I'm looking for a load ( I always work up to it, no fear) with a temp stable powder that gets and honest 3200fps with the 175 LRX? I normally hunt around freezing, maybe a bit cooler. I used R23 but only got 3100 or so. I have an assortment of Magnum. R17, R16, H4831, H4350, IMR 7828, and so forth. I have some rounds to try with IMR 7828, anyone like this powder for that? My plan is to get all the "oomph" I can from this combo. But if the IMR powders are stable enough (in the magnum) I'll set up for one of them. I have a new Leupold 2.5x8 with the dial em in turret I will set up for this one load. (I decided to shoot all the oddball weights on my shelf/styles with my 30-06.