I think you will find your pressures are alittle on the high side. You might even be higher then the Remington Short Ultra nags, no that is not a mistake. Even so you run alot higher pressure then the .366 but it looks good. What length barrel are you running and what is it based on? Wildcats are alot of fun arn' t they, but James will never understand, will he? What is the trajectory if you sight in 2.35 inches high at 100 yards? I would be intrested in seeing this as several of my customers are into .270 diameter. You might try a different powder, IMR 7828 will jump your pressures in cold weather and I have found some other powders do just as well but do not have the variation of 7828. Sounds like a neat cartridge, and I am not a .277 fan. You might change that! By the way watch your bullet selection. Other then Barnes most .277 bullets are designed to expand at .270 Win velosity even the Weatherby is pushing bullet failure. You might think about Swift Bullets they hold up well.

Your Friend
Jud

By the way like little kids at school. YaYa My bullet hits harder then yours does!
Just kidding that .270 is an impressive round!!!