RE: Sims DeResonator
Well, I finally had a chance to try one out on my Kimber Montana .308, which has a very light, whippy barrel.
With a lot of loads, including factory 168 gr match, I've been lucky to get 2.5" groups at 200 yds. Usually I get 3". Well, with that gizmo on, I tried again last week. The 168s weren't any better, but groups shrunk a full inch with my 150 grain reloads. (1.5" 5-shot groups at 200 yds, with a hunting rifle? "Ugly" or not, I can live with that!)