Originally Posted by McLovin
Years ago I ordered gut in bulk from Bow Brand. I spoke with the sales rep and asked the same question. She said to simply store it in a ziplock bag in an area with a constant cool temperature (e.g., basement) away from direct sunlight.
If you do that, it can last for years.
It's worth noting that Bow Brand don't even bother to vacuum seal their packs, so they clearly aren't overly concerned about the gut drying out.
If you follow McLovin's advice, it'll be fine for a long time (unless your basement is somewhat damp like mine, in which case you're better off picking a different room).