ORIGINAL: maytom
I've been shooting a pump gun for many years now, but if I were to get a new gun just for Turkey hunting, it would be a Semi-Auto!! I have no complaints with a pump, except when a fast follow up shot is needed. That's where a Semi-Auto shines,since there's no loosing your sight picture or removing your face from the stock in the process of taking the next shot. I'll take the 11-87 over the 870 for that very reason.
Not to mention that the gas autoloaders have less recoil. I shoot both the SP-10 and an 870 Super Magnum,and the SP-10 has less recoil than the 870...by quite a bit.