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z375,
I have some Shaw 12 gauge rifled barrels and they all have lots of chatter roughness on the tops the lands, I suppose this is due to they way they are rifled.

I asked one of the other guys about all the roughness inside them and he advised me to use a small bore cylinder hone on an extended rod to hone out the roughness in them. I was shocked at such a suggestion, thinking that the hone would jam inside the barrel but decided to give it a try anyway, and guess what? It works like a charm to hone off the chatter marks from the tops of the lands! You only want to do it long enough to just get them smoothed up. This technique will radically reduce the barrel leading down to nothing and make the barrel much "slicker" inside.

I have built a couple of double rifled shotguns using these 12 gauge Shaw barrels and they were all loaded pretty hot with no leading problems because of the shot cup protecting the slug from and barrel rifling.

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BirdHunter,

Thank you for the input! Well, the Shaw barrels are still wrapped up in petrolatum tape and coated with a heavy marine-grade corrosion inhibitor in the bores, so its difficult to make out the roughness on the top of the lands as you have mentioned.

What was the size of the small-bore cylinder hone you'd used for your Shaw barrels and what grit size?
I do have a set of 12ga 32" Flex-Hones in 180, 400 and 800-grit, will this work to smoothen the top of the lands?

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