bullets and sleeves

I'm assuming that by "slippage" you mean the bullet slipping out of the sleeve? If so, we haven't used that particular bullet before but we've had many similar to it and have never had a problem with slippage. Actually, most of them have been tight enough that the bullet can take a little work to remove and put back. We haven't had trouble with the sleeves getting over-stretched either, though some will tear eventually.

sorry never used it