Yeah that sounds about right. I mean, I forget offhand but someone did some math on the quicksilver scene where he evacuates a building in mid explosion getting dozens of people out while everything is bursting into a giant pressure wave and fireball. I just looked it up and it worked out to something absurd like mach 11,811 or about 1% of light speed. Im not sure if thats still fast enough to cause the reaction from the linked comic, but I am sure that without the speed force he should still totally destroy everything around him as he moved. Not too mention himself. Kinda making bullet moving moot.