muzzle brake hurts accuracy?

Muzzle brakes are know for changing point of impact's but accuracy???
:confused:
Check the castle nut and make sure that the set screw is in the slot & or did not come loose.
 
Muzzle breaks do not improve accuracy. The bullet is far down range by the time they reduce the recoil with the escaping gasses.

That extra weight on the barrel may affect the barrel harmonics. There could be some other effects, one MB I have is not threaded properly and is crooked. The bullet brushes against the inside, obviously affecting the trajectory. Also makes a neat ping noise.
 
Brake !

In my experience muzzle brakes do improve accuracy - not from recoil reduction but by reducing the destabilizing gas pressure at the base of the bullet as it leaves the bore.
Very noticable accuracy improvement with .22 long rifle, and shorty AR barrels.
Less noticable with larger caliber bullets in normal length barrels.
In one of my 18.5 inch M14's I saw group size shrink when I replaced the AR 15 flash hider with a PWS brake.
 
Chopper .... the accuracy change on your shorty 14 might be due mainly to the weight of the muzzle accessory, aka optimising barrelHarmonics, rather than the Brake VS flash hider part of the equation.

PS: did you test the barrel for accuracy with nothing screwed on??
enquiring minds want to know!
LAZ 1
 
Mini-14s are known to get better accuracy when a mass, any mass, including a muzzle brake, is put on the end.

But in general I think popular opinion is that the effect of a muzzle brake ranges from neutral to somewhat negative.
 
Yep

Chopper .... the accuracy change on your shorty 14 might be due mainly to the weight of the muzzle accessory, aka optimising barrelHarmonics, rather than the Brake VS flash hider part of the equation.

PS: did you test the barrel for accuracy with nothing screwed on??
enquiring minds want to know!
LAZ 1

I did - no nada on barrel , bored out ar bird cage , and pws - PWS won. I thought the no nada would win because of concentric blast gas - but less gas blast won which was surprising because of the consistency of the bullets-- (not like cast lead .22 rim fire pills.)
A stiffy barrel [cause its shorter] is less susceptible to spahgetti whip anyways -
The boss concept works well with thin barrels and an adjustable (ala boss) PWS brake may extract even more accuracy to tune whip and bullet exit optimally, however I have also noticed accuracy improvement with a brake and standard length norc barrels as well as 10 inch AR barrels. (I have a 10 inch AR that shoots half inch at 200 yds with a PWS (ZERO WIND! - [a little gust gives fliers up to 2 inches away from group] )

By the way - u r right -- testing only works with the right ammo the gun has an appetite for - Hirtenberger is not bad but not as good as -
My fave ! The old mexican match or south american match - the bad stuff with the bullets replaced with match bullets that was all the rage with ORA and DCRA a few years ago.
I've built over a dozen rifles that all loved that stuff --
Down to my last few hundred rounds of it tho -
6 bucks a box of 20 - If only -----:(

OH ! ALSO ! --No copper in the bore ! I found that a copper free tuned norc shoots under an inch and copper coated bores shoot 2 inches- JB and KG12 are my best friends --
 
Adding mass to the barrel changes harmonics and affects accuracy for better or for worse.

You can get a metal mass to clamp on to your guitar headstock, you adjust the position until you get an improvement.
With a muzzlebrake there is no adjustment. Take what you get.

A muzzlebrake also effectively changes the crown, affecting the rocket blast around the base of the bullet as it exits. For better or for worse.
 
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