel Thread Question
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<blockquote data-quote="tmwtrfwler" data-source="post: 1203023" data-attributes="member: 72596"><p>maybe a dumb question but one that's come up with a project of mine. Follow me here for a second as I describe the project: </p><p></p><p>My goal is to suppress my Nosler M48 Liberty 300wm. It comes with a 24" magnum contour barrel that has an OD at the muzzle of .65 (confirmed by Nosler). </p><p></p><p>- Most don't recommend a 1/2x28 thread on a .30 cal can </p><p></p><p>- Thunderbeast has a great .pdf showing requirements (theirs at least): <a href="https://thunderbeastarms.com/tech/thread-specifications" target="_blank">https://thunderbeastarms.com/tech/thread-specifications</a> </p><p></p><p>- Per the diagram in the link above the Nosler .65 barrel would also be too small for a 9/16x24 as that requires .662. So I'm left with looking at 1/2x28. The shoulder would be too small if factoring a .003 shoulder as Thunderbeast requires. </p><p></p><p>- With Thunderbeast being out of the question for my project that led me to Crux Suppresors. </p><p></p><p>- They design their tolerance for a .002 shoulder and paired with their 1/2x28 break for a .30 cal can this rifle will be within spec on their end. As such I ordered their ARK30 which is 12oz and 7.5". </p><p></p><p>- Nosler can thread the barrel 1/2x28 for me as they thread all their brakes for 1/2x28 no matter the caliber. *I've got calls into other places like GAP, etc. that thread as well.</p><p></p><p>So, the question is this; Why can breaks be threaded 1/2x28 but for a suppressor it's not acceptable / recommended by some? Is it the weight of the can?</p><p></p><p>If it's really a big problem to thread 1/2x28 for a .30 cal can then I could always cut the barrel down an inch or two to get a bigger shoulder but I hate to lose velocity and powder burn. However, for a minute of deer/elk game gun it may not be a huge deal.</p></blockquote><p></p>
[QUOTE="tmwtrfwler, post: 1203023, member: 72596"] maybe a dumb question but one that's come up with a project of mine. Follow me here for a second as I describe the project: My goal is to suppress my Nosler M48 Liberty 300wm. It comes with a 24" magnum contour barrel that has an OD at the muzzle of .65 (confirmed by Nosler). - Most don't recommend a 1/2x28 thread on a .30 cal can - Thunderbeast has a great .pdf showing requirements (theirs at least): [url]https://thunderbeastarms.com/tech/thread-specifications[/url] - Per the diagram in the link above the Nosler .65 barrel would also be too small for a 9/16x24 as that requires .662. So I'm left with looking at 1/2x28. The shoulder would be too small if factoring a .003 shoulder as Thunderbeast requires. - With Thunderbeast being out of the question for my project that led me to Crux Suppresors. - They design their tolerance for a .002 shoulder and paired with their 1/2x28 break for a .30 cal can this rifle will be within spec on their end. As such I ordered their ARK30 which is 12oz and 7.5". - Nosler can thread the barrel 1/2x28 for me as they thread all their brakes for 1/2x28 no matter the caliber. *I've got calls into other places like GAP, etc. that thread as well. So, the question is this; Why can breaks be threaded 1/2x28 but for a suppressor it's not acceptable / recommended by some? Is it the weight of the can? If it's really a big problem to thread 1/2x28 for a .30 cal can then I could always cut the barrel down an inch or two to get a bigger shoulder but I hate to lose velocity and powder burn. However, for a minute of deer/elk game gun it may not be a huge deal. [/QUOTE]
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