I also lucked into several boxes of the old Nosler 225 grain BTs. They are, by far, the most accurate bullet in my Whelen. My most accurate load has been 60 grains of RL15, Federal match primers, in a Nosler case for 2730fps in a 24" tube. This load is over book max. Approach with caution. I was surprised at how tough these bullets are. I sectioned one and found 60% of the bullet is jacket.