New 45-70 Mould on the way........

[Ben]

405 gr. 24 grs. 2400

 

[Rally Hess]

That was around 1200 FPS with the 405? About what was the live weight of the deer? Looks like plenty of authority.

 

[Ben]

120 lbs.
Should be more than 1,200 fps.

 

[fiver]

I like how the 45-70 has a tendency to make in and out holes about the same diameter.
they mess up things in between pretty good but the hole size is generally consistent like that.

 

[Rally Hess]

Ben,
I was just guessing from a similar listing for a 420 gr in the Lyman CB manual(2nd edition) Third addition doesn't list any 2400 in .45-70. The 2nd edition lists 25.7 of 2400 as max in 1895's and 1457 FPS, so I was guessing slow for sure.

 

[Brad]

The older Lyman manuals often listed 2400 with cast for rifles but the newer editions don't. I still refer to my older cast bullet manual more than I do the newer ones.
In my Marlin 1895 I get 1350 with 24 gr of 2400 with a 420 bullet very similar to Ben's.

 

[Rally Hess]

I use both manuals. The newer has listings for the .32 mag and the older doesn't even list it. The RCBS CB manual is a good place to look for their bullets but pretty conservative. The internet is a helpful source but we need to consider the source also. I look for several sources as a starting point and let the firearm decide what it likes the best.

 

[fiver]

if you look in some of the older, older manuals all you'll see is 2400 loads for everything imaginable.
ton's of 3031 loads too.
mostly because they used the least amount of powder to get the job done.

 

[Rally Hess]

And the older references also advise the use of fillers to keep the 2400 close to the primer. Seems several sources get stuck promoting their powders or limited versions within their selected powders/ moulds. Getting tough to find .32-20 listings near the top end.