Well I just modified your case size to 75.3g H2O and makes my data off
61g gets you 55.8psi, 2488fps
62g gets you 59k. 2528fps
63g gets you 62.3k 2568fps
78g h2o was the default
Again use at your own risk, just trying to help
Thanks MtnT,
Your afrikaans is not bad at all. Quickload is available in SA but expensive so I just use Gordons. I dont think Gordons is as accurate at quickload though.
Do you think Swift A frames will be a better choice, perhaps easier to get to 2500fps with less pressure.
Would you mind checking?