.300 Blackout in.223 Rem — Recipe for Disaster

July 20th, 2020Tactical Rifle Shooters’ Photos and Facebook PostsYet another.300 Blackout catastrophe. Unfortunately, the.300 Blackout can fit into a.223 Rem cartridge. Shooting a bullet of.308 caliber in a.223 bore can be disastrous. The.300 AAC Blackout, aka “300 BLK”, a compact 30-caliber ammunition designed to fit in AR-15 rifles. It has a smaller cartridge case that can accommodate the larger 30-caliber bullet, while still fitting into a standard AR-15 mag. Unfortunately, this is the danger. Unscrupulous shooters can mix.300 Blackout rounds with.223 Rem without noticing. The.300 BLK cartridge will chamber and fire with ease because the case-head is the same size as the.223 Rem (5.56×45). The problem is that this forces a.308 bullet into a.223 bore which is undersized. This image was provided by Tactical Rifle Shooters via Facebook. The message was clear. “Don’t run 300 Blackout through your.223/5.56mm. It will not end well. The problem is identical rifles, identical magazines and different calibers. “Image from Accurate Shooter Forum. Cutaway of the jammed.30 Cal bullet:

Here are some tips for those who must have a.300 blackout:1. Use different colored magazines when comparing.300 Blackout to.223 Rem.

2. Fit all uppers with caliber-labeled port covers.

3. Mark upper handguards in.223 Rem with the caliber painted in bright paint.

4. Mark all.300 BLK rounds with a heavy black marker.Comments from People Who Viewed These.300 Blackout Photos: “The Blackout.300 is simply a badly designed round. A properly designed round would have had an element in its shape that would have prevented the cross loading from the start. D. Santiago: “I almost made this mistake… I had a 300 BLK magazine in my.223/5.56 for the entire night. Fortunately, I didn’t pull the trigger. After I realized my mistake, I almost became ill. I no longer own the 300 BLK.” B. Welch: “Happened while I was hog hunting with a helo. Gun exploded in front of me.” — B. B. Hood “Fire-forming projectsiles [is] wrong in centerfire!” M. Stres: “Had a guy come in the store the other day asking for.300 Blackout ammunition to shoot in his 556 AR. It took him 15 minutes to realize that he needed a.300 AAC Blackout Upper! — R. Williams Similar Posts:Tags: .223 Rem, .300 AAC Blackout, .300 Blackout, AR15 Kaboom, Blackout Disaster, Chambering, Kaboom

Interested in getting your Arizona CCW Permit?

Register today to get certified from the best instructor in the valley. CCW Permit classes available throughout the Greater Phoenix Area for just $49.99. Free fingerprinting included!

Share:

More Posts