What does kroil do for you when cleaning a rifle? What's the best way to use it and what does it accomplish? Thanks for the feedback.

I use it sometimes to clean the carbon out of the bore..I also like it to coat the bore after cleaning..but it doesn't take much a light coat will do...

I mix it with Shooters Choice about a 50/50 mix.

Strictly a penetrating oil and helpful for floating off lead or copper fouling. Not a lubricant at all. If one is in the black powder circle, do not leave ANY in the bore before firing off a set. The resulting products (leading etc) is a bear to remove.

Works well. My wife cannot stand the smell and will not enter the room if I'm using kroil. Never knows if I'm working on a new rifle.

Best,

GWB

Good camouflage there, GW. I use Kroil to help remove lead from handgun barrels. It seems to get under the lead and make it easy to brush out. I know the OP asked about Kroil in rifles, but I just added this.

I've used Kroil for years and have been pleased with the product. Like a previous poster, I have mixed it 50/50 with Shooters Choice with good results. I even like the smell.

From Berger:

Q: If I use Moly Coated bullets how should I clean my barrel?
A: The following is one way to clean when using Moly Coated bullets. It is not likely the only way you can clean if you are using Moly Coated bullets.

1. Push one patch wet with Kroil Oil through the barrel
2. Repeat step 1.
3. Push one dry patch through the barrel.
4. Repeat step 3.
5. Push one patch wet with Butch's Bore Shine through the barrel.
6. Repeat step 5.
7. Let the barrel soak for 5 to 10 minutes.
8. Push one dry patch through the barrel.
9. Repeat step 8.
10. Using short strokes back and forth push one patch wet with USP or JB Bore Paste through the barrel.
11. Push one patch wet with Kroil through the barrel.
12. Repeat step 11 twice.
13. Push one dry patch through the barrel.
14. Repeat step 13 three times.
15. Use bore scope or visually inspect muzzle for copper fouling.
16. If copper is present repeat steps 10 through 15.
17. If you are storing the rifle push one patch wet with quality gun oil through the barrel.
back to top


Q: How do I break in a barrel using Moly Coated bullets?
A: Moly Coated bullets will not shoot consistently until a barrel is properly broken in with Moly Coated bullets. Walt Berger has found the following procedure to work best in his barrels.

For a new barrel:
1. Shoot one Moly Coated bullet then clean using the Moly Coated cleaning procedure listed above.
2. Repeat step 1 five times.
3. Shoot three Moly Coated bullets then clean using the Moly Coated cleaning procedure listed above.
4. Repeat step 3 five times.

For a broken in barrel:
1. Thoroughly clean the barrel.
2. Shoot ten Moly Coated bullets then clean using the Moly Coated cleaning procedure listed above.

Your barrel is now ready to shoot Moly Coated bullets.

I acquired a 98 mauser that had a some what crusty looking barrel. It shot respectable but looked pitted and rough. I swabbed it with kroil and let it sit a couple of days brushed it out swabbed it again repeating for a week or two. It now looks much much better. You really have to look at the grooves at just the right angle to a bright light to see any roughness at all and the bore is actually bright and shinny. It shoot rings around my friends various surplus rifles. I was originally thinking rebarrel but not anymore.

I use kroil and mix it with job bore paste to clean stubborn carbon or smooth out a new factory barrel.

I use it to clean my rim-fires

I use Kroil to clean gun parts sometimes.

I use Kroil for a inside, outside the barrel cleaning solvent; everything but cutting copper.

It knocks lead's dick in the dirt.

From 16bore:

"A: Moly Coated bullets will not shoot consistently until a barrel is properly broken in with Moly Coated bullets. Walt Berger has found the following procedure to work best in his barrels."

I find this to be an interesting statement as I have two different rifles that shot <.75MOA with the first moly loads fired through them.

Yep, and all the wax/lube schit.
I don't get any barrel lead for the most part, but any on a port or cylinder face is toast.

I wipe down the works with it and toss 'em in a SackUp.

We use a lot of its variant Silikroil at work. Excellent at breaking free rusted stuff. Never tried it for guns because of the added silicone.

Kroil works well getting the plastic fouling from my choke tubes and shotgun barrels. Also cleans off the carbon pretty quick.

Creepy stuff that's for sure.

Mine always start a little wide, but I haven't cleaned anything in awhile. That quote is from Walt....

Kinda sux

All of my rifles shoot a tiny bullet diameter hole with the first moly load fired