Comments on: Scary Stuff — .300 Blackout Fired in a .223 Rem Barrel

By: Ari heade

Ari heade — Thu, 05 Oct 2023 03:43:55 +0000

Well I have just finished firing 7 rounds of .300 blackout through my ar-15 chambered in 5.56 Nato. I’ll start by saying no visible damage was noticed and no injuries occurred.
The problem was the .300 blackout was stamped. 223 rem. Obviously a shortened and reloaded batch of ammo that a local reloader sold me ‘accidentally I hope’ I get it we are human…..we do the best we can but sometimes that is just not good enough and people can get hurt or die….luckily that didn’t happen today….
I made the mistake of assuming what I had bought, loaded, and fired was what I asked for, I even slightly second guessed it when loading a mag but continued after reading the stamp…..223 ok I’m not crazy..continued on and locked in the mag and sent a round into the chamber…..the bolt didn’t fully engage so I pulled the charging handle and swiftly ejected the first round. The second round chambered up no problem and I fired the shot……went to fire another and the bolt didn’t fully engage again, yanked the charging handle, ejected the unfired round and the next round went in no problem…..fired but failed to fully chamber the next round again……so in total, 7 .300 blackout rounds were fired from two mags through my 5.56 Nato barrel….will be inspecting everything more throughly tomorrow…..thank God it ended up being an injury free mistake, only thing that’s gonna hurt is the ears of the guy who sold me the ammo…..

By: MarkS

MarkS — Tue, 21 Mar 2023 00:15:57 +0000

Sounds to me like people don’t want to be responsible for their own decisions honestly. Lets blame the round or the manufacturer for our inherent failures….seems about right these days. How hard it is to keep your ammo and mags separated? Lancer and PMags exist in 300 specific mags, maybe own both and segregate that way? Lancer sells colored aluminum mag extenders, this is how I differentiate. Lots of options out there to fool proof the process, including your own eyes. Yet still there are some fools that you just can’t proof for.

By: Rick Gilhousen

Rick Gilhousen — Thu, 29 Sep 2022 08:10:42 +0000

Some Scary stuff there. I’ve reloaded all my life never. Had an accident yet I’ll be 71 on this coming Monday started reloading at age 12 yrs old maybe I’m just lucky I hope not I try to always do right and have done that I’m on my phone so can’t really read this got to look on my computer but to late right but there is on one of the first two Articles I was confused about the part 30 cal bullet and the 300 I will get back to all but the first thing that comes to mind is why would u want to put that into a chamber in the first place I would have the barrel chambered to fit it in the first place not looking for a fight her just trying to understand why any one would do that To me it’s almost like dropping a 12ga round down the barrel of a 19 gage shotgun battle any way I would like to respond agen to this post after read all that’s there. Once again not trying to offend anyone just trying to get to the point of the deal just doesn’t seem right in my mind that’s not something I would do but anyway thank you for reading and I’ll get back to you guys thank you Rick.

By: Stalker6Recon

Stalker6Recon — Sat, 02 Jul 2022 14:01:23 +0000

Will someone please explain to me what the point of buying a new upper to fit on your old lower in a different caliber like the 300blk offers the shooter?

I am all for having different rifles that have different capabilities, we used them in the Army because of the capabilities it provided the squad and platoon.

This just seems like people trying to get over on the cheap. Just buy a new 300blk rifle.

It doesn’t alleviate all poosible screw ups, but it takes one part of stupid put of the equation. I just don’t get this whole cheap phenomenon of interchangeable uppers, other than getting people to screw up just for shits and giggles.

By: Jeff Carr

Jeff Carr — Fri, 24 Jul 2020 22:40:19 +0000

I’ve seen a 308 Winchester cartridge case after it was unknowingly fired in a Sako 270 Winchester rifle. The Sako rifle survived the incident.

By: JBelk

JBelk — Wed, 24 Jun 2020 17:34:28 +0000

SAAMI has published a list of ‘cross-caliber’ chamberings. One not on the list but should be is a .308 Win in a .270 Win chamber. It does fit, it does fire, it does wreck the rifle and hurt the shooter sometimes.
I can see where color coded uppers mags would be a good idea in this circumstance. There’s been enough 243s shot in 308s and 270s in 30-06s
and 30-06 shot in 7Rem Mag to know bullet diameter is not always noticed.

By: StraightMiataMan

StraightMiataMan — Sun, 18 Aug 2019 02:16:01 +0000

This is part of why I’m a fan of 277 Wolverine. Larger heavier bullets than 5.56, slightly better than 300blk supersonic, though not quite as good subsonic. It’s just hurt by a current lack of market support, but it won’t cross-chamber like 300blk can. “Just pay attention!” Yes, that’s all well and good and should be done regardless, but it’s also good to minimize risks when you can.

By: Jeff

Jeff — Sat, 17 Aug 2019 22:28:52 +0000

Author mentioned a careless shooter could load 300 Blackout into .223 chamber. The problem is not the round. There is no room with firearms for the careless shooter. What other life threatening mistakes are made by the careless shooter. Been shooting both rounds for years, never an issue. Know your firearm!

By: Richard

Richard — Sat, 17 Aug 2019 21:32:20 +0000

Is this issue for all bullet weights or just the lighter, supersonic loads?

Noting that in the past few months I have had to remove a 308 from the firing line with a 303 round jammed in the chamber and then have a direct and unambiguous discussion with its owner about never-ever putting different rounds in the same ammo box, I am not surprised these things are happening.

By: Paul

Paul — Sat, 17 Aug 2019 15:31:21 +0000

I’ve never had a problem . This sounds to me like carelessness. I know what bullet goes in my guns plain and simple !!!