Your JP is a racehorse. You'll be able to watch multiple bullet strikes in the scope. Yeah, you can put a long range scope on her (I'd do that with the .300), but the JP will shine at rapid fire inside 400. It's built for IPSC 3 gun.
Many ACOGS allow BAC (Bindon Aiming Concept) which means the bright internal dot/chevron/reticle (your choice) can be used both eyes open at very short distances and will allow you to align running game quickly. They use tritium and the reticles can be used at night. Optical clarity is excellent and the TA31 I listed has a built in bullet drop compensator for the 5.56. The "5" listed is the 500 yard aiming point.
The Accupoint is the variable power alternative.
http://www.trijicon.com/home.cfm