Ok So I got a few buddies that are into F-class shooting and do it once or twice a month here in the spring summer and fall. So I went and watched. Wow looks like a bunch of fun. Now I need a rifle. I have on hand a big hefty 308 built on a 1917 Enfield or P17 action. The scope is a Bushnell Elite 4200 6-24x40mm. Not the best 1000 yard scope but it will work my buddies have the nice fancy high dollar Nightforce scopes in 12-42 but they all say they keep it at about 24 or 25x max so the heat doesn't bother it as much. So I have a rifle and a scope. Now I need an extra 20moa of elevation. That is a problem as one of the mounts is custom made for my rifle. I don't have the funds for the custom 20moa bases and rings. I was surfing the web looking for different things. I started out with buying a billet of 1913 rail and having my gunsmith cut it down to length and making it work. Still $50 for the stock and $300 for the labor. Still a no go, So I look some more and more then it hit me. Burris Signature rings have plastic inserts in them to "Protect your scope" but Burris also makes a kit with offset inserts. I can get 20moa or 30moa out of this set up with no lapping or turning of the rings. Once I get the rings and offset kit I will take pictures of the stuff and the process of mounting of the rings and basses then scope. Once I get it all put together I then have to start working up a load. I have some 175gr Sierra's but I need more a whole lot more. I think I am going to use VV N550. I am also going to switch to Lapua or norma cases. Might even try some berger bullets.