I have an old BRNO action. I cleaned up the outside of the action pretty good, now for the inside. Is there a type of media to stay away from? At work we have a lava rock based media. Would this be to course? Is there a betterway for a do-it-yourselfer?

Thanks
Joel

Got any buddies at an automotive machine shop? You could have 'em glass bead it for you.

quote:

have 'em glass bead it

The best way is to hand hone it with stones used by mold polishers.....wow..they work but it's a lot of time.

I have had real good results using a blasting media containing a mixture of glass beads and aluminum oxide. Leaves a really nice finish and not too aggressive. You can buy it pre-mixed at most machine shop supply houses. I get mine at Rutland Tool.

Thanks guys, I was pretty sure that the media our shop uses would be pretty aggressive. No way I could convince the upper management to change the media for a rifle action.

joel,
If you get the chance do some sandblasting outside at night with no lights.....it makes sparks just like a grinding stone......finer is better!!

MANY years ago when I worked for Armstong Rubber we cleaned aluminum tire molds by bead blasting. When I started with them they used crushed walnut shell but when we built the plant in Calif they switched to glass bead. Really does a beautiful job on aluminum tire molds. I used to bring in Colt 1911's and bead blast them and refinish at home. I got pretty good at blasting the slides on top and high polishing the flats. The walnut shell would be perfect for inside cleaning because it's not an agressive media at all. The glass beads really go thru the nozzles and hose in short order.