Author: BrassMagnet
Subject: Cast Bullet loads
Posted: 06 August 2013 at 11:52am
Not specificly. However, Hodgdon and IMR are now married. In the Hodgdon, IMR, & Winchester Basic Reloading Manual from January 2010, page 13 relative burn rate chart IMR 4198 is #56 and Hodgdon H4198 is #57. I would say that makes them very close. If you look at 4895, it is different enough that Hodgdon H4895 is #69, Vihtavouri N53 is #70, and IMR 4895 is #71.
From the burn rate chart and the designation of 4198, I would say medium loads from a trusted source would be a good starting point as long as you realize minimum and maximum loads may not be the same. So I believe a medium load of IMR 4198 could be used with H4198 powder substituted. I would use exactly the middle to start and I would not go near the limits.
Now the Lyman 4th Edition Cast Bullet manual shows the Saeco #305 180 grain gas checked RNF bullet with Federal 210 LR primer and IMR 4198 powder from 21.0 to 29.2. The medium load would be 25.1 grains and I would round that to 25.0. I would feel it was safe to start at 25.0 and then increase up to 27.5 or decrease down to 22.5.
Just my two cents. Load at your own risk. I have been told that 4198 and 5744 were both designed as smokeless replacements for black powder.
Subject: Cast Bullet loads
Posted: 06 August 2013 at 11:52am
Not specificly. However, Hodgdon and IMR are now married. In the Hodgdon, IMR, & Winchester Basic Reloading Manual from January 2010, page 13 relative burn rate chart IMR 4198 is #56 and Hodgdon H4198 is #57. I would say that makes them very close. If you look at 4895, it is different enough that Hodgdon H4895 is #69, Vihtavouri N53 is #70, and IMR 4895 is #71.
From the burn rate chart and the designation of 4198, I would say medium loads from a trusted source would be a good starting point as long as you realize minimum and maximum loads may not be the same. So I believe a medium load of IMR 4198 could be used with H4198 powder substituted. I would use exactly the middle to start and I would not go near the limits.
Now the Lyman 4th Edition Cast Bullet manual shows the Saeco #305 180 grain gas checked RNF bullet with Federal 210 LR primer and IMR 4198 powder from 21.0 to 29.2. The medium load would be 25.1 grains and I would round that to 25.0. I would feel it was safe to start at 25.0 and then increase up to 27.5 or decrease down to 22.5.
Just my two cents. Load at your own risk. I have been told that 4198 and 5744 were both designed as smokeless replacements for black powder.