I tend to shoot the caliber that is stamped on the barrel.
Actually the closer parent case of the .223 Rem/5.56 NATO is the .222 Rem Magnum.You are correct in saying you can’t shoot in a ..223 in a .222. Granted the parent case of the .223 is the .222 and they share a lot of the same numbers in regards to case specs, but the .223 is longer overall, specifically from the case head to shoulder, so it’s a no-go.......in other words it won’t chamber.
since the 204 ruger came out in 2004, their is no way it is the parent case,,, Mike walker designed the 222 as a miniature version of the 30-06 and 50bmg.. in reality the 222 was a completely new round with no parent case.Now there is one cartridge that has the parent case of the .222 Rem Mag, that would be the .204 Ruger...........
don't quote me on that,, i tried to find where i read that and cannot... since the 30 06 has a 16 degree shoulder and 222 has 23 degree shoulder i may be having a "senior moment"! ;>)since the 204 ruger came out in 2004, their is no way it is the parent case,,, Mike walker designed the 222 as a miniature version of the 30-06 and 50bmg.. in reality the 222 was a completely new round with no parent case.
My bad.....I didn’t word it correctly. I meant the parent case for the .204 is the .222 Rem Mag. Thanks for pointing that out.since the 204 ruger came out in 2004, their is no way it is the parent case,,, Mike walker designed the 222 as a miniature version of the 30-06 and 50bmg.. in reality the 222 was a completely new round with no parent case.
if it does fire, you will have "fireformed" the case to .223 but since the 223 is longer,, your new case will have a short neck.. I've never heard of anyone "firefoming" brass in a semi-auto though. (when actually "fireforming" normally one would leave the bullet seated far out, so it would engage the lands and push the case back into the bolt so it can fire.. There is no sense in doing what you are talking about however.. it wouldn't result in a catastrophic event either! mainly it would be a waste of a 222 brass!
I didn't know that either,,, thanks,, & i might be wrong on the 30 06 , 50 bmg comment... but i swear i think i remember it from an interview with mike walker i read.. If Mr. Walker were still alive, we could ask him..Mike shot small group at the super shoot one year when he was very old (with 222).. it is still an excellent easy to load for accuracy round.My bad.....I didn’t word it correctly. I meant the parent case for the .204 is the .222 Rem Mag. Thanks for pointing that out.
You're right, I'm sorry. The specs I was looking at showed the total angle of both shoulders and the resolution on the .222 Rem was very fuzzy.Are you sure about the shoulder angle? I’ve got them both at 23*........I don’t know of any .22 caliber that carries a shoulder angle heavier than 35*, (K-Hornet)..........
You forgot the 222 Magnum. Originally developed for the military trials, that settled on the slightly shorter 223. 222 mag is 1/10" longer than a 223, and warnings have existed for decades that if a 223 round is fired in a 222 mag chamber the case will rupture. The grossly excessive headspace that would exist with a 222 round in a 223 chamber would certainly have a disastrous results.Back in the 70s there were three rifle rounds, 221,222,and 223. I haven't seen a 221 sine the early 80s and have only seen one box of 222 in the last 25 years or so. Back then I don't think I ever saw a box of 556 ammo. Play it safe and only shoot the caliber indicated on the weapon. The exception would be the Colt SP-1. They were stamped for 223 but actually were for the 556 because these were military rifles being sold to civilians, this is according to Colt. I was curious because of all this talk of possible trouble shooting 556 in a 223 rifle.