Quick question regarding muzzle brakes ...

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Tikka223

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How specific does the bore diameter need to be on a muzzle brake? Ex: would a .308 muzzle brake would on a .223 barrel, or a 6.5 barrel? Or would accuracy and effectiveness suffer? Obviously the inverse would be a disaster.
 
Correct me if I’m wrong but I think the tikka 308 brake is the same one they use on their 6.5’s. Or just buy a heathen in whatever caliber your looking for and you won’t Ever have to worry about it.
 
Tikka223 said:
How specific does the bore diameter need to be on a muzzle brake? Ex: would a .308 muzzle brake would on a .223 barrel, or a 6.5 barrel? Or would accuracy and effectiveness suffer? Obviously the inverse would be a disaster.
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As has already been said, a "proper" diameter vs a larger one has little effect on the overall results of recoil reduction. Design and sizing of the entire brake is more important.

The rule of thumb has been 20 thou OVER bullet diameter but I have seen some weird results where guns shot terribly until the bore was opened even larger.

I run a 30cal bore brake on my 6.5's and have zero issues with tuning or bullets hitting the brake. And this is with multiple barrels and set ups.

When viewed from the top, there is still very little gases flowing forward vs what is going sideways. That is all we are trying to do... redirect the exhaust flow from going forward... and pushing on the brake to counteract recoil.

For a 22cal, a 30cal bore is big but with something like a 223, there is so little gas to handle that it also, didn't change much. would something with a 1/4" bore reduce recoil more? I would expect so but it is going to be so little that I doubt you could tell either way.

Size of brake, design of brake, port sizing and number are important to me. I would rather have the bore big vs too small.

Jerry
 
To be specific, I’m thinking of getting a Heathen for my CTR in .308 but may rebarrel to a 6.5 Creedmoor. I’m basically wondering if a 30cal brake will do both or if I need to buy two Heathens. I don’t run a brake on my .223, recoil is négligeable.
 
Tikka223 said:
To be specific, I’m thinking of getting a Heathen for my CTR in .308 but may rebarrel to a 6.5 Creedmoor. I’m basically wondering if a 30cal brake will do both or if I need to buy two Heathens. I don’t run a brake on my .223, recoil is négligeable.
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30cal will work fine for both.
 
I think the Sako TRG muzzle brake is designed for 338 and they sell it for their 308 rifles as well. I had one on my Tik Tac 308 and it worked fine, it was a very LOUD brake I found though.
 
Alpheus said:
The reduction in effectiveness will be very small, we're talking single digit percentage here.

http://precisionrifleblog.com/2015/07/07/muzzle-brakes-recoil-results-for-6mm-6-5mm

A 308 brake on a 223 would be excessive, though.
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This link is the correct one to look at for sure where in the main body, Cal states: " I only found a 1-3% performance improvement if a brake was caliber-specific, over it just being bored to a standard 30 caliber..." Granted this was a 30-cal brake on a 6.5 mm, but the numbers remain the same for most overbored brakes. I personally run an 8 mm bore brake on my 6.5 and it works flawlessly! Am I getting 100% efficiency out of my brake? Probably not. Does it work for the shooting environment I am in? Yes, 100%! If you're going to run the 308 Heathen on your 6.5, you'll be alright.

Also, I agree with Jerry's statement that
Design and sizing of the entire brake is more important.
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I find the brake design much more important than anything else.

- Kudu
 
I currently run a Heathen 30cal brake on my 6.5CM and it works well. I don't notice any difference from my Heathen 6.5 on my other 6.5CM
The recoil pulse feels the exact same to me but thats just my 2 cents.
 
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