I loaded some 308 using LC brass and Sierra Bullets. The neck size that its currently is 0.3365in. The case length is 1.9935 in. The neck is at .449. Everything is within limits i dont understand why its not chambering. I bought some winchester 308 and they chamber fine. Smooth as possible. I also load 223 and 30-06 but these 308 have been a pain in the a$$...
You didn't wait for the Lee Factory Crimp Die, did you?
I see the problem as being the crimp you put in it crushed the shoulder just enough to not allow chambering. Back off on the crimp/bullet seating die enough NOT to crimp it at all and see it one will chamber.
Crushed may not have been the right word, more like mushroomed the shoulder! Just enough that it can't be detected with the eye or fingers but the chamber knows.
Which means bringing the ram down until it touches the shellholder, then another 1/4 turn down, then setting the locknut...correct? Would that not set the shoulder back an appropriate amount?
Actually, you do need it unless you are shooting single shot rifle.
EDIT: If you are shooting a bolt action and especially a semi-automatic, the concussion/recoil of the round going off can cause the bullet to move in the brass of the other ones in the magazine. It is unlikely that it will happen but it CAN.
im using a bolt action rem 700. ill try the crimp method. i tried resizing the brass again but still same problem and correct the cases mushroomed down
Don't know if this will help but here is my $.02 worth...
I normally neck size my cases. After a while the rounds are hard to chamber, so I full-length size and the problem goes away.
JFWIW
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