I shoot a tj 28 in barrel on my impact. It's similar to the lw on that rifle. The 68gr at 875 do well at 100 yards. Rugged holes groups. The wind doesn't blow them very far either. 900fps is fast as my rifle will shoot them at 150 bar. I tend to not adjust my reg. At 875 fps they where more accurate. I've shot maybe 5 tubes of them. They do pop and kill game very well. That's a fact. Hold up good past 100 yards also. Don't know if that'll help u,but it may.
My guns do that at 100. If they will not then I sell them,or change liners. This is a ten shot group will the 600mm superlite. First time shot,it was a liner test at 100 yards. I'd say it's a good one,1in22 twist.
