Baldie, thanks for the advise, could i get around the problem by shooting a lighter bullet weight? At the moment i use a Federal 95g ballistic tip but have just started home loading, if i went down to a 87g v-max or even a 75g bullet would I need less powder, thus it should all burn in barrel? I use my .243 mainly for vermin but i do want to be able to knock over a Roe if i see one, so i can not go too light. Thanks Jon