I've done a 15 pounder that trimmed down to 14 and a 17.5 that went to 16.5. That thing is huge...
Terry - KCBS member
LSG 24"x30"x36" Vertical Upright Smoker with Warming Oven - *** In queue to be built ***
Weber Smokey Mountain 22.5" - Weber Genesis S-330
Pitmaster IQ-120 - Thermapen - Maverick ET-733
For info on any mods I have done to my WSM, please see this post