| First off, I know of no formula for the pinweight of a gooseneck other than what the manufacturer should list on the trailer manufacturers plate (which should list GVW as well as empty pinweight) and should be somewhere near the front of the trailer. I suspect the reason there is likely no formula is it depends, in part, on where the axles are set on the trailer. That said, the pin weight of the gooseneck might end up being slightly higher than a bumper pull, but you're directly over the truck's axle (or at least close) as opposed to the the end of the truck at the rear bumper, so the extra pin weight shouldn't be a problem, especially when you're talking about a 2 horse trailer. As far as the pin weight of the trailer loaded, the way the gooseneck is designed, the pinweight should increase only slightly when loaded, depending on how you load it, and for your trailer, how the horses are loaded (side by side or front to back). Any of you folks with 5th wheels want to chime in?
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