.223/5.56 Semi-Auto Full-Auto Reloading Dies

[GooseGun]

I've been doing some research but I'd like a updated opinion. What are the best dies for progressive .223/5.56 meant for semi-auto or full-auto rifles?

[joelogic]

There are only .223 dies and no such thing as dies meant for full auto guns.

I like Dillon.

[CityHunt3r]

There are only .223 dies and no such thing as dies meant for full auto guns.

I like Dillon.

I've read that if you plan on reloading for semiauto or full auto you should use a taper crimp to secure the bullet from moving. Most rcbs die sets.come with a tapered crimp die.
I've also read that the tapered crimps are good for magnum loads too to prevent bullet creeping.

Do your own research and decide for yourself.

Some people even say the roll and tappered crimp aren't all that different its just based on preference, some bullets have a crimp line or groove I forget the term, and some dont.

[C3nt3rMa55]

I've read that if you plan on reloading for semiauto or full auto you should use a taper crimp to secure the bullet from moving. Most rcbs die sets.come with a tapered crimp die.
I've also read that the tapered crimps are good for magnum loads too to prevent bullet creeping.

Do your own research and decide for yourself.

Some people even say the roll and tappered crimp aren't all that different its just based on preference, some bullets have a crimp line or groove I forget the term, and some dont.

Cannelure

[joelogic]

A lot of people don't even crimp for semi auto rifles, YMMV.

As a side note, if you own a Full Auto gun I would only shoot factory ammo. Since the receiver is irreplaceable I would not risk it.

[slopoke]

I think the OP is asking about brass that was shot out of a full auto or semi auto firearm? If that is the case, I've read that sometimes brass that has been shot out of a full auto firearm needs a small base die the first time, then the next time you reload that brass, a standard die will be fine.

Me, I would first buy a standard die only, size with a standard die and check to see if it chambers in your firearm. If it dose not, then get a small base die.

[russt]

I recommend reading the abc's of reloading. It had good info in it.

[koehn,jim]

Slopoke buying two dies is an expensive way to learn, i use small base dies in any thing that is meant for a semi-auto. I had a slam fire once 25 years ago and never plan to repeat it. If you want to be sure, fl size with small base dies and use bullets with a cannelure and crimp the case to the groove. The military does it that way for a reason. Other ways will work and many people do them, me I want 100 percent fool proof ammo.

[mark501w]

small base rcbs.

[Tbrad10]

For my AR I use the RCBS .223/5.56x45 SB T/C Die set. PN 11107
Sets the shoulder back so it feeds better. Loaded 1000's of rounds and have never had a FTF.

[slopoke]

Slopoke buying two dies is an expensive way to learn, i use small base dies in any thing that is meant for a semi-auto. I had a slam fire once 25 years ago and never plan to repeat it. If you want to be sure, fl size with small base dies and use bullets with a cannelure and crimp the case to the groove. The military does it that way for a reason. Other ways will work and many people do them, me I want 100 percent fool proof ammo.

Where in my post do I suggest buying two dies? I recommended that he or she buy a standard FL die, if the round dose not chamber, then I suggested getting a small base die. Why overwork your brass if you don't need to.

In regards to your slam fire issue, it was probably a case of the primer not seated below flush or soft primer, not because a small base die was not used. I can see a possible out of battery fire due to a round not chambering, because it was not sized enough, not a slam fire.