Re: Rem 308 5 R & 200gr Accubond
I assume you mean you can only test out to 200 yards. Is that correct?
Unfortunately, there isn't data for this bullet from Bryan Litz. Looking at the 180 gr. Accubond and extrapolating a little from that and the 165 gr. Accubond, I'd say maybe. I used a G7 BC of .260 and a projectile length of 1.5" then tried again with .280 and in both cases ended up with a stability factor of 1.47. That's not bad. That bullet will maintain velocity fairly well, so probably it will remain stable as far out as 800-1000 yards, depending on altitude.
Check out the thread on 208-gr. A-Max. That may give you some insight.