Nope, it's not. The load I use in mine (CZ 550 with 23.6 inch barrel) with 286's is 66 grains of Ramshot Big Game gets just about that, and I had it pressure-tested. Turns out its right around .30-06 factory pressures, which aren't very hot at all. Have used it in Africa at over 100 degrees Fahrenheit with no issues.
