Despite the claims for GoreTex
et al., there is no garment that will keep out hard rain without trapping sweat. Most of the Filson stuff will get you wet even on a dry day, if you hunt hard enough to raise a sweat. If you insist on vigorous hunting in all weathers, you
will get wet. Get used to it.
I've come to prefer fleece or tightly woven cotton garments which repel light rain, get wet in heavier rain, but breathe well and eventually dry out. Besides, you get to make your own steam bath by sitting near the stove when you get back to camp.