I didnt have much time but went out and shot 5 shots to sight in my Tikka CTR 308 with the SWFA 5x20x50(mil/mil) The first shot 2 shots were barely on paper. I made adjustment and here is a pic of shots 3,4,5. This is at 100 yards with Hornady 155 gr A Max.
Ive never reloaded. I started with the lighter load because my last 308 shot the 155 grain really well. Over the next several weeks I will try several different rounds to see if anything performs better.