I've never owned/shot a 300 Weatherby, but several 300 win Mags and a couple of 300 RUMs. I have read where the 300 BEE could do 3200/180 as easily as the 300 RUM. I had one 26" 300 RUM that actually did a tad over 3200/180PT with Nosler factory ammo. The only handload I ever worked up/used in the other RUM, is a 26" Shilen barreled custom I had made for my SIL. It shoots the 200 NAB pretty close to 3100 with Retumbo.
I could easily get 3100 with 24" 300 winMag/180 xbt with R22 and almost as fast with H4831. Personally, I've never had a problem with the short neck of any cartridge. Is this an issue with "runout" with the longer, heavier bullets? Just curious.
BTW, I really liked the Federal High Energy 30-06 ammo. I got a consistent 2970 fps/180PT from a 23" Douglas. Accuracy was a solid 1" or a bit less. The Hornady Light Magnum/180 got 2910fps. Then, they both disappeared. The "Superformance" is no great shakes, nowhere near the LM speeds. At the time, I clocked a few 300WM (24") 180 loads that were right at 2950fps, average. Why did they discontinue these loads you reckon? I know those speeds are not "needed" for the Premium bullets to work well, but heck, I hate living only by "what is needed", at least in the World of Riflemen Loonyville!
