newbie need alot of help!

I have a mpc 1000 and I have been sampling records.I know I have to find the bpm of the record and pitch shift it or time stretch it to fit my tempo.But if i chop it again do i have to keep finding the bpms of my chops.my problem is my drums are off.i have been using acid pro but im having no luck.can anyone help

Have you tried using your ears? Adjust the tune of the sample in the mpc or if you want to, adjust the bpm value of the drums you've sequenced into the mpc (bpm of the sequence) to match the sound...?

if i find the bpm of a four bar loop and timestretch it then chop it do i have to find the bpm of each chop i have made

I see what you mean. ...No, not unless you edit the individual chops in some form.

be sure to put your chops on "note on" so that you can "play" your sounds.

so as long as i amchopping from that four bar loop i should still have the same bpm.By editing the chop you mean?

Yeah man, its the same sample, just in pieces.

Say you have a four bar drum loop (aka big fuc^kin loop) and it perfectly matches a four bar sequence of drums you've recorded in the mpc. If you then chop that four bar drum loop into four equals parts (four equal bars, just seperated), you will still be able to play each of the bars and they will still match the sequenced drums just as they did (as long as you trigger the samples at the right times) when you played the original four bar drum loop when it was a whole. Does that make sense? Kind of a hard thing to explain even though its a simple concept.