As far as REAL info on that cartridge, I can't help you.
What I can tell you is based off of Pressure testing in a few other cartridges.
the kicker in your post is the bit about "I'm eager to see what it's capable of". Specifically what do you mean? If you are talking absolute possibilities regardless of pressures, then you can get a few hundred fps. If you are talking about staying within the parent cartridges SAAMI spec, then the gain will be very minimal.
What most people either don't know or ignore, is that pressure and velocity are tied rather closely.
Those that use a Chrony, typically start at least in the middle of the load data; and if things are fast make the false claim of "hey! my super-awesome barrel is fast!!"; not true.
Remember that book data IS pressure tested, in SAAMI minimum spec testing equipment. Production firearms are looser tollerances than that, so you will have more gas by-pass and lower velocities. Also NO data outside of the now very old A-Squared manual, listes powder/primer lots tested. All powder tells you to drop 10% when switching lots... That means if you don't start low and chrono going up, you don't know where your lot of powder falls, compared to tested; nor how much slower your barrel actually is.
I hope you like the gun, and tell us how it performs for you!
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