45-70 error in Lyman #48 ???

[BobC]

Last weekend I was looking in Lyman's 48th Ed Reloading Handbook for 45-70 loads for a 300 gr lead bullet in my T/C Encore. The 1886 Winchester/1895 Marlin section offered loads for a cast 293 bullet with several powders. All had a range from start loads to max loads of 4 - 6 grains of powder; except IMR 4198 powder which started at 34.5 grains and maxed out at 49.7 grains.

I thought this might be a typo, intending 34.5 to 39.7 grains, since the same chapter of 47-70 lever action loads showed a 300 JHP with a max load of 41.0grains of IMR 4198. But, a telephone call to the Ballistics Manager at Lyman confirmed the printed values as correct.

Is IMR 4198 that flexible for lead bullet loads? Any other explanations? I'm confused.

- BobC

 

[steveno]

4198 is fairly versitile but I never had much luck with it. I use 2400 and Unique in my Ruger # 1S 45-70

 

[redneck2]

.45-70 is kinda weird, in that acceptable loads vary a LOT. What I mean is that you can use a little of a fast powder or a lot of a slow powder. Also varies greatly with firearm type

I use 55 gr of Varget with a 405 Speer. Range is 50-60 grains. I didn't refer to a burn chart but I suspect Varget is not too far off from your powder.

 

[klw]

Tom Griffin at Lyman is in charge of their lab. You could call or e-mail him with your question. I'm sure he would be helpful.

 

[ball3006]

I use H322 behind a 405 fp.....

in my TC Contender. Very accurate.......Kicks the crap out of you though but deer don't move after being hit.........chris3

 

[charger]

Straight walls are nice in that you can burn pretty much anything in any amount in them. Face it,there basically a muzzleloader..Now weather you'll hit anything or not is where the trick is