The Heym 470 I ordered is to be regulated with W-R 500gr woodleighs. I've read multiple posts here and on NE about using lead or pistol bullets with AR5744 powder for practice. Dan's load seems to be the most often quoted. I've also read that this tends to be a "dirty" powder. Any issues with powder residue in the action or in the number of rounds per session without cleaning?
thanks!

I use a 500 grain FPGC bullet cast from wheel weights with a Ballisti-Cast mold with 45 gr of 5744. Powder residue is not a significant problem. Like all big bores you are burning enough powder that cleaning the rifle is a good idea ... as there are some pretty corrosive materials left behind.

Cast bullets are good for practice. Have taken deer and pigs with them too.

I purchased some .470 cast bullets from Mstarling, you might check with him PM he might be still doing that. They shot real good in my 470