Spindrift
Well-Known Member
Some calculations in Berger’s stability calculator, for the Lee 309-230
1:8 ROT: comfortable stability from subsonic, and up
1:10 ROT: comfortable stability from subsonic, and up (surprising. I’m sceptical).
1:11 ROT: marginal stability at subsonic muzzle velocity. Comfortable stability from 1280fps
1:12ROT: comfortable stab8lity from 2070fps (!)
These are only theoretical calculations.
Glaciers; sounds very promising!
When I plot your NOE 247grs bullet in the stability calculator, using the estimated BC from the NOE website, I get «comfortable stability» from subsonic muzzle velocity. Should work fine!
1:8 ROT: comfortable stability from subsonic, and up
1:10 ROT: comfortable stability from subsonic, and up (surprising. I’m sceptical).
1:11 ROT: marginal stability at subsonic muzzle velocity. Comfortable stability from 1280fps
1:12ROT: comfortable stab8lity from 2070fps (!)
These are only theoretical calculations.
Glaciers; sounds very promising!
When I plot your NOE 247grs bullet in the stability calculator, using the estimated BC from the NOE website, I get «comfortable stability» from subsonic muzzle velocity. Should work fine!