now that my 97k is well and truly bedded in I decided to pellet test again to find the most efficient for the rifle.

I was expecting the lightest of the lot,jsb rs to give the highest energy but it seems that no matter what weight pellet I use(all jsb branded 4.52)they all seem to give about the same energy.

I was under the impression that springers liked light pellets so can someone tell me what is happening here?