223 & 556 Calibers in one rifle for target shooting up to 300 yards

silverfoxdj

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Are there any rifles that lend themselves better to shooting both 223 and or 556 acurately with factory ammo?

What is the criteria if anything? I know 556 is hotter but what about wear etc..to the rifle?

I'd like to alternate between Milsup and top factory to make the best use to establish what will shoot best and keep practise costs down.

I'm partial to CZ, and need a valid arguement to look at other options.

Let the owners chime in? thanks in advance..
 
I understood there was a small difference in the cases that would require a change in the loading ramp or something to that extent. So it was not necessarily a slam dunk to any 223 rifle.. Perhaps someone will chime in to clarify. It would be nice to have both capabilities..
 
There was a great article in American rifleman(I think) about getting 223 chambers reamed to 556 and that there was no difference in accuracy etc, I'll try and find it and pm you a scan.
 
There was a great article in American rifleman(I think) about getting 223 chambers reamed to 556 and that there was no difference in accuracy etc, I'll try and find it and pm you a scan.

That would be great to tell the truth I have never recieved a streight answer from rifle guys in the stores about which if any firearm can handle both calibres without modification.
Perhaps I just don't get the issue with respect to the rifle itself as everyone talks about the rounds itself being identical.
 
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