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Mini 14 584 series

This is a discussion on Mini 14 584 series within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; Finally got the new Mini 14 out to see what it would do. At 50 yards with iron sights I can cover almost all of ...


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Old January 10th, 2019, 01:49 PM   #1
 
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Mini 14 584 series

Finally got the new Mini 14 out to see what it would do. At 50 yards with iron sights I can cover almost all of my shots with my fist. Not at all displeased with that.

My question is it's throwing brass at 3 o'clock. Lord help anyone that is to my right.

If I were to change out the gas port fitting which way would I go with the new one? Larger or smaller? I would like it to throw brass at about 2.



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Old January 10th, 2019, 04:47 PM   #2
 
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A smaller bushing will reduce the distance the brass is thrown. I'm not sure about the direction. mine was throwing it pretty far (20 feet) I put in a small bushing .045 and it reduced it to about 8 feet. It still functions great and they are easy to change. Mine usually throws it at 3 o'clock always.


Ruger Mini 14 30 Gas Reduction Bushing Kit Accuracy Systems Inc
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Old January 11th, 2019, 06:21 AM   #3
 
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There would be less work required if an adjustable gas block is purchased, less machining/filing required and is easily reversable on gas setting.

I would recommend the one that uses a set screw to keep the adjustment screw from moving.

I've heard at least one report of the knob with detents gas block failing. I am not saying this version is not reliable, but set screws seem to be less failure prone.

I know if I want to turn the gas down on my mini in 300 blackout, I am getting the set screw version if it is still available.
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Old January 11th, 2019, 07:51 AM   #4
 
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Originally Posted by havoc_squad View Post
There would be less work required if an adjustable gas block is purchased, less machining/filing required and is easily reversable on gas setting.

I would recommend the one that uses a set screw to keep the adjustment screw from moving.

I've heard at least one report of the knob with detents gas block failing. I am not saying this version is not reliable, but set screws seem to be less failure prone.

I know if I want to turn the gas down on my mini in 300 blackout, I am getting the set screw version if it is still available.
Actually . . . . no. You take off the gas block, remove the gas bushing and insert the new 0.045" one, replace the gas block and you're done. No adjusting, no fiddling, no screws to fail. Adjustable gas blocks, by their very nature, are more prone to failure than a solid gas bushing. More parts, more chances to fail. It's science and engineering not guessing.
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Old January 11th, 2019, 08:02 AM   #5
 
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I just took an old fish net I mounted to some 1 inch PVC pipe, added some legs for a stand, stand it in a cardboard box and it works great catching any brass ejected shooting prone or off the bench regardless of any direction it ejects. Still have great field of view to the side (because it's netting). No hunting and chasing brass.
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Old January 11th, 2019, 09:34 AM   #6
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Sundown, it sounds like a smaller gas bushing is in order...

I agree with COSteve, but for reasons other than reliability (which is a valid comment).

KISS is the fundamental concept here, and an adjustable gas block isn't part of that. Many (most?) buyers of an adjustable gas block are "tuning" for a load they develop, which may be helpful if you re-load.

Replacing the gas bushing is simple, given the right tools: a 9/64" Allen wrench (or preferably a 9/64" driver connected to an inch-pound torque driver and torqued to about 30 inch-pounds). These are for the gas block screws...

Depending on the length of your barrel, different sized gas bushing may be required. My 16.1" Mini Tactical would most likely be served best with a 0.070 bushing; an 18" Ranch Rifle probably around 0.045-0.055. Every Mini is different, but 0.050 seems to pretty much cover all Mini-14s with an 18" barrel. If 0.045 works, great, but that all depends on your particular Mini and the ammo you use.

There are a number of places that will sell a single size, or a three-size set, (such as 0.045, 0.050, and 0.055). Given the cost of shipping something not much bigger than a pencil eraser, getting a "three-set" makes the most sense; particularly if the single size you order doesn't work out...
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Old January 11th, 2019, 11:44 AM   #7
 
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Thank you everyone. Very helpful,

I had sold my old 181 series that spit brass at about 2 o'clock at least 25feet. It wasn'r a tack driver by any standard just a reliable little truck gun,

Now, the new 584 series I just got is another matter. Very happy.

Again, thanks.
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Old January 11th, 2019, 12:38 PM   #8
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Sundown, my 181 - that I've had since 1980 - has always spit brass within 4'. It is as it left the factory in 1977. A function of the ejector spring in the bolt more than the gas block (different means of ejection). Big difference in the ejection mechanics between the old non-ranch models and new ones - that eject is based on the force of the bolt slamming to the rear.

For my two Minis (181 and 583), there are different techniques to address in terms of ejection distance.

Congrats! We'll help where we can!
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Old January 11th, 2019, 02:24 PM   #9
 
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So, what is the highest prefix on the mini-14? Ruger's history list stops at 583 but you picked up a 584.
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Old January 12th, 2019, 05:16 AM   #10
 
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So, what is the highest prefix on the mini-14? Ruger's history list stops at 583 but you picked up a 584.
I saw that on the Ruger history page. Maybe they just haven't updated the page yet. I did wait almost 3 months to get "Baby".

Wood and stainless isn't easy to come by apparently. My LGS had 3 or 4 composite/black Mini's sitting in the display board.
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Old January 12th, 2019, 10:57 AM   #11
 
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The Mini 30 i just picked up is a 584 with a serial # less than 10000. I would assume it was manufactured less than a year ago, so the records are not yet updated
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Old January 12th, 2019, 11:21 AM   #12
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Ruger ran out of numbers beginning with 583. It happens, and is a good thing!

I suspect zero mods, just new numbering.
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Old January 12th, 2019, 04:34 PM   #13
 
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Thanks.
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Old January 12th, 2019, 06:55 PM   #14
 
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not unusual.
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Old January 13th, 2019, 07:51 AM   #15
 
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I always take the last stall at the firing range with my 581 mini. It spits out the brass almost as fast as a bullet! Anyone next to me might get one in the eye
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