Dirt Ferguson
SILVER Star
The Plano rifle cases are kind of a mixed bag, they've kept out the rain but I wish they were about 2 inches taller as you just can't put that much in them...and they feel super flimsy and cheap...oh well, for about $200 for the pair I'm OK with them for now until I figure out a better option.
I'd recommend taking a look at the ROAM cases. My buddy runs them on his Taco and they are very nice quality. But nowhere near that Plano price point.

Rugged Cases - ROAM Adventure Co.
Explore Rugged Cases, heavy-duty storage cases and boxes built for camp gear and tools. Dust/weatherproof gaskets, interlocking design for stacking, lockable latches.
