Barrel cleaning

[SIMON-B]

I plug the end of my barrels with paper, pour petrol down them, load two 3 inch mag bb's and fire towards the cieling. When the flames are licking around it looks wild man wow just look at the flames dude..

are we there yet

 

[Gene Holmes]

The type of metal in the bore would also make a big difference.

My 525 has chrome lined barrels, as I guess do most modern guns. very easy to keep clean, but this can still rust and pit.

Older guns may be steel and therefore more susceptible to rust, pitting etc. Making cleaning/oiling even more important.