Hi upstech76,
If you are also loading for other cartridges, Try Varget. 50gr under almost anything except the jacked HP. There try the 57gr load.
Pulled this from the Hodgdon load data website,
http://data.hodgdon.com/main_menu.aspPaul,
These data are intended for Springfield "Trapdoor", Rolling Block, and Antique Replicas. Max pressure, 28,000 CUP
| | | | Cartridge: | 45-70 Government (Trapdoor Rifles)* | Load Type: | Rifle | | | | Starting Loads
| | | Maximum Loads
| | |
Bullet Weight (Gr.) | Manufacturer | Powder | Bullet Diam. | C.O.L. | Grs. | Vel. (ft/s) | Pressure | Grs. | Vel. (ft/s) | Pressure | | |
| | | | | | | | | | | |
|
300 GR. CAST LFP | Hodgdon | Varget | .458" | 2.465" | 45.0 | 1599 | 17,800 CUP | 55.0 | 1880 | 20,600 CUP | | |
300 GR. SIE HP | Hodgdon | Varget | .458" | 2.525" | 57.0 | 1770 | 16,300 CUP | 63.0C | 2020 | 23,800 CUP | | |
385 GR. CAST LFP | Hodgdon | Varget | .458" | 2.505" | 42.5 | 1537 | 15,400 CUP | 52.5 | 1805 | 21,800 CUP | | |
405 GR. CAST LFP | Hodgdon | Varget | .458" | 2.540" | 40.0 | 1392 | 15,600 CUP | 50.0 | 1718 | 20,900 CUP |
These data are intended for the 1895 lever action Marlin ONLY. Max pressure, 40,000 CUP. Do not use these data in any of the firearms listed in the Trapdoor section. Do not use pointed bullets in any rifle with a tubular magazine.
| | | | Cartridge: | 45-70 Government (Lever Actions)* | Load Type: | Rifle | | | | Starting Loads
| | | Maximum Loads
| | |
Bullet Weight (Gr.) | Manufacturer | Powder | Bullet Diam. | C.O.L. | Grs. | Vel. (ft/s) | Pressure | Grs. | Vel. (ft/s) | Pressure | | |
| | | | | | | | | | | |
|
350 GR. HDY JRN | Hodgdon | Varget | .458" | 2.540" | 54.0 | 1786 | 21,800 CUP | 60.0C | 2013 | 29,500 CUP | | |
400 GR. SPR JFP | Hodgdon | Varget | .458" | 2.540" | 50.0 | 1655 | 18,600 CUP | 55.0C | 1845 | 25,000 CUP |