I'm glad you were able to get a helpful answer Owasso. To go a little further, none of the muzzle devices that control recoil or muzzle rise also make the rifle quieter to the shooter (except perhaps a suppressor). If the device directs the blast forward, like those linear comps, it will actually increase recoil a bit. It's just physics.
I also hunt with no ear pro (got to hear the critters)! I took an 18.5" barreled .308 AR with a comp hunting this past winter... never again! If I hunt with one of those again, it will have at least an A2 type FH, if not a linear comp like yours.
The linear comp definitely sent the blast down range away from the shooter. Before purchasing the device from Midway I read the reviews on the Midway and Brownells websites, which were overwhelmingly positive. A couple of the reviewers remarked they wished the comp was available for 308. Another similar device recommended by Glocktogo that has great reviews is the Kies Blast Master, you might check and see if they make a device that fits a 308. If you find a linear comp for your 308, let me know what you think.