Well I guess effective is relative, but a comparison is that a .223 Rem has more FPS and energy at 900yards then a .22LR has at 250yards and the common effective distance of a .223 is 500yards. In fact the .223 has more velocity and over double the energy at 500yards then a .22 at the muzzle.
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S&W 15-22 & Ncstar 3-9x42mm.
Last edited by CrispySqrl; 02-28-2011 at 11:13 PM.
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