Oldtrader3
Ammo Smith
- Nov 6, 2009
- 8,406
- 6
The .257 equivalent to a 100 grain .243 bullet is a 115 gr .257 bullet, both at 3000 fps! IMHO, comparing a 100 gr .243 to a 100 gr .257 with a minus 200 fps difference in .250 muzzle velocity and loss of .033 sectional density is not a comparison at all and is not apples to apples. You would have to compare a hot loaded 115 grain .257 bullet to equal a 100 gr .243 bullet, both at 3000 fps to be apples to apples and sectional density to sectional density and then compare at 265 yards. Then you have a fair horse race.