AR Carbine 900 ft lbs @ 100 yds?

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Whether you are looking for philosophy or not, It matters 100% - especially if the DNR officer doesn't approve of 223, and chooses to enforce the law in the manner RC suggested.

You need to be researching regulation enforcement, not sitting around splitting hairs on what bullet weight will give you 900 ft-lbs.

Get a definitive answer - If an officer doesn't want you using 223, all he would need to do is find a published load on his cell phone that DOESN'T make 900 ft-lbs... Then you are facing a citation, suspension of hunting privileges, and possible confiscation of your equipment.

Why not just get a 6.8spc upper? Hell, you could parlay this into an excuse to buy a whole new AR.
 
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The thread is a theoretical exercise to see if something is possible. It is not in search of moral or ethical conclusion.
 
And the 44 mag doesn't even com close to making the minimum...
Not true, a 44 mag out of a carbine can comfortably exceed that. 20.5gr of H110 can push a 300gr Sierra to 1580fps in an 18" tube, that will still be maintaining 1204 fpe at 100 yards. The 44 Magnum can be quite a bit more powerful then people realize in a carbine. Even if energy figures were similar I would MUCH rather have a 300gr 44 slug then a 55gr 22 cal for hunting, that is not even a close contest I posted side by side ballistics tests for both once and the 44 did considerably more damage.
 
Sure. I should have been clear I was referring to handgun hunting, just to make a point that most people would think a 7.5" 44 mag pistol is plenty for deer. But the fact is majority of factory 44 mag loads can't make the 900 standard at even 50 yards. I've shot plenty of whitetail with the 223 and 44 mag pistol at <100 yards , and it was very clear the 223 put them down quicker. I attribute that to the higher velocity maybe producing a bigger temporary cavitation wound? In any case my sample size of less than 50 has shown this in my experience. Certainly they all ended up just as dead in either case.

Not true, a 44 mag out of a carbine can comfortably exceed that. 20.5gr of H110 can push a 300gr Sierra to 1580fps in an 18" tube, that will still be maintaining 1204 fpe at 100 yards. The 44 Magnum can be quite a bit more powerful then people realize in a carbine. Even if energy figures were similar I would MUCH rather have a 300gr 44 slug then a 55gr 22 cal for hunting, that is not even a close contest I posted side by side ballistics tests for both once and the 44 did considerably more damage.
Today 09:16 PM
 
Well that exact same load in a 8.25" revolver gives 1423fps which is still good for 990 fpe at 100 yards, but of course I am talking rather stout handloads. The larger TWC associated with the high speed 223 is more incline to shock kills but since the 44 is such a larger caliber it will make for more reliable kills since the PWC tends to be much larger an more free bleeding, as with everything in life it is a trade off, of course it also depends on the bullet used as well.
 
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