ssg 69 issues

I've had problems with two Steyr SSG 69 P1s. Basically I used to be able to shoot decent groups with these guns at 100m. Then almost suddenly the guns started shooting wildly. I mean I couldn't shoot any kind of group with them. Just to confirm it wasn't my shooting on the same day I used my...

hello, thankfull and grateful to be a new member. would appreciate any helpful advice. after years of reading about what to expect from my newly acquired SG 69 Pll, i thought maybe anyone with one could let me know first hand . maybe what kind of loads it prefers, etc. where to find accessories...