RottenRonnie
First of all, you have taken the absolute best first step – joining this forum!

Read it as frequently as you can, and you will not regret it. But beware, as what I say under my signature, below, is very true and sometimes frustrating.
Late in 2013 I started F-T/R by shooting one match with a DPMS 308 Panther Long Range rifle, which allowed me to score 280-8x (30 rounds), and I was hooked. I bought a Savage 12 F-T/R, just as you did, made a stock extension to suit me, installed a Karsten Model A adjustable cheek-piece, a Nightforce NXS 12-42x56 .125 MOA NP-R2, a Centershot bipod (later a Duplin), and was good to go.
I shot several more matches like that, and it was fine, but the angle of the stock contacting the rear bag bothered me as it required more realigning that I cared to do after each shot. So the next modification was to level the bottom of the rear portion of the stock. I believe these may be available commercially as ‘rear bag-riders’, but I decided to roll my own. The bag-rider I made works just fine, the rifle tracks better, and corrections between shots are easier. Since I use the Duplin bipod (also true of the Centershot), I can make any required final elevation tweaking with a minimal bag squeeze.
Late last year, after about one year shooting the Savage and thoroughly enjoying it, the (red)blade of the AccuTrigger started bothering me. I don’t know why, but it started distracting my trigger pull. Anyway, after a lot of searching, I decided to replace the AccuTrigger with a Sharp Shooter Supply competition trigger. I did the replacement myself, and although not difficult, it was a bit tedious; especially the adjustment so it would not slam-fire. I had the AccuTrigger adjusted to about 14-oz pull, and ended up adjusting the SSS comp trigger to about 10-12 oz, which is just fine for me. I posted a thread on this forum of the trigger replacement.
I shot my last match last year with the new trigger and did OK; 1170-42x, which was good enough for the Master classification, and was just 6 points shy of High Master.
BTW, I use Lapua brass with just simple full-length resizing and length trimming, 168-gr SMK, and 45 grains of Varget.
I will probably shoot a couple more matches with the Savage, and then hope to start using a new rifle, which should be ready in a month or two.
Good luck!
Nando