I have had them on a Browning A-Bolts:
300 Win Mag
7 Mag
30/06
270
I have worked with a Browning Safari Grade Semi-Autos on:
7 mag
30/06
In all guns, the the loads were able to be dialed into shooting less than 1/2" groups.
They are quite impressive in accuracy to say the least.
If you even have the slightest inkling that you may want one of these Boss Systems, you will need to wear a set of electronic ear muffs when you are hunting or suffer hearing damage.
I have been using the Peltor Tac-6 since they first came out and would never go to the woods without them since my hearing is ehanaced but not so loud that it is too loud.
