Considering it is the dead of winter, you might save a few of these loads and try them at high noon in mid July. If they don't show any pressure signs in hot weather you are probably OK.

One thing Stubblejumper touched on is loose primer pockets. I haven't had this fall out of the sky on me with regular calibers like the 30-06 or .243; but it is a big issue with calibers like the 6MM-284 or any of the Ackley Improved series. The modern cases, which have very little body taper and a fairly steep shoulder angle, will show no pressure signs at a certain level - and you think you have a good working maximum load. When the time comes to reload them, however, the primer pockets are so loose you would need Super Glue to keep them in. Not good. One of those things you wish you would have checked out during the first few shots of the batch of 500 new cases . . . .