Yeah, a couple of clicks on the HP calculator. Finding out what the bullet speed of a .45 took longer, and Dub Jett's engines are the most powerful sport engines on the planet (worst case scenario). Most RC engines fall far short of a Jett in terms of power and rpm, so it is not even close.

The slowest bullet will be 40% faster than the prop tips on a typical RC engine, and the fastest .45 about double the speed.

While APC props are certainly as sharp as a knife, well..............