Heavy LCR Grips to Help Prevent Crimp Jump?

Some competitors use stick on wheel weights to prevent muzzle jump. Maybe you could try that?

Money considerations aside, what you are driving at is what the new Colt Cobra and Kimber revolvers deliver built in, more weight.

dubious said:

What are the largest, heaviest grips available for the LCR? I hope to improve reliability for Crimp Jump (ammo falling apart) by adding as much weight as possible to my 9mm LCR. This is a range gun only. I really wanted a 9mm SP-101, but they are unobtainable. I have a J-Frame with 10 oz Pachmayr Decelerator grips and its like shooting a full size revolver!

I understand that you need to test your ammo and crimp. I just want to get bigger grips to improve reliability across the board with random store bought ammo.

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Have you had crimp jump with the factory grips?

gun_with_a_view said:

Money considerations aside, what you are driving at is what the new Colt Cobra and Kimber revolvers deliver built in, more weight.

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+1

OP, I would seriously consider one of those options if you want to avoid a blown crimp.

What is this "...range gun only..." of which you speak? It's like you're speaking English, but the words are coming out as gibberish.

dubious said:

What are the largest, heaviest grips available for the LCR? I hope to improve reliability for Crimp Jump (ammo falling apart) by adding as much weight as possible to my 9mm LCR. This is a range gun only. I really wanted a 9mm SP-101, but they are unobtainable. I have a J-Frame with 10 oz Pachmayr Decelerator grips and its like shooting a full size revolver!

I understand that you need to test your ammo and crimp. I just want to get bigger grips to improve reliability across the board with random store bought ammo.

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Dub, it seems to me that you've summed up your problem in your last sentence which leads me to believe that you may have heard something about factory ammo that isn't true. I've never heard of anyone testing factory ammo for crimp jump? Perhaps the person that you heard this from was a handloader and was speaking specifically about hand loaded ammo because that's the only way it makes sense. If you're shooting random factory ammo, you needn't worry at all about crimp jump, just go and shoot!

I've tried various factory ammo loads from cheap stuff to premium SD rounds in my 9mm lcr. I've put maybe 400 rounds through it and I have never had a bullet jump crimp enough to cause any performance issues.

I would, and often do, trust the 9mm lcr with my life. Fantastic summertime carry piece.

First time I've heard the LCR described as a range gun, but maybe if someone really likes shooting snubs, it could be a range gun.

I also didn't think the 2.5" 986 had much of a niche - but that pistol seems to be what you're looking for - a snub nosed barrel on a heavy revolver.

dubious said:

I mean to say that its not a carry gun, so I'm not concerned about having larger grips for shooting at the range.



The Ruger 9mm LCR has a bit of a reputation for bullet jump because 9mm rounds aren't crimped like revolver rounds. Appreantly the lighter loads are more reliable too. The gun is on it's way, so I haven't tried it yet. There are a number of reasons I want the biggest, heaviest grips I can find. I figure it can't hurt if it makes the gun a bit more reliable.

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Ah! I understand,...sorta. The problem with putting heavy grips on a light revolver is that it changes the whole dynamic of the gun. For example, I have a set of Bianchi Lighting grips on my S&W Model 13-3 that I tried on my S&W Model 12 Airweight (see my avatar). The grips are steel-reinforced and so heavy in relationship to the Airweight that it was almost like there was nothing forward of the grip. I immediately put to the stock grips and a T-Grip back on the Model 12.

Have you tried the grip for the Ruger 3 inch LCRx?

Elm Creek Smith said:

Have you tried the grip for the Ruger 3 inch LCRx?

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You're prophetic !

This means that Ruger is definitely going to chamber the LCRx in 9mm !!!


YES !

Adding weight to the grips won't reduce your muzzle jump, and it's not just the linear/rearward recoil which causes crimp jump. If you add weight to the grip and the muzzle rises around the grip proportionately more, it won't actually reduce your risk of jump at all. From a physics stand point, I do not think heavy grips will fix the issue.

And it indeed IS a real issue.

Personally, I would simply test which ammo does and doesn't work, then no longer buy the ones which don't work. I'm not sure I have had (don't recall having) crimp jump with any 115's of any make, but I do only buy a few brands anyway. Get to the heavies and I have had up to a full bullet pull after 2-3 shots out of the cylinder, jump on all after 1 shot.

Milt1 said:

Dub, it seems to me that you've summed up your problem in your last sentence which leads me to believe that you may have heard something about factory ammo that isn't true. I've never heard of anyone testing factory ammo for crimp jump? Perhaps the person that you heard this from was a handloader and was speaking specifically about hand loaded ammo because that's the only way it makes sense. If you're shooting random factory ammo, you needn't worry at all about crimp jump, just go and shoot!

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In my 9mm LCR, bullets pull out of the cases after three rounds when using Federal Champion 115 grain. Happens every time. No problem with Winchester White Box. YMMV.

HankR said:

In my 9mm LCR, bullets pull out of the cases after three rounds when using Federal Champion 115 grain. Happens every time. No problem with Winchester White Box. YMMV.

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Hank, that's certainly news worthy and this is what makes this site so interesting as one is always learning something new. Have you tried Remington and Winchester 9mm loads? My best friend and shooting buddy had an LCR in 9mm and he never experienced any problems. He either sold or traded his because he didn't like messing with the moon clips as I remember.

No problems with the Fiocchi or Winchester White Box 115 gr (and the limited quantities I tried). I shot some other cheap alternatives with no issues, but I don't remember which ones.

Federal Champions, if I load the cylinder, shoot and look all 4 look normal. Shoot again, all three have jumped (maybe 1/8"). Shoot again, loose powder and remaining two bullets are no longer in the cases. This is very repeatable with the Federal. Before I realized this was happening the last two rounds would usually go off, but not hit the same point of aim. Now that I know it's happening I don't shoot the last two - only shoot the Federal to show doubters.

HankR said:

In my 9mm LCR, bullets pull out of the cases after three rounds when using Federal Champion 115 grain. Happens every time. No problem with Winchester White Box. YMMV.

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I had the same happen to me with Federal's 115 gr. value box. 4 rds. and the 5th bullet and powder were loose in the chamber. After that, I did an informal test of factory and reloads. All others stayed in the case. While all pulled some, Winchester 115 gr. Silver Tips barely budged.

I'm in the camp that you gotta test the ammo to what works best for the gun. But then, I like the stock grip, even with stout loads.

The grips, large or small, don't do that. They only allow you to hold the revolver and have the thing fit your hand better so you can hang onto it. Insufficient crimp with hot loads is what causes bullets to move under recoil. Little thing called physics causes it.

Actually insufficient case neck tension and poor quality control is the real cause of bullets pulling or setting back. It is absolutely an ammo QC problem - it is NOT a gun problem. If you buy any ammo and have bullets pull or setback then simply never buy from that manufacturer again. Flyweight guns do make the problem worse but are NOT the cause an adding weight to a gun will NOT solve the problem. The ammo is the defect here. Do not expect a refund either - none of the ammo manufacturers guarantee their ammo not to pull or set back as far as I can tell. Call them and ask them - see what they say.