I shoot both my 30 Gorilla and 30BR just at 100 yards. I have my 30 Jag 2 and now my 30Thrasher and 30BRX that I will use at 2 & 300 yards only because I can get another 150 to 200 FPS more velocity out of those cases which IMO will help me a tad more when the wind is blowing. I've had and used 1 Borden, 5 Ezell's, 4 Goodling's, 1 Schmidt, and 1 Beggs. The last one is without a doubt the biggest pain in the ass tuner that I have. Mike's tuner is the easiest to adjust and is the heaviest at 7oz. the other 4 all weight about the same a tad over 4oz. I've only used Jackie's tuner in one match, so I can't give you an honest opinion on that tuner yet. I like Jim's tuner but I prefer a tuner that extends beyond the muzzle. So flip a coin between Mike and Sid's tuner.