tmwtrfwler
05-22-16, 11:02
I posted this in the NFA section but think it may be better answered here?
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): https://thunderbeastarms.com/tech/thread-specifications
- 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.
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): https://thunderbeastarms.com/tech/thread-specifications
- 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.