I've had three .264s: a post-'64 Model 70 with 26" barrel, a custom Sako with 24" barrel, and a Remington Sendero with 26" heavy barrel. None were extremely accurate, but the Sako was probably best. The original '60s advertised ballistics depicting a 140 grain bullet at 3200 fps is very difficult to achieve safely, though perhaps it's possible or almost possible with some of the newer very slow-burning powders. I never was able to get there with any 140 grain bullet.

I was intrigued by this cartridge until I had first hand experience with it and did a lot of load development. I much prefer a .270 Winchester. From a practical field perspective it will pretty much do all a .264 Winchester Magnum will and it doesn't need a 26" barrel to do it.