Picked it up Friday. It's 308 caliber and today I took it to an Indoor range and put about 30 rounds through it. after getting the peep sight set I was making about a 2 inch group at 25 yards. That's ok, but I need to go to an outdoor range next time as my glasses were fogging up and it was hard to breath in there with all the gun smoke. Anyway it looks like it's all good. You can adjust the LOP and comb height also. Shooting 147 grain 762x51.