When I'm at the range looking to shoot tight groups, I use it.
I believe it works......................How much ?
Certainly if you shoot quickly, I believe you get the most benefit !
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Silence is Acceptance. "To stand in silence when they should be protesting makes cowards out of men." ~ Abraham Lincoln ~ Stand Up and Be Counted !
I have an old '44 Savage 12ga break-over single shot. These straight stocks bust your shoulder from the first to the last(5). It came with a lame slip-on. I had to replace the split stock with a Boyd's and I was told about Pachmyer's. I got a Decelerator model and it took about 80% of the kick away. I mean away!! It's a slip-on and it stays put time after time. Call to explain your model of shooter & they will recommend the size of slip-on. I can't say enough about the quality and exactness of item description . Read some reviews on Pachmyer's Decelerator and see. Oh yea, I did get the barrel shortened from 30' to 22' so the kick increased dramatically....but the Decelerator is great !!
I have one on my savage 110 and it seems to work for me. I used to have to rezero my scope a bit but that doesn't seem to be an issue anymore. I also bedded and freefloated so I'm sure that has an effect as well.