My best load for my LRH is 130gr triple 7, federal primer, and the Barnes 290 gr Spitfire TMZ, It also shoots the 250 gr Shockwave with standard black sabot and 130 gr triple 7. The shockwave will group at less then 2" at a 100 yards and the Barnes at a little over 2" The shockwave will group at about 3 1/2 inches at 200 yards. and the Barnes at about 4 -5. I actually prefer the barnes even though it doesn't group as good as the shockwave . You might want to check the barrel screws if the gun was taken apart to clean it. Sometimes they can be unevenly tightened and cause the accuracy to be hindered. Make sure to work the barrel into the c clamp good when assembling it. Good luck. You have one of the best guns out there.