How much weight can a pickup truck carry?

What Roger said - I filled up my old Ranger with gravel I got for free just for coming and taking it away from a co-worker's house. Me and a Buddy shoveled it in and then put bags of gravel on top. We had it spread out pretty evenly in the back of the truck, but man it was sitting really low! Anyway, we discovered that if we sped up over about 40 miles per hour, the front wheels would start rising up! I guess the torque of the wheels was enough to do it??? Had to drive from Columbia Illinois, on the highway, to Arnold MO, which is about 20 miles on the road, with the emergency blinkers on the whole way.

We would have been better, in hindsight, to have put all the bags of gravel up right behind the cab.

You should rent a trailer to get a whole ton. I'm pretty sure what you are describing is used as the base for outside pavers, retaining walls etc. I bought some of this in bags before. It makes a dense load, so you might be able to fit it in the back of the truck, but this would be bad, because the max load on your truck is probably about 1000 to 1100 pounds, and I'm pretty sure that would include the driver etc. Don't break your axle, man!

PS - IF you have the Deliver it, have them put it beside your driveway, not on the driveway. It might kill your grass, but grass grows back. Having a ton or 3 of material dumped on your driveway could probably do serious damage to the driveway itself.

Good luck and let us know how it goes!