The Firing Line Forums - View Single Post - Some full-power 9x19 data (124/VV-3N37)

WESHOOT2 · September 29, 2002, 09:36 AM

IMNSHO consistency, IOW, for each 'X' of powder you get 'Y' of velocity.
"So I add .2g and get 30fps, and I add another .2g and get 32fps so I add another .2g and I get 28fps and I add another .2g and I get 31fps....."
And then I add another .2g and I get 7fps, or I get -33fps or 88fps......uh-oh.......

But JUST BECAUSE I've "mapped" a powder/bullet/gun does NOT mean I can trust guessing, er, "mapping"; testing required.

September 29, 2002, 09:36 AM	#12
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,324	MAPPING IMNSHO consistency, IOW, for each 'X' of powder you get 'Y' of velocity. "So I add .2g and get 30fps, and I add another .2g and get 32fps so I add another .2g and I get 28fps and I add another .2g and I get 31fps....." And then I add another .2g and I get 7fps, or I get -33fps or 88fps......uh-oh....... But JUST BECAUSE I've "mapped" a powder/bullet/gun does NOT mean I can trust guessing, er, "mapping"; testing required. __________________ . "all my ammo is mostly retired factory ammo"