Nice rifle and nice printing at 100yds. The fun part will come when shooting 1000yds, if you have access to such a range (if you have access to a range with a Kongsberg target system you can learn more in a few hours than some people in a year). It looks like you have an Atlas bipod, which is good because the legs pivot back and forth (unlike a Harris) and will help you follow vapor trails and hits. I shoot 175 w/ 45 Varget and 190 SMKs with 44 Varget out of a 22 inch barrel. The sweet spot is finding whatever load the rifle tunes to while also producing a retained velocity over the speed of sound at 1000yds (the 42.5 Varget might not be enough with a 190). Spend some time with the ballistic software and interestingly the 190 SMK does a bit better than then 175, and bucks the wind a bit better (no, it's not flatter though); your 1 in 10 twist barrel is perfect. Print the dope out in 5 yard increments and dial for gold. It's a real trip when you put everything together. The final frontier is reading the wind.
