Every barrel is different and like different ammo. I have just gone through the buy and shoot to find the load mine likes. 1st tip - Go get the cheapest you can find (probably white box Winchester JHP's) and go have fun shooting for about 50-75 rounds. Clean after every 15-20 rounds through the barrel. After that first 75 rounds, then go buy about 3 boxes of ammo, in or near the grain bullet you are wanting to shoot. I shot Hornady Vmax 50gr, 55gr, and Federal 55gr. I found that my gun likes the Hornady VMax 50gr the best. With about 90 rounds through the barrel I am getting sub 1" groups at 200 yds. Have fun with it man, and don't get frustrated at first. You have to break that barrel in a little before you try and find the right load. Good Luck!