Spotters Swaro STR80 bullet trace

Zoom won’t dictate if you can see if or not. I can see it with my 10x sig binos. And 8x meopta binos. Position in relation to the shooter, environment, and just plain old knowing what to look for is what’s gonna make the biggest difference. Caliber also slightly comes into play. It’s a lot easier spotting a 308 than a .22LR or 223 etc.
To answer your question, seeing it on the Swaro is not a problem. I see it all day in my Henny Spotter 60 (20-60x).