Re: Getting the Best Precision and Accuracy from Berger VLD bullets in Your Rifle
When you say that you "have not shot this rifle so well in 20 years" I am left with the impression that you are happy with the precision results. I'm not going to tell you not to tinker with the load but I will relay that if you are happy with the precision level of the load then increasing your success on a hunt once you've done this will come mostly from shooting your current set up in an effort to get better at range calling and more importantly, wind dopping.
You can gain far more with learning how to call the wind than you will by going from 1/2 MOA to 1/4 MOA (as an example). With any rifle I'd recommend to get sub 1 MOA (1/2 MOA is better) precision first (which it sounds like you have) and then stop tweaking the load and focus on accuracy (get better at dopping wind).
To strengthen your shooting skills go to the range.
To strengthen the shooting sports take a new shooter with you.