Hey guys, I have a question, about scopes!

[VASCAR2]

I decided to compare the 308 ballistic trajectory with Federal Gold Medal Match and the 123 grain 6.5 Grendel using either the A-Max/ELD-M or 123 grain SMK. The trajectories are very similar and the 308 hold overs calculated out to 800 yards are very close to a 123 grain 6.5 Grendel match bullet.

I used the Hornady standard ballistic calculator to achieve this data. I found the velocity for the Federal 168 grain Gold Medal Match online out of a 20” barrel. I used 2.75” over the bore at sea level in getting this data. G7 data might be more accurate but both 308/6.5G are very similar. For crude combat hold on steel silhouette targets the ACSS 308 reticle might be a better option than 5.56 reticle.

I didn’t calculate the wind drift between the 308 and 6.5 Grendel but basically wind is dealt with by the skill of the shooter.

308 Winchester 168 grain Federal GMM BC .462 velocity 2565 FPS 20” barrel

6.5 Grendel 123 grain A-Max .510 BC 2500 FPS 20” barrel




100 yards 308 2379 FPS
100 yards 6.5 G 2333 FPS

200 yards 308 2200 FPS T -3.4”
200 yards 6.5G 2173 FPS T -3.7”

300 yards 308 2029 FPS T -14.1”
300 yards 6.5G 2019 FPS T -14.7”

400 yards 308 1867 FPS T -33.2”
400 yards 6.5G 1872 FPS T -34.3”

500 yards 308 1713 FPS T -62.2”
500 yards 6.5G 1732 FPS T -63.8”

600 yards 308 1570 FPS T-103.2”
600 yards 6.5G 1601 FPS T -105”

700 yards 308 1438 FPS T -158.3”
700 yards 6.5G 1478 FPS T -159.8”

800 yards 308 1319 FPS T -230.3”
800 yards 6.5G 1366 FPS T -230.4”