Help needed with Chopping

I have this trouble that happens every now and then whem I'm chopping samples.
I chop a few slices and then I try to time stretch them.However they start with different tempos (and I mean really different, a couple times it was +-10bpm.)It is really odd cause just by listening to them you can tell there's no significant differences in their tempos.This results in obvious tempo differences when I apply the same time stretch to all the samples.
You got any advice for that ?

Stop counting bpms. They will always be inaccurate. My personal trick is to ALWAYS check the length of your chops. I'm sure they will all be different lengths.

Next find you a decent BPM Calculator that allows you to enter the sample length and locate the BPM. Timestretch each sample accordingly and you should be good.

And if there are still little gaps in there, try to use the Alternate Loop function. Helps me a lot.

I would try time stretching the whole sample before chopping it into individual slices. This always work for me and also use alternate loop to help out.

Thanks for the responses. Can anyone send a link that explains how alternate loop works? I googled it but couldn't find anything.

https://www.youtube.com/watch?v=_vAMFN0Uwec this should be helpful.