Brake on Rem Sendro 300 RUM

papaw al

I want to put a muzzle break on my Rem.sendro 300 RUM.I was advised by the smitty that it will not line up perfectly on the barell because of the way Rem makes their barells.It will be a little high on one side and a little low on the other when you run your hand down the barell.Will anyone who has a sendro that has been braked,please advise.Thanks. [?] Papaw Al

JustC

as long as the gunsmith "correctly" indexes the barrel in the lathe,..the brake will be aligned. The barrel is round,..and so is the brake,..if the machinist has the right tools,..it's a no brainer.

Go with the Vais break and have the finished barrel bead blasted,..you won't be able to tell where the barrel stops and the break starts,..they look like they came that way from the factory,..oh yeah,..and they WORK!!

why chase the game when the bullet can get em from here?....
Got Balistics?

Iroquois Scout

If this is in fact the case, have your smith turn an arbor that fits the action snugly and drill it with a center drill so that the whole barrled action can be placed on the lathe between centers. Have him turn a short section of the barrel where the thread will go. This will true this section with the bore. While he has the barrled action in the lathe have him cut the threads for the break. He should have thought of this him self. If he can't do it I would find another smith.

aglore

Just send it to Answer Systems and let the real experts do it for you. Where did your gunsmith learn his trade?

AlleninAlaska
Delta Firearms & Supplies
http://canadianfirearmsexchange.com

aglore@gci.net

nononsense

Maybe I'm reading this wrong, but I don't think so.

papaw al's gunsmith is saying that the OUTSIDE of the Sendero barrel is not concentric with the bore. In other words it is just plain off center from the bore line, so that when he does turn the tenon to be threaded for the brake, on center with the bore line, the outside of the brake obviously will not line up with the outside of the OUT OF CONCENTRIC barrel.

You all are jumping all over the gunsmith like he's an idiot when what he is saying is true of many of the mass produced barrels. The outside of the barrel is not concentric with the bore line. Therefore, the O.D. of the brake will not line up with the O.D. of the barrel when the tenon for threading is turned concentric with the bore line.

In essence, a brake is not advisable for use on a factory barrel if the owner requires it to be fitted absolutely flush with outside of the barrel. Other styles of brakes would have to be considered where the O.D.'s don't have to match up precisely. Yes, you could re-contour the entire barrel for a flush fit, but now you've really thrown more money away than a factory barrel could ever be worth. You are better off buying a new, custom barrel and having the gunsmith do all of the fitting and turning from the start, with a barrel that is worth putting that much money into.

Best.

papaw al

Thanks for the replies.Nononsense has it exactly as my smith said.He also advised the remington barrels are,in his words,the toughest to fit a brake on.

aglore

This is a picture of a Remington factory installed muzzle brake. If Remington is doing something that won't allow a muzzle brake to be installed properly, somebody better tell Remington.

AlleninAlaska
Delta Firearms & Supplies
http://canadianfirearmsexchange.com

aglore@gci.net

nononsense

That's very nice that Remington can get a muzzle brake on at their own factory where they can turn the whole barrel to match before they install it on a receiver. That's the way it's supposed to be done. One instance does not make or prove the point that Remington produces concentric barrels. It is the exception to the norm. In point of fact, they do not produce barrels that are consistantly concentric to the bore at all. Pull several hundred barrels and put them on a lathe between centers and you can see for yourself.

The point of the question was about the lack of concentricity of the O.D. of the barrel with the bore line and getting a brake to line up concentrically with both the O.D and the bore. As stated, a brake can be put on correctly and in order to get the O.D. of the barrel to be flush with the brake, the O.D. would have to be turned, filed or sanded, to achieve this. This is not magical or hard to accomplish but it is a terrific waste of money considering that we are talking about a factory barrel that initially cost all of $7.50 to produce.

An answer to this problem was stated, to put on a brake that did not require a flush fit. The best but more costly solution is to get a custom barrel with a custom brake installed for a perfect match.

Another method used to achieve a muzzle brake on the Sendero SF is to relieve a cylindrical area inside the muzzle/crown of the barrel as an expansion chamber and drill/mill a hole pattern into this chamber. You have to open the muzzle slightly (+0.015" min.) as is recommended for add on brakes as well. The only caution is to stay away from the fluted area of the barrel with the expansion chamber and to cut the back of the expansion chamber perpendicular to the bore since this will become the crown.

Best.