Just got these in and they are the same as I bought before so will load up for 41AE with 300mp. I have some loaded up now from before but don't remember what I used but have it written down so will check. I think I used 41 mag data and went from there. It shot real good as I recall. Just looked it up and I used everything!!! Power Pistol and AA9 and 300MP and they all worked. The 300mp was for 170g bullets so would work that up or down to 150g Lehigh!! Craig