Pretty much!
I had 3 lb rocket built from mailing tubes, 2" ID 2.25 OD with 1/4" plywood fins and an epoxy coated foam nose cone. I adjusted the sim parameter to match the altimeter data from the first flight on an I1299N and it pulled 83G, hit 563 mph at 134 ft altitude at motor burnout. It went exactly 4000 ft per the altimeter.
I had called the rocket "The Disappearing Rocket" that day and used and old thermite/fuse igniter. When the LCO said zero, there was a flash of fire and some smoke near the clips and then nothing as the fuse burning inside the plastic tube to the pyrogen. Those that thought it was a mis-fire and relaxed during the second or so it took the fuse to lite the pyrogen missed the whole flight. If you weren't waiting for it, it literally disappeared on you.
The second time I flew an I1299N in that rocket, it ripped the rail guide off and it got 4,200 ft.
That rocket lawndarted on a much smaller motor, but I have an other I1299N just waiting for another rocket. Warp 9 is a great propellant!