Check out codyadams build. Yours sounds like a great build. Dont let anyone tell you its a bad idea, not everyone has the same preferences. I have a 26" 300prc imp. and have a blank that will finish 20-22" to get chambered in the same caliber. Saying you should build a smaller caliber is going to be even slower than your initial target so go for it
My perfect Wyoming Mountain rifle build thread
After going through a few different rifles, trying to figure out my wants and needs for what I consider the perfect rifle for the way I hunt, I think this will finally be the one, so I'm starting another build thread. Some people won't like this rifle, and I don't care, not even a little...
www.longrangehunting.com