286 AFrame
61g 54.4k 2453fps
62g 56.8k 2488fps
63g 59.3k 2523fps
64g 62k 2558fps
64.7g 64k 2583fps
which is better? I don't know, I was a bit surprised that the a-frame doesn't produce more velocity at a given pressure, for fun I just ran Nosler Partition at 64.7g and QL generated 56.3k psi pressure and 2543fps, using your parameters, 5570 joules, 4100ft-lbs. SAAMI spec load. my go to 286g is the Partition running at 2500 fps out of a 20.5" (520mm) barrel. 3/4" groups with that load
Thanks for the info MtnT,
That is surprising. A Frames and Nosler partitions are are very similar in consruction and lenght so I am quite curious as to why A Frames would produce so much more pressure than Partitions?
