I just cleaned a New SHAW 300 HAM'R Barrel yesterday evening for the first time.
A Possum Hollow 300 HAM'R Bore Guide was used. Ordered Direct from Eric.
1.75" Cotton Patch saturated in Hoppes #9. Two through the Barrel. A couple Passes, "Chamber to Muzzle" with a Bronze Bore Brush. Remove Brush and pull the rod out for each Pass. Another Wet Patch, followed by a couple Dry Patch's.
All Three Wet patch's came out Dirty to some extent. By the second Dry Patch I was satisfied the barrel was clean enough to shoot.
I cleaned again as above every Five Shots. I plan to keep up this cleaning regiment through the first 50 rounds. Possibly Longer.
I take my Cleaning Box to the Range, and clean the gun before heading home. That way it gets done, and not put back in the safe dirty.
I was using a Spear Point 30 Cal Jag.
Stainless Steel One Piece Rod with Ball Bearing Handle.
1.75" Square Patch's from Sinclair, now Brownell's. I bought Bags of them several years ago.
30 Cal Bronze Bore Brush.
Hoppes #9 stored in a Wide Mouth small Glass Jar. The lid is perfect to dip a clean patch in. The Jar is labeled Old Smokey and originally had some sort of a Flavored Moonshine in it, I believe. Pour out the beverage, use label remover to get the paper label off, and you have a much better Hoppes #9 Container than it originally comes in.
Bob R