Ar15 reloading help needed

[204chucknorris]

I am sure this question has been asked before so humor me. First off I have a DPMS ar15 223 with heavy barrel that I have been reloading for and having issues. The problem is I have the unfired case getting stuck from time to time. I am using a RCBS SB die set along with a redding FL also. No matter which still run I to issue. I have throughly cleaned the gun completely so this is not a issue.  Should I use a different die? Factory ammo works perfectly with no issues. Getting very frustrated with this issue. Any help or ideas would be great as I am sure someone has ran into this before. Thanks in advance.

[yorketransport]

Are you trimming the cases enough? 

Andrew

[204chucknorris]

All cases are checked and under spec.

[204chucknorris]

Coal is 2.250 also.

[wraithen]

Those ar-15's seem to be more finicky than an m-4. I think I'll go with colt if I ever have the black gun itch. Match it with a black hole barrel.

[FC]

Just to clarify? You are full-length resizing and it won't extract reliably?

@wraithen, most AR-15's have M4 feed ramps at the least, what other differences are you thinking to find?

[204chucknorris]

The Redding die is full length and the RCBS is small base. I have used both.

[FC]

Are you ripping the end off of the case or is the extractor just slipping off?

[high country]

Is the gun clean? What does a fired case measure? Does the fte show rim damage? Can you shoot it over a chrono?

[wraithen]

I am actually mostly talking out the other end. I do know I can feed an m-4 absolute crap army ammo (bent, scuffed, chipped) and they all them to get where I point them at and be set up for the next shot. 

[FC]

I am actually mostly talking out the other end. I do know I can feed an m-4 absolute crap army ammo (bent, scuffed, chipped) and they all them to get where I point them at and be set up for the next shot. 

My AR does the same, it seems to have a particular affinity for Brown bear 62gr. hp...lol

[JimmyHoffa]

Sounds like the case neck wasn't resized.  I had a run that were .05 off one time.  COL was good, but the neck diameter was still too large.  It would jam in the rifle and when it misfed the bullet would compress in the case.  Not sure, but I think the reloads were using 5.56 spec brass rather than .223 Rem.  The thicker brass caused it to act differently in the resizer.  And of course .223 has such a weak case head I've ripped more than a few apart.

[Ridgeratt]

Not knowing much about a M-4. But from just reading it sounds like your SB die isn't going full length. Thats from using SB's on 243's and 06's the other is that the brass is too long and needs trimmed. Both of which will cause headaches. My first choice would be take another 1/8th of a turn on the dies.   

[204chucknorris]

The gun is clean as I took it completely appart today. I have not recently measured the cases but measure them regularly and have had no growth issues so far. I currently do not have a chrono. The case will come out I just have to smack the charging handle or pull really hard. Case head is perfectly okay.

[204chucknorris]

Not knowing much about a M-4. But from just reading it sounds like your SB die isn't going full length. Thats from using SB's on 243's and 06's the other is that the brass is too long and needs trimmed. Both of which will cause headaches. My first choice would be take another 1/8th of a turn on the dies.   

This is something I will try next when I load some more.