About how much rifle and shotgun ammo?
Is tactical similar to production?
It really completely depends on the match---each time, the stages are different.
I personally normally bring about 300 rifle, 300 pistol, and 200 shotgun shells. I then bring almost all of it home. Both of the last two Multigun matches (total) required under 140 rounds. That's 140 between all three guns.
....which isn't the same thing as saying people only shot that many.
The pistol part of the Multigun Tactical division is similar to USPSA Limited pistol.
Tactical: pistol straight from USPSA Limited division (but minor counts the same as major), iron sights on pistol and shotgun, up to one magnified optic on the rifle. No magazine-fed shotguns, no compensators on shotguns or pistols.
Multigun Limited division is the same as above, except NO magnified optics on the rifle---either irons sights, or a non-magnified dot.