Veral,
I just read a post of yours that discouraged the use of 2400 in hot 44 mag loads. I've been using Keith's old recipe (standard primers) with hard cast bullets from Lyman 429421 mold for many years.
They chrono slightly over 1400 fps from a 6 1/2" barrel and shoot exceeding well.
This is the first I've ever heard of a problem with 2400, especially regarding any throat erosion. For jacketed bullets, I've always used H110.
Please enlighten me.