Is this powder small enough granules that it will flow thru a powder measure easily? Trying to get away from IMR 4350 cause it tends to cause problems in my Bonanza measure. Thanks

I have NO idea what the V powders look like, other than they are extruded. I suspect they won't flow much better than the 4350s.

Your expectations may be completely different from mine, but the only extruded powders I can name that I know flow well (remember, that's a subjective thing!) through a measure are Benchmark and LT32. I suspect LT30 would, as well.

You haven't mentioned what cartridge you're loading, but I know that John Barsness has decided that he likes Ramshot Hunter in the .30-06 as much as H4350. I used some Hunter several years ago, but I couldn't even tell you what I did with it BUT I can tell you it flows through a measure like water.

N550 is much better thru a meter than IMR 4350. As Riverrider says it depends on your expectations but I have used a couple of N 500 series powder thru a Hornady meter

Never had luck with any of the Vihtavuori powders. Basically only use H1000, H4831, H4350, Varget, try to stay with the most temp stable.