Fiftydriver
Official LRH Sponsor
Roy,
This is a simple job to get the vertical ports where they need to be.
I have done a little experimenting with this as well. What I did was I had a customer that had me build him a 375 RUM and he gave me the specs for the muzzle threads he wanted machined onto the muzzle as he was going to use a brake he was getting from a friend for the rifle which was a Vias style brake.
Well, I always bench test my rifles and as the threads were the same 3/4x28 tpi as the holland 3/4" brake I screwed one on for range testing the rifle. As this brake was an instock brake and would be fitted to another customers rifle down the road sometime I did not index the brake at all. I would say the brake was positioned so the top port holes were at a 10:00 position, no where near indexed properly.
Basically I just wanted to avoid getting the hell kicked out of me as my customer wanted me to develop a full tilt load using a 300 gr bullet.
The only thing I noticed on the range with the rifle having the brake out of index was that the rifle did jump slightly to the right as the vertical ports were on the left side of TDC.
Not dramatic but it was noticable. Accuracy averged .488" ctc for three, three shot groups with a 300 gr Nosler loaded to 2880 fps.
Again, while this may have an effect on rifle movement we need to realize that once the rifle is effected by the muzzle brake, the bullet is down range. Again if the bore hole is true to axis this is not a problem as far as accuracy goes.
Looks like HELL but I have not found it to effect accuracy at all.
That said, again, it is an easy process to index one of these brakes perfectly so do not be concerned about that.
Kirby Allen(50)
This is a simple job to get the vertical ports where they need to be.
I have done a little experimenting with this as well. What I did was I had a customer that had me build him a 375 RUM and he gave me the specs for the muzzle threads he wanted machined onto the muzzle as he was going to use a brake he was getting from a friend for the rifle which was a Vias style brake.
Well, I always bench test my rifles and as the threads were the same 3/4x28 tpi as the holland 3/4" brake I screwed one on for range testing the rifle. As this brake was an instock brake and would be fitted to another customers rifle down the road sometime I did not index the brake at all. I would say the brake was positioned so the top port holes were at a 10:00 position, no where near indexed properly.
Basically I just wanted to avoid getting the hell kicked out of me as my customer wanted me to develop a full tilt load using a 300 gr bullet.
The only thing I noticed on the range with the rifle having the brake out of index was that the rifle did jump slightly to the right as the vertical ports were on the left side of TDC.
Not dramatic but it was noticable. Accuracy averged .488" ctc for three, three shot groups with a 300 gr Nosler loaded to 2880 fps.
Again, while this may have an effect on rifle movement we need to realize that once the rifle is effected by the muzzle brake, the bullet is down range. Again if the bore hole is true to axis this is not a problem as far as accuracy goes.
Looks like HELL but I have not found it to effect accuracy at all.
That said, again, it is an easy process to index one of these brakes perfectly so do not be concerned about that.
Kirby Allen(50)