Specter1975,
I'll test and let you know the velocity from a 14.5. We only make an FMJ in remanufactured. Our remanufactured is very good, but because I believe in Murphy, and do my best to avoid him, I recommend new ammo over reman for any defensive (or offensive) applications. Our quality controls are the same on both, the difference is any remanufactured (or reloaded ) ammunition uses brass that has been work hardened(if ever so slightly) by the process of being loaded,fired and resized. That increases the chance of a case separation. Case separations are normally a nuisance in training or informal shooting, but any malfunction is serious deal if someone is shooting at you. Reports to us on case separations are rare, but I have seen them. I don't ever recall seeing a 223/556 case separation with our new ammo.This is a long winded way of saying that while I suspect the Hornady 55 FMJ jacket probably does have a lower fragmentation threshold, the point is probably moot, because I recommend using the best ammo you can get for intense interpersonal conflict resolution, even though it costs more. That means new ammo.
Our reman is good ammo,and frankly I wouldn't even think twice about it if our reman ammo is what I had in gun at the moment I had to defend my life, but when you are preplanning for any such situations, I'd buy the best "new" ammo you can find. Use the reman for training and recreational use. Jeff