blackaj, did you ever say what action you were planning on using? Maybe I missed it. If you're planning on using a Remington short action you should reconsider. Like a few people have stated above, the Rem case is too long for a 2.8" mag and action, especially if you're looking at 100+ grain bullets.
I had a 6mm Ackley with a 10 twist barrel, so I mostly shot 75 and 87 vmaxs, it was awesome on rock Chuck's and prairie dogs but it would never shoot anything heavier. I ended up with a 243 with a 7.5 twist barrel. In my opinion the straight 243 is a way better option in a standard short action, the 6mm Creedmoor or 6x47 might be even better. I think people way underestimate how important overall length is and over estimate velocity. With the scopes and range finders that we have now days who cares if you need a few more clicks at a 1000 yards?
Let's say you are running a Rem action, that means you're OAL is limited to 2.8", if you're running a 115 how much case capacity does the base of the bullet take up? If you're using a shorter case the usable volume might actually be the same as the Rem case. Now if you're using an action that allows for longer OAL you can disregard all of this.
One other point. The 6mm Rem and especially the Ackley version are not easy on barrels, I used up half of the barrel life on mine fire forming cases and doing load development, I would never do an Ackley again unless it was something that you could buy formed brass for (280 Ackley). Again, I don't think the extra velocity is worth the work and the barrel life. Just my two cents take it for what it's worth.