I put an FN 308 SCAR "factory take-off" brake on my hog. Recoil seems a little less than a 243 now. Highly recommended!

You will need a 308 sized crush washer. I had to file the washer thickness down quite a bit for proper clocking of the brake, then crushed it the rest of the way. Trial and error, suggest you buy a spare in case you need to start over.

Bought the take-off break from hi-desert dog.