Quote History Quoted:
I'd love to see a master chart of peoples barrel lengths, twists, brands, ammo used, etc. Especially for those with non-standard lengths like my 12.5, 11.5's, 13.7's, etc. Sounds like a post for the ammo forum...
View Quote
Barrel length M855 bullet velocity
210 mm (8.3 in) 723 m/s (2,372 ft/s)
240 mm (9.4 in) 764 m/s (2,507 ft/s)
270 mm (10.6 in) 796 m/s (2,612 ft/s)
300 mm (11.8 in) 825 m/s (2,707 ft/s)
330 mm (13.0 in) 843 m/s (2,766 ft/s)
360 mm (14.2 in) 866 m/s (2,841 ft/s)
390 mm (15.4 in) 878 m/s (2,881 ft/s)
420 mm (16.5 in) 892 m/s (2,927 ft/s)
450 mm (17.7 in) 906 m/s (2,972 ft/s)
480 mm (18.9 in) 915 m/s (3,002 ft/s)
508 mm (20.0 in) 922 m/s (3,025 ft/s)
Use the above info to plug into
This
I've used this particular calculator with great success in reloading/shooting for various distances with a .260 Rem bolt gun, even without a chronograph. Familiarize yourself with it and if you have questions or run into problems just ask and we'll work through them.