First time out with used rifle.
GPR, .50 cal
Hornady .495 RB
.015-.018 Joanne pillow tic
60 grns. of 3F Swiss
50 yards, Lyman 57 peep rear sight, front blade sight.
20/80 moose milk- Ballistol/water patch lube.
Shooting off the bench with bullsbag to zero sights with new Lyman rear sight, the numbers 3 & 4 refer to 3rd and 4th sight adjustments. The two shots in the 3rd adjust we're not tight due to the set trigger getting away from me. Final adjust number 4 has 3 shots in it.
Bottom line, given the right load GPR's can be very accurate rifles. I hope the above setup helps, I last shot mz ldr competition in 1978 with a Johnathan Browning Mountain rifle. But I currently have been shooting various rifles and pistols most every weekend. Prepping like you for a club shoot re round ball. Also just purchased a .58 Cal Birmingham Parker Hale Enfield, so I've got my work cut out for me..