i just made my own feed ramp/ bullet guide last night. i had a hell of a time getting the tap started as well. i was originally using a ratchet and socket to turn the tap like i normally would do but no such luck here. so i took a c-clamp and used it to provide the down force on the tap, while i turned it with a pair of vice-grips. it worked very well, i had it done in about 5 minutes, going very slowly while listening to what the tap was doing.
crappy cell phone pic, didnt have my digi cam with me at the time. (i also used the same tap and bit combo from Lowes, house Kobalt brand 8-32)