Musket physical damage?

[bot_pet]

Anyone knows whether muskets and machine guns are effected by the Pyhsical Attack stat? I'm asking because the manual states they do not, while there are in game green muskets/machine guns that have the +Physical Attack bonus. I'm assuming item bonuses can't be useless because I haven't seen one yet (e.g. staff with +STR)

And if I got this right, weapons effected by increasing STR : Swords, blunts, axes, staves, electric shockers and bows
And those that don't : Buzzsaws, crossbows, muskets, pistols and machine guns
Is that correct?