*grins* I don't claim to be an expert either. I've looked the LeMat up on Wikipedia after reading Deathlands. The novels features Dr. Tanner who wielded one.

I also like quick loaders, volcano guns and pepperboxes.
--Volcano guns were more accurate and powerful then their revolver counterparts and are reminiscent of miniature lever action rifles. 
--Pepperbox pistols and rifles have one barrel for each round and are mostly break action like a shotgun and are known for their inaccuracy, stunning rate of fire and horrible reload times. 
Quick Loaders, which I learned about playing "Gun" for the Xbox, are revolvers that feature a break action that pops out the entire cylinder. You then pop in an entirely new, fully loaded, cylinder. Very fast to reload but the break action portion tends to make the gun more fragile and less accurate.