Peltor 6 Tacticals. When you get them home take them out of the frames and swap sides so that the indentation is at the bottom (the Peltor name will be upsidedown), this will give you even more stock clearance. Also take a paintpen and mark the knobs and the "off" postion so you don't forget and run the battery down. Each ear unit has separate 'AAA" batteries (2 - 4 total) and off/on volume controls so you can run on one side, then the other if you really want to stretch the usage. About the best out there.
I've used the Peltor TacticalPros for trap and hunting for the last year or so and I love those. Adjustable volume and has music too if wanted.
stokinpls, for muffs to make noise against your stock comb after mounting the gun is to have some sort of movement between the head and comb. That noise tells a feller sumthing too huh? I call mine a personal teaching aid device to keep my head still with the comb when attacking a moving target. Hap
FWIW, I went through 4 sets of the Peltors in a relatively short time. The left side stopped working on all 4 sets. Peltor did keep sending me replacements at no charge, but eventually I switched to the Remington (Model 2000?) that was recommended by someone on this site. I use them for hunting and target sports. They are also streamlined and so far no problems at all.
Peltor may have fixed this problem by now. When I bought my first set they were going for around $140.00. The same pair is about half that now for some reason. The Remington's were about $125.00 at Cabelas.
If you have a Harbor Freight outlet near you, they have a set on monoaurial (Spelling) electronic muffs that sell for about $25.00 - sometimes $10.00 on sale. They only have the one microphone and the sound goes to both ears at once. However, they cut out at about 85 dB and magnify normal sounds up to about 20 dB. I've been using one for a couple of years and am satisfied. Their ear cups are the best I've tried - bar none. Prior to getting this set, I had a $130 set of Remington electronics. The ear cups wore out in about 9 months and I've not been able to replace them. The electronics seem to be OK but are unusable without new cups.