22 rimfire and leading


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Iron Sight
July 17, 2009, 07:49 PM
Why do I/we not hear about problems related to 22 rimfire and excess barrel lead deposits.

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Mags
July 17, 2009, 07:55 PM
Because it doesn't happen.

243winxb
July 17, 2009, 08:00 PM
They do and can lead. Not all lubes between brands are compatible. You should clean your 22lr barrel before switching ammo. Plus bad ammo leaded my S&W M17.

jcwit
July 17, 2009, 08:04 PM
Well making a blanket statement that it doesn't happen is definitely wrong. I have a S&W 22A that had extremally bad leading problems till I had a few thousand rounds thru it. It finally stopped, I surmised it was from polishing the barrel, but have no scientific knowledge for it stopping. It just doesn't anymore.
No it wasn't the type of ammo I was using as many, many different brands and types were used to get to the 1,000 plus rounds.

Also, thanks very much for your service, a vet. here.

LRaccuracy
July 17, 2009, 09:29 PM
jcwit,

I did see some .22 LR rounds that POLISH the barrel for guns that lead excessively. I think they are used for other things too.

I believe you buy a set of 5 or 6 rounds with different grit impregnated into each round. I guess you fire them from the heavier grit to the lighter grit.

jcwit
July 17, 2009, 09:43 PM
Ya I know all about those, some call them fire lapping I believe. As I said I no longer have the problem, but did while the pistol was still fairly new.

Point being tho is that .22 rimfire barrels can and do lead in some cases.

Mags
July 17, 2009, 09:47 PM
Well making a blanket statement that it doesn't happen is definitely wrong
Ok it hasn't happened to me. And to satisfy the critics I wll add "yet"

Deltaboy
July 17, 2009, 09:52 PM
Just clean them with JB Bore Cleaner and a brass brush.

Roccobro
July 17, 2009, 10:22 PM
Remmy Thunderbolts were ATROCIOUS at leading in my Walther P22. So bad that after two mags I had lead slag hanging out of the bore!

That was 3 years ago and nobody yet wants the other 470+ rounds I refuse to shoot.

Justin

22-rimfire
July 17, 2009, 11:07 PM
I have not had significant leading problems shooting 22LR. I go for years without cleaning the rifle. Never a problem. The bullet lube generally takes care of leading issues.

That is not to say it does not happen; just I have not had the problem.

arcticap
July 17, 2009, 11:57 PM
Some semi-auto target pistols will shoot bullets that keyhole once they accumulate too much lead in the barrel.

fireman 9731
July 18, 2009, 01:03 AM
I have a Rohm G23 pistol that had the worst leading I have ever seen when I bought it. Strangely enough though, I have put over 200 rounds through it so far without one bit of leading... I blame crappy ammo.

LRaccuracy
July 18, 2009, 08:22 AM
jcwit,

Yep, you've got it, they are fire lapping. I never really had a problem with leading in a standard bolt .22 or even a semi-auto, just full auto rifles. But then running a .22 on full auto pushes lead into the sound suppressor and that is hard to clean too.

1858rem
July 18, 2009, 08:35 AM
full auto would get hot also, i think if it got near 400-500 the lead wouldnt melt, but get a lot softer and lead badly, i dont know if you can even get a 22 that hot though

Bill B.
July 18, 2009, 07:48 PM
22 rimfire and leading

In over 45 years of shooting .22's I have only saw one leaded up and it was a Ruger MK II I purchased used at a gunshow. I got enough lead from the bore I would guess to make at least 1 .22 LR bullet. After I got it cleaned up I never had any lead build up in it again. I have often wondered what .22 ammo was shot in that pistol to cause that condition. I have seen Remington Thunderbolts blamed for this on Rimfirecentral. I have never shot any of this .22 ammo so I do not know if its a valid claim.

jcwit
July 18, 2009, 07:57 PM
My S&W 22A still has machening marks you can see in the barrel, but no longer leads and is accurate enough to hit golf balls at 70 yds using a pistol rest. At this point I'm not going to mess with anything with this kind of accuracy and no leading.

DMK
July 18, 2009, 08:51 PM
In over 45 years of shooting .22's I have only saw one leaded up and it was a Ruger MK II I purchased used at a gunshow. I got enough lead from the bore I would guess to make at least 1 .22 LR bullet. After I got it cleaned up I never had any lead build up in it again. I have often wondered what .22 ammo was shot in that pistol to cause that condition. I have seen Remington Thunderbolts blamed for this on Rimfirecentral. I have never shot any of this .22 ammo so I do not know if its a valid claim.

I have a Ruger 22/45 on my bench right now that has a bore so leaded up my cleaning rod won't fit through it. I have to use a 17cal cleaning rod to push a patch down it. I believe this gun did just fire off a brick or two of Remington Thunderbolts (it's a family member's gun). The weird thing is it is only badly leaded near the muzzle.

Anybody have any good remedy's for this? I'm soaking it with Shooter's Choice lead remover and crossing my fingers.

Bill B.
July 18, 2009, 10:44 PM
Anybody have any good remedy's for this? I'm soaking it with Shooter's Choice lead remover and crossing my fingers.

I got mine out of that MKII with Hoppe's & real tight jags with patches. Finished up with Hoppe's and a brass brush and more jag's & patches. It actually came out in strips and I am sure if they were all put back together it would have equaled a .22 bullet. I wondered if I had bought a Ruger with a bad bore but after I got it cleaned up it shot great and never happened again. I would say I put at least 4000 rounds down the tube before it got traded on another MKII.

arcticap
July 19, 2009, 10:51 PM
Anybody have any good remedy's for this? I'm soaking it with Shooter's Choice lead remover and crossing my fingers.

You can buy a wooden dowel just under bore size at the hardware store or Walmart for about $1.
Then cut it into shorter sections to use as stiff ramrods. Use a mallet or hammer to tap it through the bore. Hold the rod with a loose fist, holding it just enough to guide it, but don't bear down and try to push it in with your hand or bear down on it or you'll risk getting a puncture wound if it breaks.
The wooden dowel won't damage the bore, and just rap it hard enough to move it through a little at a time to not break it off. Just keep hitting it straight.
Don't even use a patch at first, just clean it out gradually using the dowel like a jackhammer.

1858rem
July 19, 2009, 11:09 PM
leading at the muzzle is a sign of not enough lube.
maybe buy a bottle of rooster jacket and dip each bullet tip in it and let dry overnight, or mix in good ammo with the thunderbolts to help keep it cleaner... dunno if that really works though

52grain
July 19, 2009, 11:14 PM
Newbie question here, but what exactly is barrel leading?

Roccobro
July 20, 2009, 02:25 PM
Or just throw away and NEVER use Thunderbolts again. Been working for me. :)

Justin

7X57chilmau
July 20, 2009, 02:47 PM
klineia,

Barrel leading is when lead transferrs from the bullet to stick to the inside of the barrel. When enough lead has built up, accuracy can suffer. Leading commonly results from using the wrong lead alloy for the velocity achieved, rough bore finish, too small a bullet for the bore (gas cutting), poor or incorrect lube, etc, etc, etc.

J

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