Ive got to get this on video. So I had a stash of 29gr .30 cal griffin ldc slugs laying around. And let me tell you lol 35” barrel, 155 bar and a big plenum is ALOT of fun inside 60 yards. At 1290 fps not even trying. About 3/4 at 50 yards good enough to play. When these things smack a bird parts fly lol. It is loud from the sonic crack but what fun!!! At 10 yards they dont exit a full soda can. Anyone with a 30 try them! Would also be cool tuned down to 950fps give or take. Shot count would be nothing short of awesome.