flhtcuibyhd,
Personally I would give up velocity over accuracy any day to a point. I would much rather have the confidence in my loads, and my ability to deliver them to just where I wanted, over hoping is this the shot that will be the flier when I need that accuracy. If your shooting .5 MOA groups form the bench at 100yds, chances are they will open up to around 2.0 MOA groups when you fire them offhand simply due to heart beat, breathing, and your natural shake. However if you start out with 2.0 MOA groups of the bech, it will also multiply similarly when your fire offhand. So, IMO, might as well start of with the best you can and then worry about closeing it up once your standing, or laying sprawled out across the ground trying to calm your unsteady nerves.
Any modern bullet starting out at 2800fps or higher is going to get the job it is intended to do, done when it hits home. I shoot quite a few calibers including the .270 Win. and to be quite honest the most accurate load I have ever shot from mine was 46.5grs of IMR-3031 which allowed just over 2750fps from my rifle. It was developed for my mom before she quit hunting back in her mid 60's. Myself and daughter used it well past the time she quite using it and I still have close to a half dozen boxes of it loaded.
By the same token I also like at times to work up to a higher velocity depending on the intended use. I like to reach out across a field once in a while, and drop the hammer of Thor down on a feral hog, or wised up coyote that won't come in to a call. In times like this I want high velocity and accuracy at extreme ranges. This is the realm of the slower powders like H4831, RL-22, Ramshot Hunter and Magnum. If you have a need for speed such as reaching out a bit, and delivering an obscene long distance call on a predator or pest, then by all means give it your all. If not however, why punish yourself and your rifle with the higher pressure loads.