wavenall

I have just bought a Weatherby rifle chambered in 338 Win Mag with a 24 inch barrel. I am having a KDF recoil arrestor installed. Will it hurt to have the barrel cut down to keep the length at 24 inches? Please help

Roskoe

Reduction in muzzle velocity will in the neighborhood of 50 fps per inch. Probably not a huge issue, IMO. Roskoe.

wavenall

Thanks, What would your recommendation be?

stubblejumper

As barrel length is reduced velocity is also reduced but muzzle blast will increase.

Roskoe

True . . . and that KDF is going to really increase it. But, overall, when you look at the "overbore" factor, the .338 Winchester is not going to need as long of a barrel as, say, a 7 Rem Mag or .264 Winchester - even though it is burning a fairly large quantity of powder. I think that if the gun was to be used primarily in wooded areas where the shots would normally be inside of 250 yards, the shorter barrel might be a good trade-off. Roskoe.

stubblejumper

To the point where even a single shot without hearing protection could easily cause significant hearing loss.

wavenall

how much length is it going to put on the barrel?

Roskoe

I don't have a KDF right here to measure, but I think they add about 1.5 inches. The Vias is the one I recommend to customers (those that I can't talk out of the idea). They are louder than a rifle without a brake, but not as loud as a KDF. Stubblejumper is 100% right - one shot without ear protection will cause irreversable hearing loss. I would recommend trying one of the new rifle rests, like the Caldwell Lead Sled or Benchmaster, instead. They cost about the same as having a muzzle brake installed - can shoot off the bench with comfort - and you will never feel the recoil under actual hunting conditions anyway.

Or else get your gunsmith to make up a knurled thread protecter to put on for field use.

stubblejumper

You must also remember that the point of impact can be different with a muzzlebrake installed so you must still sight the rifle in without the brake if you intend to hunt without the brake.

rost495

One of the keys here is that one shot either with OR without a brake will cause hearing damage. Much the same as firing a 22 without hearing protection. So the argument is moot to me in a big way.

And on the thread protector-- not only can it change the impact from sighting in, it can severely change the barrel harmonics. What may shoot great with the brake on may suck with it off. The only way I see it is either one way or the other. I don't think you can have it both ways. You either have and use the brake for load work, zeroing and hunting OR you deal without.

Jeff