Typically you should measure c to c.... . Photobucket not working right now (or its your link not working). I look forward to seeing your 5 or 10 shot group though. Whichever the case may be, sounds promising..
57 gr of 4350 and 165 SGK's go bugholes in my colt/NULA. I think somebody said if a 30-06 won't shoot 57-58 gr of 4350 and 165's it's sick or just plain stupid