07-06-2011, 07:07 AM
stanc Wrote:Since the ballistics tables I ran a few days ago show a match to 7.62mm trajectory and wind drift with both 6.5mm 110gr and 6.8mm 120gr (and probably also with a hypothetical 7mm 130gr), I guess the next question is, what trade-off between cartridge weight and terminal effects is acceptable?
If minimum weight/recoil is desired, and minimum effectiveness is acceptable, go with 6.5mm. If maximum weight and recoil is okay in order to achieve maximum target effects, 7mm is the best choice. As with the SPC, 6.8mm would be in between 6.5mm and 7mm, both in weight, recoil, and terminal effects.
Unless priority is placed on really minimizing weight and recoil, 6.35mm and 6mm are probably not worth considering. The farther down we go from 7.62mm, the farther away we get from 7.62mm destructive ability.
I agree with all of that.