I have no idea, as the BC is unknown; but if its only 1.00 as a G-1 then we'll be looking at subsonic transition at around 2,500 yards acording to the JBM calculator that I just ran it on. The inputs that I used were BC of 1.00, weight of 300 grains, altitude 2,200 ft, temp 75 degerees, humidity 20%, pressure 29.92 in Hg., velocity 2,950 fps.
The other numbers are just scary low as far as wind drift and elevation to reach distances...but I'll save the speculation until after I get a chance to test this rig.
Really rough I know, but its using the velocity that I am planning on and the rest are accurate paramaters from the range where it will be tested. Obviously, the range is reduced at seal elvel.
One can safely say Dayum...if that turns out to be accurate.
One thing I can tell you. I can and will get some good data from my home range at Boulder Rifle and pistol club. If she is shooting well, I'll get muzzel as well as some intermediate velocities from 500 meters and possibly 900 yards; plus the required elevation in MOA from my 100 yard zero to each. We can back out some BC information from that information.
Steve...email me and we talk about dates for a desert visit when this is up and running...maybe you bring your .375 and we'll hammer some steel out to 3,000 ..
Jeff