Re: Having pressure problems with 6mm ackley
I have had a batch of H414 that had a much faster burn rate than the reloading manual suggested. I loaded a middle of the road charge in the manual for a 220 swift and my velocity was about 250 fps too high and I had to beat open the bolt. I have had other batches of H414 that were dead on what the manual said. Did you chronograph your loads to see if the velocities are what you're expecting?