Author: BillyHill
Subject: H 4198/IMR 4198
Posted: December 20 2016 at 8:07pm
I'm starting to work up a cast load for my 303 with a 185 grn gas checked bullet cast from wheel weights. I found data for IMR 4198 with a start load of 21 grains at 1500 fps and a max load of 28 grains at 1950 fps. I don't have IMR 4198 but I do have H4198. I was going to start at 22 grains and work my way up. In the load data that I have seen where 4198 powder is listed, the charge weight is almost identical for both Hogdon and IMR powder using the same bullet/weight. Has anyone tried H4198 for cast loads. I think if I start at the low end and carefully work my way up I should be OK. The data I have is from the Lyman Manual.
Subject: H 4198/IMR 4198
Posted: December 20 2016 at 8:07pm
I'm starting to work up a cast load for my 303 with a 185 grn gas checked bullet cast from wheel weights. I found data for IMR 4198 with a start load of 21 grains at 1500 fps and a max load of 28 grains at 1950 fps. I don't have IMR 4198 but I do have H4198. I was going to start at 22 grains and work my way up. In the load data that I have seen where 4198 powder is listed, the charge weight is almost identical for both Hogdon and IMR powder using the same bullet/weight. Has anyone tried H4198 for cast loads. I think if I start at the low end and carefully work my way up I should be OK. The data I have is from the Lyman Manual.
