Agreed with NM448. I have pushed bullets as fast as 3250 per second with big bullets in larger cartridges, I watch for the warning signs and that's run through a semi-auto! 160 gr Barnes X to be specific.
As far as, "have you chrono'd those puppies?" YOU SHOULD. Most of us dont have access to pressure chambers and the Chrono is the best we can do. Along with the known pressure signs, work it on up and go from there.
Personally, never heard of that outfit and wouldn't buy without credible sources. They may be a great outfit, but not at my expense!
REM7600 (35 years reloading)