What do you know about the .270 WSM?

[XC700116]

Just as info the load data you are showing there is conservative to the point of laughable. Probably due to it being centered around Barnes solid copper bullets that sacrifice A LOT of case capacity due to having a much longer bullet as compared to a lead bullet of same weight.

Federal lists their factory loadings at 3060 fps with 150 gr bullets, and 3300 with 130's. I've pushed the 130's past 3400 without pressure issues and the load of choice in my Rifle was a 140gr accubond running at just over 3200.

Right now my 7-300 wsm (same exact case, necked up to 7mm) is pushing 168 gr vld's at 3120.

I've noticed a trend with load data for the wsm's being focused around faster burn rates, (h4350, h4831, RL19, etc) which IMO is a big mistake it burns faster and hotter with a pretty heavily overbore cartridge, and is therefore leaving velocity on the table and being harder on the throat of the barrel. Look to powders that are slower burn rates like h1000 and you'll get higher velocity and better barrel life. You'll also notice you will most likely end up with a charge weight a bit past max in the listed data well before you see signs of pressure.