Is there a big difference between the 4350 powders, H, IMR, And AA? I ended up getting a few cans of AA after waiting for a long time for H4350 to become available. This will be for my initial startup loading for my 06's btw.
-
Help Support TNDeer:
4350 powders
- Thread starter MUP
- Start date
7mminatree
Well-Known Member
They're all right together on the burn rate chart, but still having different characteristics with temp sensitivity and metering and pressure curve.
mr.big
Well-Known Member
A and IMR are very close with H being a little slower,,
Thanks guys. What's the difference between them in form characteristics? I believe AA is rod type, but can't remember for sure, but what about H and IMR? Is there that much inconsistency between rod and fine powder types for metering purposes? I know my powder throw "crunches" the rod type on delivery cycle.
DaveB
Well-Known Member
Hello MUP-
Yes, there is a metering difference between flake and extruded powders. IMR4350 is an extruded single base powder and it will easily bridge. Wish i had a picture of it, but if you look at most extruded powders you will see sticks of various lengths. The crunch is literally the tool cutting the sticks. It probably crunches the flakes you just can''t hear it.
This is informative:
http://www.imrpowder.com/msds.html
Yes, there is a metering difference between flake and extruded powders. IMR4350 is an extruded single base powder and it will easily bridge. Wish i had a picture of it, but if you look at most extruded powders you will see sticks of various lengths. The crunch is literally the tool cutting the sticks. It probably crunches the flakes you just can''t hear it.
This is informative:
http://www.imrpowder.com/msds.html
All the 4350 series are extruded then right?
mr.big
Well-Known Member
MUP":2m3nu0yc said:
yes,,and they burn a little different also,,H4350 is a right smart slower than IMR 4350,,you need to treat them as entirely different powders like 4320,4064,and 4895,,
they all work well in certain loads,,nothing bad about either just different,
IMO H4350 flows through a measure better than the other two
10-4 Thanks for the info guys.
Model70Man
Well-Known Member
I prefer RL17. Less pressure signs with increased fps is what I have noticed. 4350 works the best for my 260 however.
Wish I would have known about what you were looking for. There is a little gun store in Riner VA I was in last weekend and could have grabbed you some. Found 3# of Reloader 25 for a friend. Maybe we should start a wish list thread for reloading stuff!
Not a bad idea! 
