Need help with Mini-14 scope setup

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Snowblind

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Looking for some troubleshooting on my mounting setup. I wanna go through all the details in the hopes of finding the best solution, so please bear with me if this is a bit verbose:

I got a Redfield Revenge 3x to 12x scope for xmas, mounted it to my Mini-14 using the rings that came with it, and tested it today.

Alas, the setup was plagued with issues. The most pressing however is that the rifle does not seem to function properly with the scope set up as I had it. On a 5-round mag, I was getting 3 or sometimes 4 failures consistently. Mostly failures to eject, with the brass being pinned by the bolt, but sometimes failures to extract or even double feeds, both of which I never got before. I can't wrap my head around it, this seems to be the 'intended' way for scopes to be mounted to the Ranch rifle, and yet it could barely function...

I had previously mounted a red dot on a Ruger factory 1913 rail over the action, but it jammed at least a few times per range session, almost always a failure to eject. This setup stayed on for about 1500 rounds. When I got fed up and took it off, I discovered that a corner of the red dot's base had actually been rounded off, most likely by being hit by EVERY CASING on its way out.

I had thought that using Ruger's 'factory' mounting setup (using their own rings that came with the rifle) would fix the issue, since the scope is significantly higher than where the red dot sat, but, sure enough, there were brass marks on the bottom of my brand new scope after my session.

Just to double check, I actually pulled the scope off and fired with just the irons, which went through two 10-round mags without a malfunction.

Does the Mini just not want anything mounted over the action? Is it just a matter of getting really tall scope rings? What are my options here? It would be a shame to box up this scope, I had spec'd it out for this rifle.
 
Well, that much does seem obvious, but why is it that a scope mounted higher over the action interferes more than the rail I had, mounted much closer? And more importantly, if the factory-designated scope setup doesn't work at all, how do I mount a scope on this rifle?
 
the mini-14 tends to reject any attempt at improving accuracy.

it wants you to simply enjoy it in its wild-type configuration
 
Ruger mini's really fling the brass out hard. On my 14 and 30 I installed smaller gas bushings to eject less violently...drops the brass 10ft away instead of 30 or 40, haven't had any issues with it hitting the scope or mounts.
Might try that as a cure.
 
Look at your extractor or ejector. I have a Mini 14 Ranch Rifle with a whole bunch of rounds through it and the brass doesn't hit the scope at all.
 
It is possible the ejected brass is hitting the scope. If the scope has regular cross hairs it is possible to mount it at 90 degrees. This will get the windage adjustment knob on top and out of the way of ejecting brass. The elevation knob will now be on the left side.

Of course moving the windage knob to the right will now move POI up. Turning the adjustment left will now change POI down. Same with the elevation knob. It will now change windage.

It looks a little funny at first, but does give a little more room to work around the ejection port and may solve your issues.
 
It is possible the ejected brass is hitting the scope. If the scope has regular cross hairs it is possible to mount it at 90 degrees. This will get the windage adjustment knob on top and out of the way of ejecting brass. The elevation knob will now be on the left side.

Of course moving the windage knob to the right will now move POI up. Turning the adjustment left will now change POI down. Same with the elevation knob. It will now change windage.

It looks a little funny at first, but does give a little more room to work around the ejection port and may solve your issues.
That's a good idea, but besides the scope not being a standard duplex, the brass was actually not hitting the adjustment knobs; the marks were actually on the underside of the tube itself.
 
Ejects just fine. I believe these are medium rings, but would have to check. A longer scope would have even more clearance. Is yours a Ranch rifle?

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It is indeed a ranch rifle, a VERY new ranch rifle. I've only had it since September, but I've had a lot of time to shoot it. I'm somewhere around 1700 rounds through it, and it has ALWAYS been a jam-o-matic. Sometimes worse than others, but in 1700 rounds I haven't had a session where it didn't jam.

I've tried different ammo, different mounting setups, scopes, no scopes... it seems to run better without the scope mounted on it. But even dead stock it jammed. It jammed on the first magazine I ran through it, and I only use factory Ruger 5-rounders and ProMag 10-rounders, which jam in equal abundance.

I just got back from the shop I bought it at, and they said it was time for it to go back to Ruger, and I think I might have to agree with them...
 
they said it was time for it to go back to Ruger, and I think I might have to agree with them...
I agree with them too. I'm sorry you're having problems with it.
 
Agh, since it also malfunctions without the scope, and is new, I agree, it needs to go back to Ruger.
 
Boxed it up, sending it back to Ruger. Thanks for the help in trying to diagnose, but it seems it'll just have to be up to Bill's ghost and the rest of the Ruger gang to straighten this out.

I'll post updates when it comes back, especially if I get some details as to what changes were made.
 
Perhaps They need to decrease the velocity of that ejected case; wonder if they'll do that by adjusting the ejector, or slowing down the gas through the rifle? Please let us know what they say.

Very frustrating for you with a new rifle, sorry about that. :(
 
I have a feeling it's an extractor issue. I got a few failures to extract in the mix, so I feel like it might be a bad extractor that won't grab the shell sometimes, and other times grabs it and won't let go, preventing the shell from properly ejecting.
 
Sending it back is the way to go. I have a few different generations of them and while they might not be the most accurate rifle out there they are normally always reliable.
 
Honestly, first time I have heard of this with a Mini. I think my first was a 180 or 181-series, bought used back in 1984 or so. It had the "Square-D" or whatever the mount was...pre-Ranch Rifle. Worked just fine with a scope, and I miss it, but it is long gone.

I currently have a Mini-30 (bought used, in about 1992) and a stainless Mini-14 (bought used, in about 2001), both Ranch Rifle configuration, both scoped, and both have worked fine for years.

Only Ruger I ever had to send back was my first LCP, and that was at their request, not mine (recall)--worked fine both before and after.

I'm pretty sure Ruger will take care of you.

Subscribing, just to make sure...
 
Got my Mini back from Ruger yesterday. As I'd expected, they replaced the extractor. I'll be putting it through its paces this weekend, but I have to say I'm impressed with the Ruger service, was quite a quick turnaround, and the whole process didn't cost me a cent.
 
After many, many delays, I finally got out to the range and gave the Mini a good workout. I went through about 150 rounds, and it's working much, much better, but not perfect. I had five malfunctions, two of which were a failure to eject, (the kind I had hoped were resolved), one was a misfeed which I attributed to the magazine (I was using one of my promags), and the others were failures to fire, looked like light primer strikes. This really threw me, since in 1700 rounds I'd never had it fail to go bang with a live cartridge in full battery.
 
All things considered, it functioned infinitely better than before going back to the factory. Most of the malfunctions seemed to happen in short order, sort of right in the middle of my session, so I had a long stretch of it working fine, a bunch of malfunctions, and then it worked fine again until I was done for the day. Maybe just a fluke, or a bad magazine?

I felt like taking some pictures, so here's the current setup. The optic in front is a 1x red dot mounted at a 1 o'clock offset. Because, you know. Why not.

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And here's some of my shooting, this was at 100 yards with the 9x scope:

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Not bad considering the Mini's reputation, though I feel there's room for improvement. (I'm still probably the weakest link) :p
 
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