Yeah, I use a singled LBB and a magstrike and it works great for me. Just like you said, use the magstrike when they get close and the SM 1500 (or for me the LBB) at longer ranges and the guns compliment each other nicely. Plus one of the other guys I nerf with has a magstrike and a BBB, so we're doing fairly well as a team.
Well, yes and no. I can't give you any spesifics or anything but it depends on the power of the gun and the fit of the dart. Like you wouldn't put a foot long 1/2" cpvc barrel on a nitefinder, or a 4" 1/2" cpvc barrel on a singled titan. All I could tell you is the longer the barrel the more power and accuracy but there is a point where your barrel length is too long and starts to kill power.
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