I don't shoot the improved version but am a big fan of the standard version and have worked up loads for a fair number of the standard 06 and the weatherby, If you are looking to get max velocity out of That bullet weight or heavier look to powders that are slower RE 22, my rifle with 24 in tube exceeds 3400 fps with both the 110 gr accubond and the 115 btsx to the same point of impact with a charge 60 grs of RE 25, there was a posting a short while back the poster was getting over 3500 fps with the 110 gr Nosler and RE 17 out of the standard 06 but didn't say what the charge was, I'd try that powder myself if it was available.