Have a good friend who started loading a number of years ago after he saw my set up. We've had good conversation, and shared ideas. He has always used jacketed bullets, and recently started using lead for practicing with an new SBH in 44 mag. He called me and said he had used PowerPro 300 using jacketed data for some equal weight lead slugs. I suggested he find another powder that could be used for lead and jacketed. He argued with me about it. It may be ok, but for some reason he is determined to use his powder. His current load is 24.2 gr of PowerPro 300 behind a 240gr lead slug. He thinks because he is under the max load for Alliant's data he'll be ok. Maybe, but I'll be standing down a few bays when he tests his load..