Thread: 6.5x55 velocity

Hey Rusl, great you have access to a decent range. 2500fps would be commensurate with 41gr of 2209 I would think.
I would do as shooternz recommends and start at known data book COAL and work it up.
Measuring chamber length by closing a inert case in will give a few thou jammed in the lands reading and also I found I needed to repeat the measurement several times to get a 'true read'
I think I was at 45.5gr 2209 with 143eld. Running 120gr now.