I have not gotten to it yet but I am going to give it a try in the 257 Weatherby, the data looks good and where I think it will come on is with 128-130 grain loads even though there is no data for them.
LRT should work in the 264 at least with the heavier bullets. It is in the R33, Retumbo and US 869 burn rate range and these all can have uses in the 264. I would start with the Weatherby 120 grain data and proceed cautiously especially if your 264 does not have much or any free bore. The larger caliber may off set the freebore issue some but no way of knowing with out pressure data. I think there is data for the 26 Nosler but this may not help much except as a point of comparison. I would also think it would do well with the 6.5x300 Weatherby. The velocities in the 6.5x284 are surprising, I guess the density is what makes it work.
