I've been peripherally watching the YouTube riflemen talk about the latest and greatest rifle cartridges.
The topic that seems to be bantered around is heavy bullets in common bore sizes. When we increase the weight of a given bullet, it gets longer in the bore. That requires a faster twist to stabilize the bullet. Of course, with a long skinny bullet we get better ballistic coefficient. That translates into greater energy downrange.
I ran into this problem when I was working up loads for the .243 Winchester. The standard 1:10 barrel would stabilize bullets up to 100 grains, but when I started playing with those lovely long, skinny 107s, I started having stabilization problems. No problem, just back down to the 100 grain bullets and place your shot.
Other folks have talked about the demise of the .270 Winchester. Like this clip from Ron Spomer. It seems that the Western hunters wanted a faster twist in the .270. And, it appears that Browning is offering a 1:7.5 twist. That's fine, that's all well and good. The .270 Winchester is far from dead. There is no telling how many thousands of them are in closets, safes and gun racks across the country. The .270 Winchester ain't going anywhere.
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