Iver Johnson TP22 Problem

K

kilogulf59

New member
Greetings,

I have an old IJ TP22 that I purchased new well over twenty years ago. It always worked great with hyper-velocity ammunition and CCI Mini-mags. Anything else was hit or miss.

Last Sunday I was shooting the pistol and noticed it was starting to jam increasingly. I tossed in some Velociters I had and they helped a bit however the problem still exists.

A cursory glance indicated that the hammer is not far enough back so, as the slide move reward, it drags on the hammer face thus causing the jam.

Obviously, I am no gunsmith, nonetheless, could this be possible?

If so, how can I correct the problem?

Is there anything else I should check?

I realize it is an inexpensive piece and I probably should simple toss it, all the same, I do like it and it used to be fun to shoot.

Any assistance would be greatly appreciated.
 
Possibly the sear is shot.

The IJ has a "sear" that's actually more of a flat spring, and these tend to wear.

If the hammer isn't coming back far enough, it could also be a problem with the hammer, mainspring, mainspring guide or the magazine catch, which is the mainspring's seat.

Without actually being able to see the gun, I can't be more exact, but here's an exploded view of the IJ. Possible this will allow you to spot the problem:
http://www.e-gunparts.com/productschem.asp?chrMasterModel=0770zTP22


You can also buy parts from:
http://www.gun-parts.com/iverjohnson/
 
The slide pushes the hammer back, and then rides over it. This is normal. I would suggest a thorough cleaning and lubrication of your gun.
Bill
 
I have a IJ PT 22 with a broken frame got it new in the late 80's . I mostly shot Rem. yellow jackets this seemed to be the only ammo it would shoot reliably.
kilogolf, if you are interested I'll sell it for parts. I had put about 1000 rnds through before the frame cracked by then Iver Johnson was no more .
 
Thanks Guys,

The pistol was clean from the get-go; however, I am going over it again and see what happens. This time I will be a bit more observant.

Oh, for the record, the pistol is stock; I never replaced the recoil spring.

I like the darn thing nevertheless; I might sell it when the problem is corrected or if the purchaser was aware of the situation. I guess one gets what one pays for?

Shame though, it is a nice design however the materials could be of higher quality.

It was very reliable with Remington Vipers and CCI Stingers. Years later, I got a great deal on a .25 caliber Beretta 950 and, as the .25 is more reliable than the .22?s are, I bought it and still carry it occasionally.

I am not sure, at this time, how much I want to mess with it. The TP22?s are a pain to disassemble/assemble, especially without detailed instructions. If the problem is not readily apparent, I may retire it to the bowels of the safe?
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
Well, I finally got around to it.

Having field stripped and removed the grips, everything looked fine. Nothing bent, missing or out of place; so far, so good.

It really was not that dirty at all but was a little light on lube. I wiped the old girl down and lubed it with some gun oil and grease where appropriate.

Then I fired some sixty-odd rounds of “el cheapo” ammo (all I had at the time) through it. The results were good; several FTFs but on the second strike BOOM. This, I am sure, is the ammo as it does this with my Ruger and H&R.

There were no failures to eject or jams. However, when I would charge the piece several times the new cartridge would hold the slide back out of battery just a bit, no more than an eighth of an inch. Slight thumb pressure on the slide and it was in. A weak recoil spring, I am certain as this pistol would get at least one short cycle per magazine when using the cheap stuff and it easily cycles it now.

Very soon, I will get a new recoil spring and some good ammo and run it through its paces.

Anyone know which .22 brands have softer or harder rims? I recall having excellent results using Remington Viper hyper-velocity fodder; maybe I will go back to that.

Thanks people, your advice, and ideas are welcomed by me.
 
try replacing the recoil and mag springs I always shot CCI mini mags in mine . It was a great pistol right up to day it was stolen.
 
Thanks for the ingo...I'll do that.

BTW...sorry for the multiple posts, I didn't realize it happened that way. I got a notice saying the forum was down as I tried to post.
 
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