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RAR WMR Minimal Crown, Not Very Accurate

This is a discussion on RAR WMR Minimal Crown, Not Very Accurate within the Ruger Bolt Action forums, part of the Rifle & Shotgun Forum category; I bought a threaded Ruger American Rimfire in 22 WMR a while back, and recently got a chance to shoot it. I cleaned the rifle, ...


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Old May 14th, 2017, 07:53 AM   #1
 
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RAR WMR Minimal Crown, Not Very Accurate

I bought a threaded Ruger American Rimfire in 22 WMR a while back, and recently got a chance to shoot it. I cleaned the rifle, removed the trigger return spring, mounted Weaver scope bases, cleaned and loctited the base screws, and mounted a Mueller 4.5~14x40AO scope. I tried 11 different 22 WMR loads at 50 yards, and none were spectacular. Some grouped 6". Most were in the 3"-4" range. Only one brand had what I would call acceptable accuracy. Comparing that to all the other Ruger rimfire rifles I own, I was disappointed. I have been trying to find an answer, and took a look at the crown, or lack of a crown. You cant see any crown with the naked eye, and only after using the magnifying glass app on my phone, could I actually see that there was just a bit of a crown. Here are two pictures. The first pic is of a Ruger factory threaded 10/22 Takedown barrel that shoots very well. The second pic is of the Ruger American Rimfire WMR barrel, and its crown. What do you think? Should this rifle go back to Ruger for evaluation? I'm not at all happy with the accuracy, so its probably going back. I like everything else about this rifle, but if it misses everything its pointed at, its of no use to me.






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Old May 14th, 2017, 12:08 PM   #2
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The crown looks OK to me .... as long as it is uniform, the shape or angle is not a factor. Crowns rarely affect groups more than an inch or so at 50 yards unless the rifle is a super fast 22-250 or 220 Swift and even then, not 3~4" at 50 yards.

Without examining the rifle myself, I couldn't say for sure but I'll bet the bore and/or rifling was not cut uniform or the chamber was reamed off center. This will send an unbalanced bullet down range that will literally fly like a whiffle ball. In other words, I think you got a bum barrel.

The other remote possibility is the stock-to-action fit. This could allow barrel harmonics to spread groups. Usually this doesn't spread groups more than an inch or so at 50 yards .... not 3~4" and certainly not 6".

I think it's time for a trip back to the mother ship for a new barrel.
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Old May 14th, 2017, 03:29 PM   #3
 
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Thanks Iowegan
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Old May 14th, 2017, 04:28 PM   #4
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weblance, You're welcome and I wish I had better news for you. In the mid-70's, I bought a brand new Winchester Model 9422M (22 Mag). These rifles had a good reputation for shooting straight but mine was an exception. At first I thought it was the iron sights so I scoped it. I still couldn't get a group under 4" at 50 yards so I tried CCI and Winchester ammo (that's all there was back then). Again, no luck so I ordered a new barrel from Winchester and replaced the original factory barrel. What a world of difference!!!! The new barrel would shoot 1" groups at 100 yards all day long. I examined the old barrel and never did find anything that would cause such a problem ... likely a variance in rifling depth. BTW, I still have that old Winchester 9422M and it is still a tack driver. I wish I would have kept track of the number of prairie dogs this gun has killed .... it has to be a thousand or more.

Here it is with a 6x Pentax scope:

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Old May 14th, 2017, 07:49 PM   #5
 
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Thats a beautiful rifle. The best thing about Ruger is all it will take is a phone call, and they will make it right. They also will go over everything, and the rifle will be right when it comes back. I had to send in a new Single Six several years ago because the Long Rifle cylinder was binding. The case heads were rubbing on the recoil shield. The gun wasn't very accurate, always throwing at least one flyer per cylinder. I made no mention of the accuracy issue when I sent it in. The gun was returned with what I assumed was lapping compound all over it, shooting debris in the charge holes and barrel, and greasy fingerprints all over it. I was completely disgusted when I opened the box. As I started cleaning the revolver up, I soon realized it now had a very smooth action, and after firing for the first time after repair, it now shot like a laser. It still has the original barrel, but someone at Ruger waved a magic wand over it.

I like my American WMR. Its action is much smoother than my vintage Marlin WMR. It also has a better trigger than the Marlin, and the Marlin has a Rifle Basix trigger. I bought the American because it has a threaded barrel, and I wanted to use my suppressor on a WMR. It certainly is quiet with the suppressor, but I cant live with its accuracy. With WMR ammo being hard to come by, it sure would be nice to have a rifle that shot all brands equally well, then I wouldn't have to search for one brand and type of ammo...
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Old May 14th, 2017, 08:54 PM   #6
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weblance, 22 Mags are typically way less fussy about ammo than 22 LRs .... primarily because 22 Mags use jacketed bullets that are much more stable than soft lead bullets in a 22 LR. I have not fired an American WMR but I have seen them at gun shows. They appear to be a high quality rifle .... built more like a centerfire than a typical rimfire. I'm also a big Ruger fan ..... however (long pause) there comes a time when you either send the gun back to the factory or deal with poor accuracy by storing it in the back of your gun safe. In my opinion, life is too short to deal with ugly guns, inaccurate guns, or guns that don't function properly.
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Old May 14th, 2017, 09:06 PM   #7
 
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My brother has the RAR Target in 22 mag also.

And I can tell you, he is NOT impressed with it at all. And neither am I.

We even tried CCI TMJ's, which are awesome in my CZ's, but really didnt help his RAR much. I have a $180 Marlin that will hold tighter groups than his $500 RAR.

His RAR is about 6" @ 50 yards. It sure is purty though.
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Old May 15th, 2017, 07:24 AM   #8
 
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Im going to send it in, then probably sell it. I like that CZ512 carbine in WMR with the threaded barrel. I don't own anything CZ, but am seriously considering the brand. An autoloading WMR rifle seems ideal, and the comments about the 512 in WMR are very positive.
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Old May 15th, 2017, 10:17 AM   #9
 
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Quote:
Originally Posted by weblance View Post
Im going to send it in, then probably sell it. I like that CZ512 carbine in WMR with the threaded barrel. I don't own anything CZ, but am seriously considering the brand. An autoloading WMR rifle seems ideal, and the comments about the 512 in WMR are very positive.
I dont know how the accuracy on the 512 is. I have not read any negative reports. That rifle is on my bucket list.

I can certainly verify what the 455 Varmint and 455 American in 22 mag can do though. They are absolute tack drivers.

I head shot a snapping turtle out of my Dads pond @ 150+ yards with my 455 Varmint.

I can understand you frustration with the RAR. That is a nice looking rifle, nice action, nice trigger, heavy barrel. It certainly should shoot alot better than it does. My brother is pretty much stuck with his since his wife bought it for him as a gift. But the shot groups are so large, he dont use it for any serious hunting. He kinda has a pickle on his hands.
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