Reloading 45-70 with 385 cast boolits & IMR 4198

[Tbotfield1]

First off long time follower first time poster and I need some advice I have a uberti 1885 highwall and I was wanted to load some 385 cast projectiles for whitetail. Now that being said with this crazy shortage going on I would like to use some IMR 4198 that I have a magnum primers if possible, y’all have any ideas on where to start ? The gun is rated at 28,000 CUP and I would like to run some fairly hot loads if possible.

[KMac]

Lyman 48th Edition 45-70 Government
Cases:............................................ ........................................Remington
Trim-to Length: .................................................. ......................... 2·095″
Primers: .................................................. ........................Remington 9½
Primer Size: .................................................. ....................... Large Rifle

45-70 Government (For 1873 Springfield)
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
385 Lyman#457124 IMR IMR-4198 30.5 1298 11,300 cup
385 Lyman#457124 IMR IMR-4198 34.0 1441 16,000 cup

45-70 Government (For Ruger No. 1 and No. 3 Only)
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
385 Lyman#457124 IMR IMR-4198 40.5 1712 25,100 cup
385 Lyman#457124 IMR IMR-4198 45.0 1924 37,100 cup

[Tbotfield1]

Thanks for the quick reply I’ve seen and read a lot of older forums I’m very glad to know there is still people talking about this stuff nowadays thanks again for the info

[725]

I load 30 grains of 4198 under a 415 grain boolit. Dacron added. Carnuba lube from the sizer and then tumble lubed in Ben's LL. Nice. Similar weight to yours and in the same general powder load range.

[Tbotfield1]

Thanks for the info 725, if you don’t mind me askin what size / thickness do you use and do you pack the case full or just fluff it enough to hold the powder in place ? Thanks.

[725]

Search out related threads on this site for authoritative information in the use of Dacron filler. It's a subject requiring a good understanding. I use a good pinch and stuff it in with a pencil eraser. I don't pack it tight, but rather firm enough to keep the powder in place, in front of the primer.