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Have you ever seen this happen?

5117 Views 24 Replies 12 Participants Last post by  Smoothtrigger
I sent my Rossi RS22MW2111 in for warranty work. It gets lots of FTEs and occasional blowback. Also, the cases are all mushroomed at the base. I am guessing that this semi-auto is not going to full battery. I have attached a picture so you can see what I mean.

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The second shift did it? How about the third shift, or the weekend shift?
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I have on .17hmrs, AND YOU ARE VERY CLOSE TO AN OUT OF BATTERIE EXPLOSION.

Clean the day-ligths out of your chamber with a bronze brush and many minutes of soaking with your favorite carbon cleaner.
Something is stopping the rounds from fully chambering, and it can be a big deal with a 22WRM/17HMR because they contain over 4 times the powder load of a .22.
It could also be that your bolt is out of timing due to being dirty, or just poor engineering.
Semi auto 22WRM/17HMR's are quite difficult to build correctly.
Volquartsen and the New Savage rife have it figured it out using 2 different methodologies.

We've all heard of 10/22's blowing out there magazines with an out of batterie round.

Smooth
:eek:That makes me appreciate my single shot even more.
It's at Rossi.

I have on .17hmrs, AND YOU ARE VERY CLOSE TO AN OUT OF BATTERIE EXPLOSION.

Clean the day-ligths out of your chamber with a bronze brush and many minutes of soaking with your favorite carbon cleaner.
Something is stopping the rounds from fully chambering, and it can be a big deal with a 22WRM/17HMR because they contain over 4 times the powder load of a .22.
It could also be that your bolt is out of timing due to being dirty, or just poor engineering.
Semi auto 22WRM/17HMR's are quite difficult to build correctly.
Volquartsen and the New Savage rife have it figured it out using 2 different methodologies.

We've all heard of 10/22's blowing out there magazines with an out of batterie round.

Smooth
It is currently at Rossi in Georgia and it is clean as a whistle. Apparently, no actually reads an entire post.
To be clear, no where in your Original Post did you say anything about it being "clean as a whistle", or for that matter anything at all about cleaning.:)

Therefor I just mentioned how important it is to have a spotless chamber.

You did of course say it's currently at Rossi, which is exactly where it should be.
I hope they can figure it out before someone gets hurt.
As I also mentioned it may also have something to do with your bolt.
So time will tell.

Smooth
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It's a brand new gun. I cleaned it thoroughly after each outing (shot it twice). I appreciate that you are trying to help, but did you notice that it as at Rossi? That was in the original post. I asked if anyone had seen this phenomenon. I even said I suspected it wasn't in battery. I can't find information on the internet about this. BTW, batterie is a dance move, battery is when the bolt is locked and ready to fire.:)
"I appreciate that you are trying to help, but did you notice that it as at Rossi?"

Of course, that's why I mentioned it.
And you keep adding info that wasn't in your OP.
Like it's brand new, you only shot it twice, and cleaned it after each outing.

I will have to brush up on my mind reading.:)

And yes, I have seen this problem before, and it has been caused by either dirty chambers (apparently not your case), or poor engineering.
That poor engineering caused Remington to pull its rifles from the market, and other brands to become famous for out of battery* detonations.
In this case it certainly could be something else, which is why I stated that "time will tell."

Savage came up with an inexpensive design to cure the timing issue. I believe they Patented it.

Volquartsen did it with a super heavy Tungsten/Steel bolt (15oz's) that's the same size/dimensions as normal 10/22 bolt. That's how they solved the timing challenge.

I have no personal experience with the Rossi, so it will be interesting to see how this is resolved.

Smooth
* Good catch, thank you.
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Thanks. I'm waiting to hear what Rossi says, if anything. It arrived there on 7/14. They haven't looked at it yet. I have attached their "repair status". Meanwhile, I bought a Marlin XT-17VR that I have to pick up on Saturday.

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MNBobster, so when are you picking up the Marlin?
Saturday morning. It is at the Sportsman's Warehouse in **** Rapids, MN. I live in White Bear Lake, MN 27.5 miles away. I ordered the last available XT-17 of any model they had. Luckily, it had the heavy barrel.
Had identical cases from a Savage HMR, in my case it was excess headspace. Savage replaced the rifle.
Saturday morning. It is at the Sportsman's Warehouse in **** Rapids, MN. I live in White Bear Lake, MN 27.5 miles away. I ordered the last available XT-17 of any model they had. Luckily, it had the heavy barrel.
Update: Had to leave work early (long story there). Had time to pick up the XT-17VR, Clean it, mount a new Vortex Copperhead 4x12x44 (New from warranty return), Oil it, and put it out my wife's radar in the gun locker. Whew! I don't think I have a .17 arbor for the boresighter, but I will see tomorrow. Busy day.;)
Thanks. I'm waiting to hear what Rossi says, if anything. It arrived there on 7/14. They haven't looked at it yet. I have attached their "repair status". Meanwhile, I bought a Marlin XT-17VR that I have to pick up on Saturday.
I hope you are as happy with your XT VR as I am with mine. Good luck with the Rossi.
Question to be answered now is, what did Rossi tell you was causing the problem. I think we would all like to know.
If they ever look at it and tell me, I will let you all know.:mad:
What ammo is that your shooting? How many types did you try?
Looks like to me the rifle is out of time with the ammo or the chamber wasn't properly faced.
Sighted-in Marlin XT-17VR

I hope you are as happy with your XT VR as I am with mine. Good luck with the Rossi.
Very happy with the Marlin. Here it is being sighted in at 100 yards. Federal ammo.

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My rifle no longer appears in Rossi warranty status

Rossi's Warranty Repair Status no longer gives me status, just a blank page. I hope that means they are working on it. I did a support query. Maybe they will get back to me in a few days.
Slight doming on the face of the case head is not a huge concern, as I have seen that on every semi-automatic .22 WMR, .17 HMR, and .17 WSM I've fired, but I emphasize slight doming (I have not fired the Savage A17, with its delayed blow-back action, so I can't speak to that rifle). The pressures are on the ragged edge of what a rimfire case head can withstand in a conventional blow-back action, and the slight doming is typical, even when the rifle is fired in full battery.

Keep in mind that, in a blowback design, the bolt is not locked, and it and the extractor do not pull a case out of the chamber upon firing, as is the case with a gas operated rifle. Rather, it is the recoil impulse of the firing cartridge that pushes the case back and, in turn, the case pushes the bolt back until the case mouth clears the chamber. The extractor hooks are required for the case to then pivot and eject at the proper angle and for removing a live round from the chamber. Many semiauto match handguns don't even have extractor hooks, just a stationary ejector blade, so it is quite an ordeal to remove a live round from the chamber of one of those olympic match handguns...I tried to use one for squirrel hunting one time and could not remove the round when I elected to not take the shot. I ended up having to stick a skinny twig through the muzzle to remove the round :eek:.

But, the extent of the doming and the bulging forward of the rim on your fired cases is less common and probably a sign of a major problem. Many semiauto designs, with the Ruger 10/22 being one of the worst, allow for the hammer to fall on the back of the bolt even with the bolt out of battery by as much as a 3/8"...check your 10/22s, and you can see how far back the bolt can be retracted and still allow the hammer to fall when you pull the trigger. It's a function of how the disconnector works.

Now, even if the hammer falls with the bolt being retracted 3/8", it will usually just harmlessly hit the rear bottom of the bolt, not the end of the firing pin, and not fire a cartridge. Additionally, the extractors don't really hold the cartridge rim tightly enough against the bolt face to allow firing anyway, BUT SOMETIMES IT DOES FIRE WITH THE BOLT STILL OUT OF BATTERY, and that's when KaBooms can happen. Also be aware that, though more rare, KaBooms happen even with .22 LRs, so this is not a phenomenon limited to the .22 WMRs, 17 HMRs, etc.

This, and other quality-control issues involving the bolt of the Ruger 10/22 Magnum, prompted Ruger to discontinue that rifle, and, eventually, anyone sending their 10/22M in to Ruger for repair never got it back; instead they received a 77/22M rifle.

Probably more info than you needed. Hopefully, you get your Rossi back.

TBR
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