SteveM-- I was trying Varget with the 30 gr. bullets in the .17 Remington because I though that Varget "should" work better with the heavier bullets. However, it didn't work that way for me either. I felt I should be able to get at least 3,800+ fps from the 30 gr. bullets, but Varget was showing small signs of excessive pressure at the 3,665 fps level. I did some reading on the 500 series VVN powders and convinced myself to buy 2 pounds of N-540. The hype was that you could get up to 10% more power (velocity) without dangerously increased pressures with the 500 series powders. That seems to have been borne out since my load for the 30 gr. Starke HP bullets leaves the muzzle at 3,900 fps. Now, how you can get more power (velocity) without increased pressure is beyond my power of comprehension, but I'm not going to try to figure that out. It just seems to work.
Like you, I have found that Varget works just great with my 20 gr. V-Max bullets!! The load I am shooting with that bullet now is usually giving me about 4,000 fps. Sometimes that same load gets up to 4,050+ fps??? The point of impact doesn't seem to change with the 50 fps velocity variation though, so I'm happy.
The load I use for the 25 gr. Hornady hollow point bullets in my Lilja barreled .17 Remington is 23.0 gr. of Varget. I'm not getting as much velocity as I could with a heavier charge, but I am getting some very nice sub .4" groups and the prairie dogs are compalining loudly about that accuracy.
I don't shoot the 20 gr. V-Max in my Pac-Nor barreled .17 Remington, but I do shoot the 25 gr. Hornady HP. I use 23.2 gr. of H4895 for that bullet and get about 4,055 fps muzzle velocity and nice itty bitty groups.
At the present time I am using WW760 with my 27.8 gr. Hammett BT HP bullets in the Pac-Nor barreled .17 Remington with good success. I'm about out of the WW760 and when I run out of it, I'm going to try to work up a load of N-540 for those 27.8 gr. bullets. WW760 is the ONLY powder I have used with these 27.8 gr. bullets. I only tried three different powder weight charges--25.5, 25.8 and 26.0 and quickly decided that 25.8 was excellent for this bullet in my rifle. Muzzle velocity is running right around 3,816 fps.