45-90 Jamison

[cwtebay]

A friend dropped off 4 boxes of these. Any idea what the load is? Black powder? Smokeless?
Thank you!298440

Sent from my Pixel 5 using Tapatalk

[hawkenhunter50]

Based off the velocity figure, I'd say smokeless. Maybe with that light weight bullet could be black.

[Nobade]

Can you hear the powder rattle around when you shake one?

[cwtebay]

Some shake a tiny bit (stethoscope on the case) most do not. The boxes were still sealed with the label so I don't believe that they are anything but original. As far as the velocity goes, I've noticed that a lot of advertised velocities are a bit optimistic, but I don't think that it's out of range for an express loading like this with black powder.
I'm going to have to dump one to find out.

Sent from my Pixel 5 using Tapatalk

[Don McDowell]

I don’t think Jamison loaded any but smokeless I their factory amm

[cwtebay]

It looks like 63gr of IMR3032 (or similar).
Thank you for your help!

Sent from my Pixel 5 using Tapatalk

[dirtball]

You still end up with 80 pieces of really good brass!!

Dave

[Gobeyond]

And a little stash of 3031.

[Lead pot]

Did you find a wad in the case? if you did dump all the loads