Hmm, what "pro's" would you be referring to?
I look at the equipment lists at national level benchrest matches and F-class matches and March seems to be on at least half of the top ten every time.
I have talked to "Benchrest Hall of Fame" shooters who've tried **** near everything on the market and swear by them.
Including:
The late Tony Boyer
Wayne Campbell
Lester Bruno
Gene Buckys
Jack Neary
The late Walt Berger
Jim Borden
Thomas "Speedy" Gonzales
These guys are leaders in the shooting industry, have used **** near everything on the market in the last 50 years, and these guys endorce or use them. So would be curious to know who you consider to be a "Pro"?