R.W.Dale
Member
You do realize that was posted to this thread several days ago right?
posted via mobile device.
Attention Law Enforcement Agencies, this Police Department is seeking any similar incidences with the .223/5.56 style rifles.
On 02/14/11 an officer was attending an M4/MP-5 class and during a shooting session, the .223 rifle (Stag Arms) experienced a catastrophic failure resulting in an upper receiver cracking and the bolt being pushed into the bolt assembley.
During a SWAT training day on 02/23/11, three more M4 style rifles experienced a catastrophic failure at the same time. All three rifles experienced the bolts being pushed into the bolt assembly, the upper receivers were cracked and / or broken apart, and the lower receivers were bowed outward. The ammunition we used in all the rifles were Winchester RA223R2 Ranger 64 gr. Power Point.
The Rifles were: 1-Colt, 2- Bushmasters and 1 – Stag Arms
OFFICIAL RECALL NOTICE
East Alton, IL – Olin Corporation, through its Winchester Division, is recalling six (6) lots of its RANGER 223 Remington 64 Grain Power-Point (PP) centerfire rifle ammunition (Symbol Number RA223R2). Through extensive evaluation Winchester has determined the lots of RANGER Law Enforcement ammunition listed below may contain incorrect propellant. Incorrect propellant in this ammunition may cause firearm damage, rendering the firearm inoperable, and subject the shooter or bystanders to a risk of serious personal injury when fired. To determine if your ammunition is subject to this notice, review the Lot Number . . .
If the last four characters of the Lot Number are DK01, DK11, DK21, DK31, DK41 or DK51 immediately discontinue use and contact Winchester toll-free at 866-423-5224 to arrange for replacement ammunition and free UPS pick-up of the recalled ammunition.
You do realize that was posted to this thread several days ago right?
(The following is just a generalization to demonstrate the concept. DO NOT hold me to the exact numbers as they are not correct and they ignore the difference due to the different methods used to measure chamber pressure.)
I have both calibers. I have shot hundreds of of 5.56 rounds from .223's. But there is one thing you really should pay attention to.
That is the chamber on your .223. I have found the ogive on most 5.56 ammo to have a shorter radius making the fat part of the bullet stick a bit further into the chamber.
If you have a tight .223 chamber you may very well engage the lands in your .223 with the 5.56 bullet. This will cause excessive pressure.