6.5X300W loads

Anyone have any loads for the 6.5X300W? I have 120 and 140gr Swift A-Frames and 130gr Sirocco Swift Bullets, 127LRX and 100or 120gr TTSX Barnes bullets as well as some others.
I have 91.5/93.5 and 94grs of US869 for the 127LRX. Also 78.8grs Retumbo that is too slow FPS.
I have 91.6 of US869 and 87.3grs RL33 for the 130gr Sirocco.
I have 88.5grs of US869 and 77grs Retumbo for the 140gr A-Frames.
Any other loads to try?

Is that 'W' an abbreviation for Winchester, or Weatherby? Hodgdon lists load data for the Weatherby variant.

Enigma said:

Is that 'W' an abbreviation for Winchester, or Weatherby? Hodgdon lists load data for the Weatherby variant.

Click to expand...

That would be the 6.5-300 Weatherby based on his loads.

The 91.5 gr of US869 and 78.8 gr of Retumbo with a Barnes 127 gr LRX bullet are exactly what is listed on Hodgdon's site for the maximum loads for that bullet, and they list that exact bullet. A 6.5-300 Winchester Magnum would be very similar to the .264 Winchester Magnum as the .264 and .300 Win Mags are both based off of the "standard length" 3.340" OAL .338 Win Mag. Hodgdon doesn't list the .264 with US869 but it does list a Retumbo load with the Hornady 129 grain soft-point, where it uses 67.5 grains of that powder.

I did a quick look and the only powder manufacturer that lists load data for the 6.5-300 Wby is Hodgdon, which the OP already found. Alliant and Western Powders do not list any data. Hornady and Lyman do not in their recent manuals, and I don't have a Speer or Lee manual so I can't tell you if they do or not. It's a very new round that was only introduced in 2016, and built on a proprietary case, so it's not surprising that there isn't much load data yet.

It's been quite a few years now but IIRC, the cartridge was originally the 6.5x300WWH (Weatherby/Wright. Hoyer) I read about it in either RIFLE or HANDLOADER Magazine and again, IIRC the article was by Jim Carmichel. You might try contacting Wolfe Publishing and see if you can pick up a copy of the magazine or at least a copy of the article.
Paul B.

Older Sierra manuals have data.