Posted by MarkB_MI on November 12, 2010 at 14:36:02 from (166.203.160.129):
In Reply to: .223 or .22-250? posted by in-too-deep on November 12, 2010 at 10:38:29:
This is a difficult call. Twenty years ago there would be no question: .22-250 without a second thought. But the .223 has evolved a great deal since then, primarily because of the M16A2 and its use in highpower competition. When the military decided it needed to shoot heavier bullets in the M16, they increased its rifling twist to (I think) 1:8. The commercial AR and bolt action rifles followed suit, with the result that many new rifles chambered in .223 have twists of 1:8 or even 1:7. But .22-250 rifles typically have twists of 1:12 or 1:14. The result is that a typical .22-250 may have trouble shooting heavy bullets that a .223 can handle. On the other hand, light bullets in a .22-250 with a fast twist are likely to come apart in flight.
Now this isn't much of a consideration if you're planning to stick with factory ammo. But if you're a handloader, it's something to think about. I looked at the Remington site, and the M700 in .223 has a 1:12 twist versus the 1:14 twist of the .22-250, so it isn't such big difference for the Remington. Savage, on the other hand, goes with a 1:9 for the .223 and 1:12 for .22-250. That is a huge difference if you intend to shoot bullets much heavier than 60 grains.
Personally, I still think the .22-250 is one of the finest cartridges ever. It's the fastest .22 you can get that isn't hard on barrels. It is capable of outstanding accuracy with handloads. Most importantly, it literally vaporizes any varmint it hits. What's the point of shooting prairie dogs and woodchucks if they don't EXPLODE?
By the way, I love my .22-250, but I just went the other way this year and got a T-C Contender rifle barreled in .17 Fireball.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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