**Different Approaches **
I'm told that the folks at Remington foresaw their new caliber as being used primarily for varmint hunting and opted for a 1-in-12-inch twist, which would likely yield best accuracy with lighter, varmint-type bullets in the 75- to 90-grain range. The wise heads at Winchester, on the other hand, figured that while their new .243 would be good for varmints, it also had great potential for bigger game such as deer and pronghorn. Accordingly, they decided on a 1-in-10-inch twist as a compromise that would yield better accuracy with the 80- and 100-grain bullets they initially offered. Thus it became legend that the .243 Winchester succeeded because of its all-purpose designation and the .244 was doomed by comparison because it was good for varmints only. Frankly, I never bought into this hypothesis, and as the legend grew I became even more skeptical, firmly believing that the core reason for the success of the .243 Win. was the rifle in which it was initially offered: Winchester's immensely popular M-70. I've even stuck my neck out a few times with the suggestion that if the calibers had been reversed, with Winchester offering a .244-like caliber, 1-in-12-inch twist and all, it would still have been the winner because of the popularity of the rifle.