copper fouling

littlemac · 12-23-2002, 07:02 AM

I was wondering if anyone out there knows the best way to get copper fouling out of a gun bore. I go to clean my stainless barrel and i look though the bore and i see copper on all the lands. So I run the brush through it again and it just seems to not come off.
I think this has something to do with my accuracy problems.

Rem. 222 · 12-23-2002, 07:28 AM

Mac,
Sweets or Barnes CR10 will remove the copper fouling. What kind of accuracy problems are you experiencing?

Rem. 222

littlemac · 12-23-2002, 07:56 AM

Well I have had the gun for 3 years. From the beginning I could never get the thing to shot factory loads. The pattern the factory loads was a 4 inch vertical straight line at 100 yards. So I started hand loading. I started with 115 grain ct ballistic tips. The gun still had the inconstancies that it did before so I changed the scope rings. The next pattern was about .5 inch at 100 yards. But I lost all my reloading records. So this year I started back and I could not get the gun to shot consistently. Now I have switched to 100 grain bullets because I found a twist to bullet weight chart. My gun is a tikka 25 cal with 1 in 10" twist. And according to the chart my gun can not stabilize the 115 grain bullets. The 100 grain bullets are what they recommended. So tried some this week end and the gun was a lot more consistent but it was still 2.5" group at 100. I am really not satisfied with this pattern. I contacted berretta and they told me to send the gun back and they would look at it.

Rem. 222 · 12-23-2002, 10:44 AM

Mac,
If it would shoot 1/2" groups with the 115gr BT's. I think you need to find your lost load data. The 1-10"twist should handle the 115gr pills fine. A good bedding job will help in group consistancy.
One load that shot good in my 25-06 with the 115 gr Nosler BT's, 48grs IMR4350,& CCI 200 primers.

Rem. 222

littlemac · 12-23-2002, 11:10 AM

Well I had 20 of the loads that shot that well and when I tried them out this year they were inconsistent. They did not shot that well again. It might have been luck because when I shot that load it was in a good cross wind.

TN_Hunter · 12-24-2002, 07:37 AM

Sweets 7.62 will remove copper fouling if used regularly. However, it sounds like your gun may need something stronger to begin with. Outers makes a kit for this called "foul out". It is an electro chemical process. It also sounds to me like you have a problem with the bedding or perhaps the bolt lockup on your rifle. Shot stringing is the telltale sign of these problems, that, or you are shooting it way too fast and heating the barrel up. Rifles shoudn't shoot "patterns", the should shoot groups.

sothrdnk · 12-24-2002, 07:42 AM

If you are stringing your shots I'd be willing to bet that your problems are with the stock. There is probably a spot or two on the foreend that is pressing on the barrel. Free float it or bed it.

SOTHRDNK

Country Boy · 12-28-2002, 06:24 PM

I would agree with TN Hunter and Sothrdnk about the shot stringing.

For the copper fouling. Take the barrel and action off of the stock. Warm a block of parrafin and FIRMLY press the crown of the muzzle into this block. then pour CR-10 into the chamber end until the barrel is full. set in the corner or place in a vertical gun vise for a few hours. Dump out the CR-10 and pop off the parrafin. Run some patches (or a brush) through the barrel a few times. Repeat. Repeat. Repeat.

If this does not get the fouling out... there is always dynamite...<img src=icon_smile_big.gif border=0 align=middle>

DREAM BIG, LIVE LARGE, DIE HAPPY ~Country Boy

handloader1 · 12-28-2002, 10:15 PM

Littlemac:

Follow the instructions very carefully on the bottle of Barnes CR-10 if you choose to use it. Good luck.