just remember that stainlees is not corrosion proof,i bought a stainlees gun off gun broker that came with a gray looking bore.when cleaning i could not get a clean patch so i put up in the to see and saw specks in the bore.so out came the solvent and a brass brush,the more i scrubed the worse it looked.300 strokes of JB helped a little but the pitting can still be felt when loading.one of these days i'll try to make a slug and lapp the the bore with diamond paste......karl