Re: 200 gr Accobond out of a 300 wsm
I shot the 200gr NAB out of my blued T3 Win Mag using Retumbo with good accuracy at 2650 fps (slow but accurate). I'm now using Ramshot Magnum with the 200gr NAB in my Super Light Win Mag and it shoots great too. 1-in-11 seems to work just fine.
ETA: OOPS! Old thread! Oh well, this might be useful info for someone running the search engine. Back to your normally scheduled program...