Thread: 7mm08 loads and a short barrel

For what its worth, GRT would suggest your somewhere around 10k psi over saami max pressure to get that velocity with the 19” barrel.

McNotty pointed out “no need for superformance” but the reality is loads doing those sorts of speeds using 2208 are without a doubt overpressure no matter which way you look at it, just because theres “no pressure signs” doesnt mean it isnt there. Theres no free lunch when it comes to gaining velocity, you either do it by raising the peak pressure, or extending the pressure curve without increasing the peak, therefore pushing the projectile for a longer duration, switching to a slower magnum powder like superformance being the latter option. It seems alot of people are quite comfortable using some tough brass and pushing things past what the manufacturer deems the safe point. Either that or they just dont realise whats going on and use the “i must just have a fast barrel” excuse

Comparing apples with apples, going to the same 10k psi over saami max with superformance would land you around 2700fps, all else being equal, or ~ 2580fps at saami limits.