You shouldn't need to worry about the Stampede jamming, as since the beginning of September when I had it, it's only done so a couple times. If it does, you should remove the clip, center the darts inside the clip, and put it in again. You should also remove, if there is one, the dart in the chamber.
Jamming can be avoided if you take your time in loading darts into the clip, as usually when jamming it's the darts in the clip that have been put in the wrong way, not centered enough, or are just too warped to be shot correctly.
The Vulcan is already prone to jamming, even when not modified. What you should do is throw that in the dumpster, and buy a Stampede ECS-50.
i think that the Nerf stampede is better than the Nerf vulcan
hit it with a hammer a few times(but not to hard)
stampede
because a raider clip fits into a Nerf stampede, alpha troopa, recon and longshot
the Nerf stampede uses whistle bullets
yes
definently it is a gr8 nerf gun
The Stampede with all its accessories attached weighs about 7 pounds, quite a load for a Nerf blaster.
No
stampede
Nerf Alph trooper is by far better