I was playing stable version on playUS.dayzunderground.com:2502

So basically I found BK-133 shotgun and a pack of slugs. Unpacked slugs, put shoty and slugs into quickbar, loaded a gun, but it loaded only a 1 bullet and 4 disappeared. Figured out I should to reload a gun, cause it might give me back all 5 slugs, but it didn't. Pressed a quickbar to load last 5 slugs into BK-133, but in front of my eyes they turned into BUCKSHOTS.

Couldn't reproduce this cause I didn't find a new pack of slugs.