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Thread: Muzzle brakes!

  1. #1
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    Muzzle brakes!

    Do they affect accuracy if put on a rifle where their use could be justified? If so then by about how much normally?

  2. #2
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    "How much" can vary from almost nope to full catastrophe, depending on many factors such as additional weight at the muzzle, primary wave handling, perfection of alignement on barrel axis.

    I did met a clamshell type brake that made a good gun group from 5" to 50" at 660 yd. That 300WM gun was fitted with a heavy contour barrel.

    I remember brake adjustment cessions on Fr-F1 sniper guns which turned to nightmare.

    Beware about brake / flash hider.

    I made a brake for a vz58 (ROBC type) and have the issued one on a ak74 (actually a Polish Tantal). Both works well but both guns are intended for ipsc, not BR.

    At the time I was shooting long range, as I was no warrior carrying the gun all day long, I always prefered to add weight than install a muzzle device.

  3. #3
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    I have brakes on several rifles, IME if the brake is installed correctly they don't effect accuracy at all. they will effect point of impact.
    Brake on re-zero your scope.......good to go !!!
    btw: don't forget ear plugs

  4. #4
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    I sure set a lot of records with them, but I kind of got away from them, but 2" groups at a 1000 is no big deal...... jim

  5. #5
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    Any more info?

    Quote Originally Posted by jim1K View Post
    I sure set a lot of records with them, but I kind of got away from them, but 2" groups at a 1000 is no big deal...... jim
    Any observations on various designs? Anything special done specifically with respect to the brake or muzzle threads?

    GsT

  6. #6
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    Quote Originally Posted by jim1K View Post
    I sure set a lot of records with them, but I kind of got away from them, but 2" groups at a 1000 is no big deal...... jim
    how groups of 2 INCHES IS SHOT WITH 5 OR 10 SHOTS I NEED TO KNOW.

  7. #7
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    Quote Originally Posted by antelopedundee View Post
    Do they affect accuracy if put on a rifle where their use could be justified? If so then by about how much normally?
    Tom, IME, probably/maybe - you'll have to "re-tune" - I've had some barrels shoot better following tuner installation, but as stated, POI was different. That tells me, I probably need a different powder, or, seating depth, or combination thereof. Also, as noted above, it's gotta be "dead nutz" plum: perfect axial and radial alignment - gotta use a competent smith.

    My first brake was on a .300 WSM Hunter Class Rifle (10 lb. weight limit), done by [the late] George Myer, back when we could use a brake in NBRSA Hunter Class (from about 1999-2003): Lilja 1:17" twist barrel, STD NBRSA Hunter contour, or, max 1.25" x4" shank/cylinder, with straight taper to .750" at 26" ahead of bolt-face. That barrel proved very competitive, but, for BR work, I still didn't like the 'snap' at my wrist (bad technique I'm told)- it never hit my shoulder. For last 15 years, it's been relegated to just a huntin' barrel - exceptionally precise for that work, but limited to FB bullets of 1.10" or, less, which, for a thirty Cal., means fairly light weight.

    Once I experienced the recoil reduction, I installed brakes - mostly Harrell's - on all for the BIG BOOMER hunting rigs. IME, over the last twenty years, the cloud of dust (bi-pod from prone) is a myth/misconception - it's less than from a bare barrel.

    My latest brake was/is a Harrels, 'tuner/brake', which, on a Bartlein #4 contour, 7mm DAKOTA, Borden TimberLine action, proved the "missing link"! I was disappointed with that BBL, until, after "giving up" on tuning it any better (5/8ths" 100yd average for measly 3-shot groups), I decided to, "live with it" for an upcoming hunt, and strapped on the MagnetoSpeed bayonet to collect velocity DATA for a drop chart: the ten-shot group was under 3/8ths"! Came home, weighed the bayonet and other parts, looked on Harrell's page, and ordered the appropriate diameter & weight tuner/brake - for that BBL, the tuner worked like magic - next range session, and a little tweaking on the weights, and it has been gold ever since!

    Though I had tried several powders, perhaps, yet another would have provided the precision solution also, but, with the barke/tuner, & preferred powder I got a LOT of MV, with <.5MOA precision, and little perceived recoil. RG

    P.S. Edited: "My last tuner", to My last BRAKE!
    Last edited by R.G. Robinett; 08-15-2020 at 07:23 PM.

  8. #8
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    Quote Originally Posted by billbrawand View Post
    how groups of 2 inches is shot with 5 or 10 shots i need to know.
    at 1000 yds

  9. #9
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    Quote Originally Posted by BillBrawand View Post
    at 1000 yds
    Don't doubt Jim.

  10. #10
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    Quote Originally Posted by butch lambert View Post
    don't doubt jim.
    was at raton saw 2 inch shot at 1000 yds with 6br the next group they never found a shot once in blue moon

  11. #11
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    Quote Originally Posted by UncleB View Post
    I have brakes on several rifles, IME if the brake is installed correctly they don't effect accuracy at all. they will effect point of impact.
    Brake on re-zero your scope.......good to go !!!
    btw: don't forget ear plugs
    Isn't change in POI the same as a change in accuracy? If group size opens up then that's a precision problem, not accuracy.

  12. #12
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    Quote Originally Posted by R.G. Robinett View Post
    Tom, IME, probably/maybe - you'll have to "re-tune" - I've had some barrels shoot better following tuner installation, but as stated, POI was different. That tells me, I probably need a different powder, or, seating depth, or combination thereof. Also, as noted above, it's gotta be "dead nutz" plum: perfect axial and radial alignment - gotta use a competent smith.

    My first tuner was on a .300 WSM Hunter Class Rifle (10 lb. weight limit), done by [the late] George Myer, back when we could use a brake in NBRSA Hunter Class (from about 1999-2003): Lilja 1:17" twist barrel, STD NBRSA Hunter contour, or, max 1.25" x4" shank/cylinder, wit straight taper to .750" at 26" ahead of bolt-face. That barrel proved very competitive, but, for BR work, I still didn't like the 'snap' at my wrist (bad technique I'm told)- it never hit my shoulder. For last 15 years, it's been relegated to just a huntin' barrel - exceptionally precise for that work, but limited to FB bullets of 1.10" or, less, which, for a thirty Cal., means fairly light weight.

    Once I experienced the recoil reduction, I installed brakes - mostly Harrell's - on all for the BIG BOOMER hunting rigs. IME, over the last twenty years, the cloud of dust (bi-pod from prone) is a myth/misconception - it's less that from a bare barrel.

    My latest brake was/is a Harrels, 'tuner/brake', which, on a Bartlein #4 contour, 7mm DAKOTA, Borden TimberLine action, proved the "missing link"! I was disappointed with that BBL, until, after "giving up" on tuning it any better (5/8ths" 100yd average for measly 3-shot groups), I decided to, "live with it" for an upcoming hunt, and strapped on the MagnetoSpeed bayonet to collect velocity DATA for a drop chart: the ten-shot group was under 3/8ths"! Came home, weighed the bayonet and other parts, looked on Harrell's page, and ordered the appropriate diameter & weight tuner/brake - for that BBL, the tuner worked like magic - next range session, and a little tweaking on the weights, and i has been golded ever since!

    Though I had tried several powders, perhaps, yet another would have provided the precision solution also, but, with the barke/tuner, & preferred powder I got a LOT of MV, with <.5MOA precision, and little perceived recoil. RG
    Thanks Randy

    I was asking because someone on another message board made a blanket statement that a muzzle brake affects accuracy so never having used or owned one I came here to get the expert skinny.

    Tom

  13. #13
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    Quote Originally Posted by BillBrawand View Post
    how groups of 2 INCHES IS SHOT WITH 5 OR 10 SHOTS I NEED TO KNOW.
    2" groups were five shot groups and 4" 10 shot groups.... I used Harrells radial at 35.00 I think, if I remember right. ..... jim

  14. #14
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    Quote Originally Posted by antelopedundee View Post
    Do they affect accuracy if put on a rifle where their use could be justified? If so then by about how much normally?
    The Russian AK 74 uses a muzzle brake with upward facing slots to control climb during automatic fire mode,

    I test fired one in my former job and it's very true. Little sh*t stayed on target during sustained bursts, unlike it's predecessor, the AK 47.

    * doggie *

  15. #15
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    Quote Originally Posted by antelopedundee View Post
    Isn't change in POI the same as a change in accuracy? If group size opens up then that's a precision problem, not accuracy.
    Apparently you don't quite understand........change in POI does not mean any accuracy is lost or the group size opens.
    It means you have to re-zero your scope after a muzzle brake is installed. pretty simple really

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