Originally Posted by
skeeter 7MM
Hoppes is alright for powder, lead fouling but too weak for copper you should use a dedicated copper solvent as well Cr10, Sweets, wipe out, etc). I don't use rem oil but it is fine for inside and outside. Just remember to run a dry patch down your bore before firing to ensure no excess pressure results from oil in the bore. Yes the bore should be oiled for storage!
I've also seen a guy at the range who's bore was so wet with oil and shot without at least running a patch or two down the bore first. after about three shots I notice him mumbling and all upset about the barrel of his gun, hydraulic denting ruined his barrel on a Weatherby MK V, the bad part is that it was 4" back from the muzzle so either he had to have the barrel replaced or he ended up with a carbine 270Weatherby Mag.