redz
Silver $$ Contributor
Should have stated. I bought the barrel second hand. The barrel was fine and you may not need shims. Sometimes you can mount it and the headspace is OK. But if you want the most accuracy out of the combo you need to know what the headspace is. If it is to tight you will have a hard time closing the bolt and if it is to loose you will get light strikes. I believe I had mine set at .046 or .047. It functions great now with all the ammo I have tried so far. As you can see with R50 ammo it's pretty accurate. That group is 5 rounds at 50 yds. I believe it can do better. Not sure if I can or not...LOL!