.223 Freebore for 80gr SMK?

[BSJ]

What are the proper lead and throat dimensions for a .223 Rem chamber for use with 80 gr. SMK's with a OAL of 2.45"?

 

[caroby]

I would say .080 - .100 throat free bore 1deg 30 leade...
My 22br 1-8 twist PacNor was throated with my .085 FB 22br reamer and it allows enough capacity to achieve 95% case cap when 80gr Sierra is seated to the lands. This is just powder compressed... Shooots!:thumb:
Think you'll be just fine with a .085-.090 free bore.

Good luck,
CaleR

 

[gaintwist]

My Kiff supplied design 223 boltgun reamer for 80g bullets has a .080 fb. I would like a little more to keep from compressing 26g loads. Of course, I may get that clearance soon without a throating reamer.
-gt