I have some Rhino bullets in .375 350grain that I'm thinking of testing this fall on our moose. Since the Rhino bullets are coated with what appears to be Moly, I was wondering if there are any "precautions" that i should take. Will regular copper remover (such as Forrest Bore Foam) and solvent be enough, or do I need to use something else like JB paste? Does it require extensive brass brushing to get it out? And for a last (maybe stupid!) question, does it leave any telltale color (such as the blue from copper removers)on the patches so I can see when the barrel is clean?
Any info's appreciated!

Erik D.

Well, I am not an expert on the use of moly bullets, but I do use them in several varmint rifles.

First of all, if you are going to try a moly coated bullet be sure your gun is really clean before you start shooting them. You want to get all the copper fouling out beforehand.

Then do not be surprised if the moly coated bullets do not shoot good groups until you get some moly coating built up in the barrel. (There are products on the market to apply moly to the bore but I have not tried them.)

You really need to either shoot moly or not, switching back and forth usually leads to poor groups with either one.

In regard to cleaning I get by regularly with Butch's Bore Shine. It removes the powder and moly residue just fine.
You really do not want to remove all the moly unless you are going to stop shooting moly coated bullets.

I understand that a lot of the bench rest guys clean by using patches wet with Kroil followed by patching with either USP Paste or J-B, followed by more Kroil. I do this every so often with the guns I use moly in, and it seems like a good idea.

Moly is a good idea on some rifles but it can lead to problems. If not cleaned occasionally with the likes of J-B it can build up in the throat area and is very difficult to get out. Also, while I have not observed this, I understand that moly can also trap moisture under it and lead to rust in a bore in some conditions.

Moly is black and looks much like powder residue on the patches, only a little grayer and finer in appearance.
Again, it is not necessary to get it ALL out of a barrel, you just do not want it to build up.

Hope this helps, R F

As the man said, you have to get the copper out first.

I use Lyman moly bore cream on a patch to burnish moly into the bore of rifle.

This stuff is dirtier than moly grease. Don't wear good clothes to the range.

No fouling shots needed then.