Threading a barrel effect on harmonics/accuracy

[LongWalker]

I know most folks seem to think fluting a barrel after it's been finished and fired can significantly change its harmonics and potentially effect accuracy but I can't find much discussion on just threading a barrel post finishing and installing.

I suppose any material removal will change the harmonics but would the little removed to thread 5/8 x 24 make a significant difference?

 

[Rhett Crider]

I know most folks seem to think fluting a barrel after it's been finished and fired can significantly change its harmonics and potentially effect accuracy but I can't find much discussion on just threading a barrel post finishing and installing.

I suppose any material removal will change the harmonics but would the little removed to thread 5/8 x 24 make a significant difference?

I wouldn't think the threading of it would. Same length. Adding a muzzle brake or suppressor would change it. Would need to rework your load slightly.

 

[mechengr]

Like you say, there's likely some change due to removing mass. Whether it's enough change to be realized on target is another story, I would lean toward the side of not enough impact to worry about. There will likely be more change due to the extra weight of the brake/suppressor/etc that you're screwing onto it.

Are you worried about screwing up a well tuned load?

 

[LongWalker]

Yes. I would expect a POI shift with the suppressor but I'd hate to have to rework the whole load. I'm on the high end node and don't remember where the next step down was.

 

[Hunterjones]

It's really hard to say........I have a SUPER ACCURATE Kimber Mountain Ascent in .300 WSM. At 300 yards with factory muzzle brake attached it's well under 1/2 MOA consistently, like 1/3 MOA if I'm having a good day. Remove brake and put muzzle protector on and it's 3 MOA or more.....

 

[mechengr]

Potentially having to rework the load is just the price we must pay for the advantage of brakes & suppressors. Maybe you'll get lucky and the same load will shoot just as well with the suppressor? In my short experience with a suppressor so far it hasn't screwed with my groups too badly.