Re: Harrell Users How is your Accuracy with H4350&Var?
It's been a bit since I used mine for H4350. My (failing) memory is that if I was very consistent in operation, I kept the variation to .2 either direction.
I use a thrown charge of RL22 in 6.5-.284 and am showing 1/3-MOA at 400 yards. I can live with that.
Agreed they're using ball powders mostly, but the benchrest crowd throws their charges all the time.
On a couple occasions, I ran tests weighing each charge and throwing the charges normally. Each time, over an Oehler chronograph, the standard deviation was less with the thrown charges. 'Fraid I can't remember what powders I used, but I think IMR4895 was one since I was shooting .308 in highpower matches at the time.
In short, my suggestion would be to run your own test with weighed and thrown charges to see if there was a statistically significant difference.
Cheers,
Richard