The only problem i have with the PRs is i cant get them to shoot very well much past 1950fps. Several guys on Dougs board even tried in faster twist barrels and almost no one could shoot them past 2100fps with good long range accuracy. I really wish they sold the duplex sabots loose though. They would be fun to experiment with if you could get them moving 2400fps+ and a jacketed 180-200gr .357 or .358. Soft lead boat tails will deform in flight at that speed and even flow into the void between the sabot petals.

Even PRs web site lists 120gr of Pyro and 100gr of T7 on the best groups. Well, that is pretty close to the speeds ive seen them shoot good. A 50x40 200gr SST might shoot nearly as flat at a bit more velocity and have been way more accurate for me with heavier loads.