I received some load data from Cast Performance for their 405gr. WLNGC for the 45-70 today. I need to call them and find out the COL, primer, pressure's, and what brass they used. Anyways they recommended a minimum charge of 46gr H4198 @ 1700fps and a max of 51gr. H4198 @ 2000fps both out of a GG.
Looking at my manuals and loaddata.com that load seems a little hot, especially for a cast bullet. I don't trust this data so far. Am I just over cautious or is this data way too hot for the 45-70 out of a GG with an 18.5" barrel?