I'm on my 3rd 220 Swift since approx 1977. The first 2 loved 4064, this one has about as much distaste for it as I do. My go to load in this one has always been 50gr Vmax or NBT's over 41-42gr of WW760 (which is the same as H414 as far as I can tell).
So, long story short, I tried working up a load for it with the R-17. Started at 38gr and worked up to 39.5gr with Seirra 52gr Matchkings. It shot a REALLY nice group at 39.5gr, there was obviously less pressure than the 760 load, very clean burning too. Definately potential with this powder in the Swift. Just need to find some time to dial in the seating depth, neck tension and primer combination that it likes. (And maybe a leeeetttllle more powder too).

WD