I have over 2000 in the B-100. If you are operating the -6 series you will true at 240 to 245 depending on how well your aircraft is rigged. If you have -10's True will be 265 to 280 depending on several factors. The weakest point on the aircraft is the lower Pressurization Ratio at 3.8 psi. Best altitudes 16 through 23. 24 works if you have great winds. Super range. If you want to know more let me know..