Re: .223 69 grain sierra matchking
Hi Jerry, and thanks for the clarification here. Your question here relates primarily to stability then, with the other issues being a function of other variables. The 1x9" in your rifle with be perfectly able to stabilize that bullet out to any range you want to shoot. At 2850 fps, you shouldn't have any problem at all with hitting an 8" circle at four, five or even 600 yards, as long as you can hold it, and the external factors(wind, inherent rifle accuracy, that sort of thing) don't influence things more than can be managed by the shooter. Remember that a bullet becomes more stable as it proceeds downrange, as rotational velocity doesn't decay anyway near as fast as translational velocity. If it's stable at the muzzle, it should be stable at any range until it goes subsonic. This combination should be good out to about 800 yards or so, when the bullet goes transonic. All kinds of bad things happen at that point, and all bets are off; keep the bullet supersonic all the way to the target. If the combination you're looking at won't do this, it's time to make some changes. The 6mm and/or 6.5mm you mentioned will do this quite nicely!
Hope this is of some assistance,
Last edited by Kevin Thomas; 02-16-2009 at 02:46 PM..