Anybody have experience with Accurate Powder's 5744? I tried it for the first time today, 55 grains in a .460 Weatherby behind a 300 grain bullet, and was surprised by how dirty the barrel was. It looked like there was a trail of powder granules going all the way down the barrel, but when I pushed a piece of cloth through it came out with black residue and only 2 or 3 granules, so I'm thinking it's some kind of ash/burnt residue. Is this normal?

sounds about right its been a few years since i used any.
A reduced charge heavy bullet combo.
are you crimping?

That is to be expected, I think... It happened to me with 5744 as well, but it sure did shoot well. I think 5744 is nothing more than a guncotton-based IMR 4227.

quote:

Originally posted by hivelosity:
sounds about right its been a few years since i used any.
A reduced charge heavy bullet combo.
are you crimping?

The rounds I fired were not crimped. I'll give some a crimp and see if there is any difference.

quote:

guncotton-based IMR 4227

Its double base for sure.
Used in older rifle 45/70springf.
Ill did up my notes and see if i joted down any thing in particular.

I use this powder for 458 and 45-70. Unburnt powder is typical for the lower pressure loads and is no big deal. I dont think crimping will help with that powder charge but it certainly wont hurt. You would probably need to increase charge/pressure to get rid of unburnt powder, but thats not the point of using this stuff.

How was accuracy? I'm amazed at how accurate my 458 is with this powder even thouth the case is only half filled.

quote:

You would probably need to increase charge/pressure to get rid of unburnt powder, but thats not the point of using this stuff.

Do what you want,,
All load data for fast powders such as the 5744 recommend a heavy crimp.
With a crimp the bullet will be held in the cartrage a few mil of a second giving the powder more time to burn and build pressure in the case

Never used the powder.
Here's a no cost possible solution. Increase the diameter of you cast bullet to increase pressure. Or use the same powder charge with a heavier bullet.
Jim

A good crimp is always a good idea with this powder, and for a 460 you should probably be crimping all loads. But given the charge and the case capacity of the 460, I believe you will still see a lot of unburned powder. Its no big deal.

By the way, I dont suggest increasing charges without some published data.

Also try giving the technical guys here at accurate a call, they helped me develope 458 loads with this powder.