i agree with Hares Ear,

the amount of lead build up shouldnt be as much as hes getting, however im sure ive heard hes shooting at the high end of fac (roughly 40 ftlb)

in contrast ive heard amazing things about the ev2 barrel (formerly known as the czech s200 barrel) infact im getting one soon to replace the straw type barrel on my s410, if it needs cleaning after every 150 shots then so be it, its probably a good thing as looking after your rifle is a necessity anyways.

anyone have experience with both barrels?

andy