On Thursday, January 29, 2015 at 9:21:52 PM UTC-5, Tim wrote:
On Thursday, January 29, 2015 at 5:17:55 PM UTC-8, Someone Else wrote:
Poquito Loco wrote:
For a new production AR style rifle the difference between 223 and 5.56 is very
similar to buying 12 large eggs versus buying a dozen large eggs.

I use Accurate Arms 2230 powder, a mid-range powder charge for 50 gr HP bullets, and
shoot that load in 5 different rifles accurately without a problem. I use mixed brass
and don't sort headstamps. I make sure to separate range brass (military vs
commercial) to ream military primer pockets to remove the crimp.

I won't bore you with details about cleaning, tumbling, case length, and trimming
brass.


EDIT: A chronograph is the only thing that can tell the difference between a 3100 fps
or 2900 fps bullet. Neither a target or prairie dog knows the difference. A prairie
dog does know the difference between 223 and a 25-06 -- there is less to pickup if
you use a 25-06.


Makes me want to run right out and get a Mini-14.
From what I've read, some barrels can't handle the pressure of the 5.56.

I've shot both in a Bushmaster I had, my Steyer, and mini-14. no problems in any of them.

I see no reason to buy an AR chanbered in .223. If you get it in 5.56, you can safely shoot both, and there's really no difference in accuracy. Then just buy the ammo that meets your price and perfomance needs.