22-250AI
This maybe a dumb question, but I'll ask it anyway. I was looking at a 12 twist barrel and was told it wouldn't stabilize heavier rounds. That I would need a faster twist. I am seeing alot of 14 twist barrels. What is the benefit of the slower twist?
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ATHOMSON,
Better stability with lighter bullets. If the twist is too fast for a given length bullet it tends to bring out the anomalies with that bullet. For instance a bullet is .0005" out of concentricity. The increase in rotation will magnify how much it wants to 'wobble' while in flight. Using just enough twist to stabilize it won't magnify it as much. It's usually a case where EXTREME accuracy is required. For even .5 MOA accuracy it isn't going to matter that much. If a bullet is out of round very much at all it isn't going to shoot anyways.0 -
Your 12 twist barrel will not stabilize bullets much heavier than 60 grains, and a 14 twist won't do it much heavier than 55 grains... a slow twist barrel is usually at it's best inside of 300 yards, where a 9 twist and 75 grain bullets are good to as far as you can shoot...
A fast twist will shoot the lighter bullets as good as the heavy weights usually...0 -
the 14 twist is IMHO RETARDED thinking on the factories behalf. They figure the standard 50-55gr pills is all anyone will want to use, and I guess the explosions on rodents make for a fun display of mist and particulate, but it severely limits the potential of even the lowly 222rem. With the case size of the 22-250 and AI design as well as the 220 swift, they could utilize a much faster twist and effectively run 70-90gr pills into the wind at long ranges with superb results. However, the factory doesn't worry about us handloaders and worries more about the over the counter shooter who isn't even very proficient past 200yds[V] 0 -
justC, I already have a swift and it is alot of fun. My goal was for a 22-250AI that I could hunt whitetail with factory loads up to 75-80 gr and then use lighter ammo for varmints. I would be fire forming brass from the first to reload for the second. This firearm is intended for my twelve year old son. I found an AI fluted, 26" stainless Savage barrel for 100.00, but it is a 12 twist. It sounds like I need a 9 twist to make my plan work. My plans always end up costing more and taking longer. Such is life. 0 -
JustC,
You're not tellin' it like it is or anything are ya???!![:D][}:)][:D]
In fact, I agree. The fact that the .222 Rem that set so many records that still stand today, were set with light bullets for caliber. Something that could be rectified by a better (tighter) twist to help increase range. The 14" twist was a brainchild of the 1910's when things like the .22 high power and .250-3000 came out and at that time the .30-06 was still stuck on 1-12" twist. Twist wasn't something that people looked at then. Or, when they did, wondered aloud why it wasn't like it always was...0 -
quote:Originally posted by ATHOMSON
justC, I already have a swift and it is alot of fun.
My rem700 VSSF in 220 swift has won me a few factory class benchrest matches. so much for the overbore claim, I agg'ed out at 1st place for 100-200yd 2 day shoot. However, I had to run the 50gr v-max to do it. I have some Euber 52gr I still need to test.
The 70-80gr pills you give your son, especially at those speeds from an AI, you may find he loses some deer. I would suggest a load with the barnes TSX or TSSX for better penetration. The problem with a 12 twist is, I don't think it will stabilize them eneough, even with the AI RPM factor. Unless we are talking 200yds or less, that is a different story. I have taken a deer at 220 yds with the swift loaded with 50gr v-max, BUT it was a neck shot.
sandwarrior,..I was just being polite[:D]0
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