No just sometimes.
Generally it's not easy to get any more than 1100+ fps with airguns and most shoot well using slugs in the 850 - 1000 fps range.
BC's vary quite a bit just like they do in firearms world.
For example;
A high G1 BC for a heavy per caliber pellet is .06 so it's much less than even a 17 cal firearm bullet.
Almost all 22 cal airgun slugs are quite a bit less than a 40gr 22rf bullet, like low .1's BC, with a few exceptions like some Altaros slugs or maybe some cast ones.
Some heavier .257 cast slugs can have a of .2 or so.
Then if getting into longer slugs in larger calibers the BC's go up more. I know a guy that has a custom 7mm and 30 cal caliber using
105gr 7mm, G1 BC=0.28
171gr .308, G1 BC=0.42
These are longer slugs requiring faster twist rates.
I'd go straight to 45 caliber because of the knockdown power for deer as well as the wide variety of projectiles out there. The BC's won't be the highest but still pretty good and lot's of energy.
I'm thinking about buying the AGT Netvor 45 cal when it comes out because this company builds good reliable airguns.