I've used 760 in the 243 more than all others combined, primarily because I reload for 4 of them. Just about every load I end up using is either max or slightly above, and I've never noticed any pressure concerns at all. I chronograph every load as well, just to make sure they aren't "too fast", if there can be such a thing. One particular load of mine is for the 85 grain Sierra HP, and my load for that is 45.5 grains, and according to my reloading manuals, that's over max. Yet, it shoots extremely good in every 243 I've ever tried it in, and exhibits no pressure signs in any of them. It's an easy powder to meter, and it works for me with a variety of bullet weights in the 243. Now, I don't shoot a bunch, and most of that is in cooler weather, so you can take that for what it's worth. But, I think that in this day and age of such a variety of powders available to us reloaders, good old W760 is hard to beat.
