.... accurate as 177 steel bbs at ranges up to 10 yards?

What sort of velocity do they produce?

Would they knock down a Walther duck target at 10 yards.

I only use these types of guns for shooting at paper, and since the plastic bbs are less dangerous projectiles, I wondered if they might be a better bet for indoor shooting.

Please note that I am only asking about the CO2 powered airsoft pistols which give higher velocity, not the green gas ones.

Would appreciate your advice.