Been playing around with this round in an AR15 with a 20" bbl.
This version of the 25-223 case is 1.7 and the shoulder is in the same place so its just a resize and trim.
Loaded long at 2.38 in a milled out magazine, I am getting around 2500 with a HBN coated 115 gr berger hunting bullet over a stout load of H335.
Loaded long 3000 fps should be doable with a 80 gr TTSX.
There is a guy over at Arfcom with a 24" barreled Savage in this caliber who has been shooting out to 700+ yards with around 95-100gr bullets.
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