Re: Suppressor for TRG in 260 Remington
I do not know if this is your only can. If it is, then go .30, but if it is not, go 6.8. One can, just one and you have extreme precision and suppression with the right maker.
Why? Well technically, the tolerances of a 6.8 can will work much better on both the .260 and the 5.56 than the .30 will. As some 6.8 cans have the same volume (or nearly the same) as the .30's, the ".30 larger can volume" argument falls on deaf ears. The volumes are nearly identical, but the bore...the bore is where the issue is. This is because the .260 has the same volume case past the neck, essentially the same powder fill and approx gas expansion as the .30. It is always better to avoid overbore if maximum suppression is to be achieved. We read a lot about multi caliber cans, and to a small extent it works fairly well. But, there is no comparison between overbore and a properly dimensioned stack. If you are concerned about using an adapter remember that a precision adapter, well designed, well executed will serve the bolt action low rate of fire shooter very well. Checking your can is a given, but after decades of doing so, I can tell a quality adapter on a bolt gun works well.
I shoot .260 both SS and sub through a 6.8 and .30 can and, whereas suppression occurs with both, the 6.8 has it beat hands down. Internal volume is approx. the same. I demand absolutely world class suppression in my .30 series. I shoot allot of it and I believe that everyone that shoots the .30s needs a top notch can. I expect nothing remarkable to happen in regard to suppression when I shoot small calibers through my .30 cans and I am never disappointed. Smaller, starting at .260 because of the nature and power of that round needs a closer bore than .30.
Mounting, here is more of an issue. If it was me, no question I would go for a re-threading on the TRG to standard pitch. If not, I would get one of these. In the can "adapters" out of the can "adapters", if its well made, the end result is the same.
http://www.trosusa.com/
Go to the bottom of the left hand column. Mark is one of the best and can make anything and probably has.
I would go single point (no QD) and enjoy top accuracy and interchangeability. No sense in buying a light can and then throwing a heavy QD on the end of a precision barrel.
"Only suppressor manufacturer I know that designs for accuracy as well as quiet." There are a good number of manufacturers that accomplish both, some IMO lighter and quieter than TBA. But at this level of performance, you have to really want to spend the $$.
Good luck.