Re: 175 SMK in 7-08 ?
They work very well. I ran this combo with R 17, out of a 22" barrel I was able to get to 2750, it was a warm load for my rifle, I later backed it down to 2685, it shot very well there and didn't have pressure problems after a string of 10 or so.
Varget would yield around 2620 and was very accurate as well.
If I were you I would start with H4350, you should get good velocity, without having the temp stability issues of R17.
Use Litz's G7 data of 0.327 as it matches much better than Sierra's reported bc.