[Riposte1]

Dom;

I cannot speak from experience so take this with a grain of salt.

Unless I miss my guess we are not talking "mag" here. The cartridage I have encountered is the 6.5 (.264") X .284 Winchester.

A couple of acquaintences do quite well in 1,000 yard competition. They have used this cartridge but I think they also use the 6.5/.308 and I am not sure which they prefer.

I do have a 6.5/06 (.264 based on the 30-06 case). That should have about the same expansion ratio (bore volume to case capacity) as the cartridge you mention. Personally I find it about as efficient as a 6.5 can get. I also own a .264 Win. Mag which many consider "overbore". They are probably right. While I can squeeze just a tough more velocity out of that rifle than my 6.5/06, both with 24" barrels, it is with a *lot* more powder.

These days I dont care much for that extra few FPS. In fact I have 3 .260 Remingtons (in various rifles) which I find to be a fine G.P. cartridge if we limit our game to deer sized critters (W.D.M. Bell, I aint :-) ).

At any rate 6.5 X .284 sounds like a fine cartridge to me! Finding the brass would be the only tough part of the equation.

Good luck!

Riposte