bout' 700 fps and a 12# variable spring. You wont find that load in any manual. Sam used it many many years in competition and he was gracious enough to share it with me and it shoots wondefully. With the soft recoil it produces it is not hard to shoot inch or better groups within 15 yds.3.8gr for 200grs .45ACP?
That's under the min load in all the manuals I've got...they all list around 5.0gr as a starting load.
What are you getting for velocity and what lb mainspring are you using with it?
I found all plated bullets, and the SWC bullets in particular, to be amazingly inaccurate and a waste of my money. Hope yours work better.
4.1-5.0gn 231/HP38 (5.6-6.0gn for hardball)