Vic have you shot the SA version?
I was sent the manual by accident and had a chance to shoot it alongside the SA version that another club member had at the time. Although I could have had it collected by courier for exchange I decided to keep it and was credited with the difference. The two chaps I know who bought the SA (for LSR) didn't improve their scores with it and one got shot of it and the other kept his as it's fun to shoot. I had mine for LSR and hunting, although I gave up both and sold it to help fund my Steyr Challenge purchase fund.
I also had the LP50 pistol a while back but as I wasn't shooting rapid or turning targets that went too.
My point, if I have one, is do you want it for fast fire or fun, if its the latter then crack on, if it's the former (unless you've already tried it) I wouldn't bother myself as the manual system is plenty quick enough for rapid and deliberate enough for LSR.
Just my two pennies
Steyr Challenge HFT - HW97K - BSA Mercury Challenger - Anschutz 9015 One - AA Pro Target - AA Pro Elite - ASI Paratrooper (R) - Walther LP500