Legends of Greyhawk - Issues and Support Thread

I just ran "Darkness in Nulb" last night and one player gave feedback about how I ran Bandit Captain, specifically multiattack with pistol

This is the stat block in question from the Bandit Captain
Pistol. Ranged Attack Roll: +5, range 30/90 ft. Hit: 8 (1d10 + 3) Piercing damage.

Considering two attacks, with no penalty to reload, pistols have slightly higher damage than longbow. The question from the player is, "Shouldn't there be a restriction on reloading or firing a ranged 1d10 weapon, more than once per round?"

As a DM and player myself, I was able to suspend my disbelief of muskets and funnels with gunpowder for the magic of an equivalent damage expression Eldritch Blast

Compared to Xvart Warlock of Raxivort, yes that's 5.0E but the damage expression is very close to the same, two attacks with multiattack, melee or ranged or any combination of the two and the ranged attack is 1d10+2

This might not even be the correct thread for LoG combat stats questions. I guess I was alright about taking down two players in one round with high rolls on Pistol. What do others think about this?