Mini -14 300 Blackout questions......

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...friend brought me one of these at the show this weekend from a family member and I have NO clue as to the whys and the wherefores, not familiar with the cartridge even, seems to be an offshoot of the old 300 Whisper of years ago.........kinda neat a bit heavy to me, and the serial number is in the #583-300xx range
looks like new, and has it all but the manual............
thank you ahead of time for ANY help, can even contact me if need be.........
(the manual in the picture is from one of my old Mini ranch rifles, and the box is not shown)
 

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basically just some background info, maybe history as I looked in mt RENE and could only find older info on the Minis and I had them in the beginning, the Mini 14 and the Mini 30 Ranch or folders etc, good guns but stopped shooting high power rifle matches at the club and stayed with handguns ,pistols and revolvers, only kept ,my M-1 carbine and my Garand,,,,and shoot neither these days,,,,,,,,
so any basic info likes dislikes whatever so I can pass it on when I move this rifle for my friends family...thank you again;)
 
They seem to be great rifles. Many will whine they're not real accurate yet, don't think Ruger ever claimed they were target shooters either.

I don't know anything about that caliber.
 
.300 Blackout is pretty much the same cartridge as .300 Whisper, deveolped by JD Jones for use in suprresed AR-15s with heavier bullets. Apparently JD didn't patent it, as another company came out with it (I think there might be some slim difference, same as .223 vs. 5.56) as .300 Blackout. It is a fairly popular cartridge, based on the .223. You can even make .300 Blackout cases from .223 cases, pretty easy actually. It will work in AR mags with no modifications.
 
The 300 Black Out's main claim to fame involves launching heavy sub-sonic bullets with a suppressor....Of course it's good for more than just that, but for the more conventional task, it's not quite up to par with the more common 7.63x39, plus .300-BO cost more than reloadable (brass/boxer) 7.62x39, so then there's that....MOST IMPORTANTLY, be aware that as odd as it first sounds, the 300-BO will fit 'n feed from a .223/5.56 magazine AND chamber 'n fire in a .223/5.56 rifle, which as you can imagine, usually purty-much destroys the poor 'ole gun, sometimes injuring the shooter in the process....So, be sure that ever who ends up with that thing is aware of that particular danger....Hope this helps.

DGW
 
thank you and yes and I noticed the large markings, as to caliber, on the two mags that were in the box...it appears to be a really neat rifle, though it seems, feels very heavy, my friends have shown me prices all over the place on the internet, and it will be a "tomato stake" on my table ,next show, run it up the flag pole ,see who salutes...
again thank you......since my friend and Ruger dealer, Bill E., 'appleman' here on the forum, passed away, I do not ,have not followed up or kept up on any of the Ruger long guns....... :cool: ;)
 
The 300 Black Out's main claim to fame involves launching heavy sub-sonic bullets with a suppressor....Of course it's good for more than just that, but for the more conventional task, it's not quite up to par with the more common 7.63x39, plus .300-BO cost more than reloadable (brass/boxer) 7.62x39, so then there's that....MOST IMPORTANTLY, be aware that as odd as it first sounds, the 300-BO will fit 'n feed from a .223/5.56 magazine AND chamber 'n fire in a .223/5.56 rifle, which as you can imagine, usually purty-much destroys the poor 'ole gun, sometimes injuring the shooter in the process....So, be sure that ever who ends up with that thing is aware of that particular danger....Hope this helps.

DGW
A 300 BlkOut will not chamber an fire in a 223/5.56 chamber. Learn basics of a chamber before making comments like this
 
Prove Me wrong. Neck diam on 223 is .253". Neck diam on 309 BlkOut is .334". Pic is of 300 BlkOut in a 223 chamber in AR platform. It will not go in far enough to allow trigger/hammer to engage.

Will a Mini-14 really allow a 300 BlkOut to chamber far enough to allow it to fire?? Let's forget about, "I Heard from ol so an so".
Prove Me wrong
 

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Well, leave it to YouTube!! Someone got one to go in chamber far enough in AR platform to allow it to fire. Of course destroyed the rifle. My apologies for being so blunt when I was wrong
 
We've all tasted that.
Those who haven't are lying about it. :ROFLMAO:

…. Btw …. That's how we learn!
 
Amen to that,,,and the reason I asked the question in the first place, did seem a bit odd to me to see such large printing ( markings) of the "300 Blackout" on the sides of the mags as I noted above,,,and did not see any taper to the mag well such as on the Mini 30s from what I recall many years ago, and the fact there was not an actual manual in the box that may have addressed such concerns as to just what gun and calibers could be "interchanged wrongly"??? Ruger is infamous for their 17 different warnings on or in any given models manual, thank you Mr Sannetti......... ;)
yes , I recall the court cases from back in the day with S&W for one, as well as Rugers:cool:
 
The problem is the ogive of some .308 bullets sits right where the shoulder of the .223 case sits in the chamber. Combination of bullet shape and seating depth allows the .300 to enter the .223 chamber far enough for the bolt to close.
 

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