Why don't you measure the actual OAL of that bullet in your rifle? Simplyclose the bolt, insert a cleaning rod down the muzzle until it bottoms out on the bolt face. Put a mark on the rod. Open the bolt or remove it. Put the bullet you wish to load in the chamber and push it in with a pencil until it is against the lands, and hold it there. re-insert the rod intil it touches the tip of the bullet, mark rod again. The difference between the marks on the rod is the max oal for your gun with that bullet . You may not be able to load a bullet this long as if there is a lot of freebore the loaded cartridge may not work through the magazine.In such cases come back 20-30 thou off the lands.