Originally Posted by Edsterfish
What can make a 22-250 shoot 800+ yards accurate and effective? would a 1 in 10 twist be fast enough for that far?
It really depends on the wind conditions you plan on seeing, and also the game you intend on hunting/shooting to define effective.
A 10 twist is known to stabilize 60 grn bullets really well, and you might get lucky with 69's. A 9 twist would be better and virtually gaurantees that you could shoot the 69's and possibly even the 75's. An 8 twist will easily shoot the 75's to 80grn bullets, which will give you the best wind bucking ability and downrange energy, I've even shot 60's with good accuracy at 200 yds with an 8 twist AR.....................therefore, 8 or 9 twist would be my recomendation.
I've shot prarie dogs out to 700 yds and coyotes out to about 550 yds on low wind days with 55's out of 14 and 12 twist barrels, and got 1/2 minute groups at those distances on calm
days; but if I was after coyotes at 700 yds I'd personally want to be shooting the 60 to 75 grn offerings and using an 8 or 9 twist.
If it's windy, I prefer the 6mm cartridges for coyotes and LR prarie dogs; and now days,with wolves coming into the picture; I'll probably use the 6mm's for most of my coyote calling/hunting from now on (just in case I see wolfy). The 223's, 22-250 and 22-250 AI will most likely be used just for prarie dogs from here on out.