FX Impact .30 barrel

It's going to depend on the barrel you get and what is done to it. I think a longer barrel that is fixed to the received (like the Boss or RAW) is going to have an advantage over a barrel that floats on o rings. Also, check out the results from the Phoenix benchrest results for 100M. Not one Impact there since last EBR

http://www.phoenixairgun.net/copy-of-br-6-16