The .17 HMR in this platform is extremely accurate with groups of 1/2" to 3/4" the norm. (Depending on whose behind the trigger). Both length barrels are equally as accurate with the 18" giving a few more FPS, (probably 50-75). These rifles are very reliable and so far the only issue I have had was with a modified trigger I tried that wouldn't reset. I changed to a standard AR mil-spec trigger & everything was fine. I just put one together with a 3 lb. Velocity drop in trigger, it is really sweet. All in all its a pretty neat package!
Hope you are enjoying yours, Carl.
