reload problem

I don't think its a overall Length problem. If they went into the magazine with no problem, the length is good. But it does look like a non existent crimp on the round in the picture. My next question is "Who put the dent in that second round ?" I'm not an AR expert, but I do reload a lot of .223. If the dent was in the case before it was attempted to be chambered, its a non issue, but something put the dent in it and it took some force to do that. Next question to you is "Was all of the brass correctly trimmed to size before reloading ?" If these two rounds are shorter than all of the others, then there is the reason why they are not crimped.

 

When loading for any semi-auto rifle, it is a must to have the bullet crimped. The condition you encountered can be catastrophic as you will see below. When I load .223/5.56 for my Mini or an AR, they are loaded using a slightly undersize (.001") expander ball and using a taper crimp for a tight bullet grip. The photo below shows what can happen and did happen to one of my customer's AR about 18 years ago. The same condition, except the round fully chambered and fired. It exploded the upper, ballooned the lower and exploded the magazine. He did receive several minor injuries and was lucky that was all.

Jim............

I knew I kept the upper parts all these years for a reason !!!!!!!!!!!!

 

I think right here is why I dont shoot reloads in the AR or the Mini. After using the pencil on the Big Chief Tablet, I came out with the idea that I could buy imported ammo at a lesser cost than the components to reload,,,and so I have been leaving the empties lay where they fall.

 

A firm crimp is important for many self loading rifles. You seem to have NO crimp.

Yes W.C. you can buy cheap import ammo for less than you can buy quality components. If all you want to do is shoot cheap ammo, go ahead. If you want quality ammo for about the same money, Handload. My "cheap" plinking load will shoot sub MOA all day long. Not even "good" milsurp or "white box" ammo will do that.

 

I have a complete reloading bench with 4 dedicated presses and all the "stuff". My cheap import ammo does just fine, I do a lot of shooting, but it does not require sub MOA, MOA works just fine for what I need. I reload a lot of ammo as you must guess, but I dont reload 5.56, nor do I reload 9mm. It is more economical to use the import for those 2 cartridges. I do reload for my business rifles though. They are used long range, and must kill on the first shot. My M700 will shoot sub MOA with my reloads. I just dont need sub moa for day in and day out coyotes!!!!!!

 

One of the problems with this is inconsistent length. Even though they are under max length, differing lengths cause inconsistent crimps. I trim all .223 cases to "trim length" and set the Lee Factory Crimp Die to make a consistent crimp.

 

Just out of curiosity, do those bullets have a crimp grove (I know it's called something else but I'm not about to try and spell it)?

 

You may try turning the seating die down slightly, maybe 1/16 of a turn and press the shoulder down. This will help give a tighter roll crimp as well. You always want a slight crush against the shoulder when loading for semi auto.

 

Use the small base sizing die and full length resize the cases when reloading for a semi auto. That will solve your chambering problem.

Jim..........

 

It is well known to anyone who reads this board that I am not a fan of LEE products.

However, having said that, I use the LEE factory crimp die on all semi-auto ammo. It works!

 

Measure your handloads ...

jjfuller1 .......

I recommend measuring the ID of your cases. The case necks should be cleaned with a bore brush and then FL resized to .221" This will provide ideal bullet tension. There's no need to crimp the .223 Remington case if you FL resize accurately. The SB die is rarely needed, and if used (when not needed) it causes more problems than it solves.

Your "feeding" symptom is different from a chambering problem. The odds are very good that your magazine lips are releasing your rounds at a bad angle. That jams during feeding, and it dents the case as the bullet tip slams into the barrel extension.

 

This is not one of my cases, but from a box of attempts by a former tenant of my house, to reload. These are R-P cases, and what is going on here is that he had his seating/crimp die turned in about a half a turn too far, and crushed the shoulders.


The point being, that the crimp die is pretty sensitive, and a little adjustment makes a lot of difference.

I would have stopped and adjusted after the first one, but this fellow apparently thought it would cure itself and did about 30 rounds like this. This box of "goodies" that I found in my basement, contain samples of everything that a reloader should never ever do.

 

That's a good one!

However, I think I can top that.
How about this one?

​

A friend of mine calls this the .223 Rem. "accordian" round. He made this with a Dillon RL550 progressive press.
There are a series of adjustments that ALL need to be set correctly before cranking out handloads.
He stopped to read the instructions after making just one of these. Ha Ha
Just when you think you've seen them all . . . . . .

 

the only time I had chambering problems was with the crimp die moved down to far like the others said. If it is a small amount it may not be obvious but it bulges the shoulder just enough to make it too fat to chamber. I personally do not crimp my 223 at all and have not had any problems with bullet setback.Maybe I'm just lucky to have good feed ramps.