I've tried pull throughs and shoot throughs of various makes and guises but either the results havent been as good, or they've failed in the barrel.
Saying that, it looks like bore solvent and cold got the better of one vfg rod and it broke into 3 bits in the barrel. The VFG pull throughs all failed on me.
I might attack the barrel with a bronze brush but they are hard to find in .177 these days...
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep