Re: You Gotta See This
Again the industry is trying to put a bandaid on the real source of the problem.
Yes, this may well allow the barrel vibration patterns to be tuned a bit but if the rifle makers would start building rifles with quality machining there would be no reason for such gimmicks.
Inconsistant barrel vibtation is nearly 100% caused by poor or loose barrel thread fit to the receiver.
In one of our custom rifles which are threaded with an extremely quality class 3 thread fit, the barrel still vibrates as the bullet travels down the bore but it is consistant from shot to shot.
This is the reason that most full custom rifles or rebarreled rifles that have the receiver accurized will generally shoot most bullet weights to very nearly the same point of impact at 100 to 200 yards even with the velocity change.
I once tested this in one of my 257 Allen Mag test rifles while doing velocity testing. I had 8 different loads using the same bullet, at 100 yards I shot four shots into one group and the other four into a second group.
The velocity spread of the first four shots was 185 fps and the group measured under 0.3". The second four had a velocity variation of 205 fps and this group measured just over 0.5" ctc.
Combining the entire 8 shot group, the first four shots would have landed inside the second groups outer edge so with a velocity variation of nearly 400 fps, the group size was barely over 0.5" at 100 yards CTC.
Try this test with a factory rifle and see what the results are.
Point is they want you to spend money to solve a problem that can not be solved with "add-ons". Quality machining is critical to fine consistancy and unfortunately the big rifle makers have chosen to skimp on this area in favor of mass production rifles.
IT is sad really, well, as a custom rifle builder, its good for me and my customers!!!
Allen Precision Shooting
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