Ok guys, Here is the deal. I have a shot out 223 Imp. I loved the gun and the round. but as with everyone I want to try something new. What I was thinking was a 6MM BR IMP shooting the 105-115gr bullets I know that I will have to open the bolt face which is not a problem. I will install a sako extractor when I do it. Now the Question is what would you guys do. I will be using a Douglas barrel, I know the guys who work there and I think that their products are very under rated. Also if I change the bolt I will have 550-600 pieces of 223IMP brass in load boxes most are loaded. I am just looking for the other options that I have not thougth of or heard of. Also what length and twist should I go with? Thanks