I "need" a new varmit rifle and I think a Tac 20 would suit just fine. I want the rifle for yotes and some groundhogs. Shots will be 20 yards to 400 yards. I would like to build the rifle as an ultralite calling rig and use a variable 4 x 14 or 3 x 10 approx. scope. I would really like it to have everything as light as possible except put a little weight where it would do some good in the barrel,maybe a #3) How would one go about doing this off of a Rem. 700 action,Titanium?) I'm not sure how to go about all this and in what order. I would like to do it as cheap as possible and add parts, trigger, barrel, stock, action trued) over time. I just want to get it chambered for now, and the trigger cleaned up to 2.5 pounds and see how it shoots with factory parts. Any guidance would be a big help.