Imr 4227

[Rooterpig]

Can I use hodgdon 4227 load data for imr 4227 ?

 

[Donaldjr1969]

No. They are similar, yet different, powders.

 

[Rooterpig]

I am having a hard time finding load data for imr 4227 and 45 colt , 320 cast gc. Anybody have some load data? Thanks.

 

[Donaldjr1969]

Is that for a hot Colt load in, say, a Blackhawk or is it for a single action army load?

 

[Rooterpig]

Ruger blackhawk .

 

[Donaldjr1969]

My Lyman #49 gives no data and my Hornady only gives data for the 300g XTP for a Blackhawk grade 45 Colt loads. There is something you could try...

THIS INFORMATION IS TO BE USED AT YOUR OWN RISK! I ACCEPT NO RESPONSIBILITY FOR ANY MISHAPS THAT MAY OCCUR!!!

It has been said that you can use 44 Magnum data in a 45 Colt. As I learned from a few people on this forum, the same powder charge over the same weight bullet will give less pressure in the 45 Colt than in the 44 Magnum. Also, you can use more powder in a Colt case to get the same pressure with the same slug than in a 44 Magnum case. So...here is a load from Hodgdon's website for a 325g GC Bear Tooth Bullet.

325 GR. BTB LFN GC IMR 4227 .430" COL - 1.730"

Starting Load - 17.0g 1041fps 19,200 CUP

MAX load - 21.0C 1278fps 34,200 CUP

Primer used is a Remington 2½ but a WLP would work well. Both are a bit hotter than a Federal 150/CCI 300 but less hot than their magnum counterparts, the Fedaral 155/CCI 350. Also, the max load is compressed in the 44 Magnum case.

AGAIN, YOU AGREE TO USE THIS INFORMATION AT YOUR OWN RISK!!!

If you feel comfortable with that, it may work well for you. As always, start at the minimum end and work up.

 

[5of7]

You will find the data you need here,

http://www.hodgdon.com/

 

[Rooterpig]

Thanks ,but already found that hodgdon web site. I did not find any load data using imr4227 just hodgdon 4227.

 

[buck460XVR]

I suggest e-mailing Hodgdon directly. I have always had good luck with getting a quick and informative response from them. That said.......Hodgdon no longer lists H4227 on their website as a current product, neither does their annual reloading guide. This tells me it has been discontinued. According to the charts H4227 and IMR4227 have the exact same burn rate. In manuals where both are listed for a particular bullet weight, recipes are similar. On other forums, others have said it is the same powder in modern formulation. I would ask Hodgdon first.....but, I bet they tell you to start @ the H4227 starting load.

Anytime I cannot find info about a particular powder/bullet combination, I assume it is because there is a good reason. I generally assume the reason is because it is not good combination. Not that it won't work, but that there are other options out there that work better in that application.

 

[buck460XVR]

This is what I found over @ Handloads.com. Take it for what it is worth.

I called Hodgdon and was told that the ADI powder made in Australia would be moved over to the IMR line. So ACCORDING TO HODGDON what they are really dropping is the old IMR-4227, and replacing it with what used to be H4227 but will now be labelled "IMR-4227".

 

[Rick Courtright]

I called Hodgdon and was told that the ADI powder made in Australia would be moved over to the IMR line. So ACCORDING TO HODGDON what they are really dropping is the old IMR-4227, and replacing it with what used to be H4227 but will now be labelled "IMR-4227".

Hi,

A long, long time ago an old timer suggested I stick to loading data written about the time my powder (and other components?) was made.

That way, when one had "old" XYZ 1234 powder, and a slight change was made so that "new" XYZ 1234 powder might produce dangerous results w/ "old" data, or vice versa, it was less likely one might get in trouble.

For example, I was loading some rifle ammo yesterday, using a particular Winchester powder, and the MAX listing in the Winchester book (before Hodgdon's took over their distribution) was 54 gr. The new Hodgdon's data shows that same exact 54 gr as the STARTING load, w/ 60 gr as the MAX. Yet there was only a 600 CUP between Winchester's max and Hodgdon's.

Hmmm... looks like they're telling me a 10%+ increase in powder only produces 1%+ additional pressure... Sound right to you? It doesn't to me!

I've learned to be extra cautious whenever Hodgdon's says "New Powder A" is identical to "Old Powder B", or worse, uses an old designation on a new, and different, powder.

Gotta be careful w/ this "interchangeable" stuff, eh?

Rick C

 

[Rclark]

Well, FWIW, I have been using IMR 4227 for some time now. I tested loads with .45 Colt, .44Spec and .44Mag. John Taffin lists H4227 for .45 Colt. I use his 20g load with IMR 4227 with 255g SWC exclusively in my Vaquero, and my velocities matched up pretty well as long as I used a Magnum primer that is! Powders seem about the same to me.... in my revolvers.... YMMV.

http://www.sixguns.com/tests/tt45lc.htm