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Posted: 9/1/2007 6:16:54 AM EDT
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From trijicons web site "The ranging reticle is calibrated for 5.56(.223 cal) flattop rifles out to 800 meters." My ? is what length barrel 14.5", 20" or does it matter which I think it would longer barrel, higher velocity, flatter shooting ect... also what bullet |
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Also from the trijicon site: "03. What bullet was used to calibrate the ACOG scopes? The TA01, TA11, & TA31 (.223) were designed for the 5.56mm, 20 inch barrel, 55 grain bullet, and M16/AR15 carry handle mount. The TA01B & TA11C(.308) were designed for the 7.62mm, 20 inch barrel, 168 grain bullet, and M16/AR15 carry handle mount. The TA01NSN was designed specifically for the US Special Operations Command SOPMOD M4 Carbine. To meet their requirements, the reticle bullet drop compensator and range finding stadia lines were based on the trajectory of the 62 grain bullet from a 14.5 inch barrel, flattop mount (Picatinny rail Mil.Std.1913)." |
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