It's true you can get some very good velocities out of Wby cals., useing Wby brass. The reason is, Wby brass is thinner and has more volume. (it's also softer) I've made many Wby cases out of other brands of brass, and never could get that same volume.

Here's the problem. Wby brass when pushed to the limit won't last too long. The first thing that happens is the primer pockets start to loosen up untill they will no longer even hold a primer in. For me, this makes Wby cals very expensive to shoot, unless you are happy with "less" than MAX loads in them. In that case they are no better than non Wby cals..

I've owned several Wby cals and guns over the years. I've also taken a fair amount of game with them, and to me the little extra velocity they give isn't worth the price you have to pay to get it.

I still have a 240 WBY magnum that P.O.Ackley built for me on a Remington action. I don't use it much today, but it does shoot very well, and i have taken Sitka Black Tail deer with it.

BTW, i spent quite a bit of time in Ackleys shop with him long before he passed away. He was a great guy with many interesting stories to tell!!