44 Magnum HORNADY XTP 300 grain IMR 4227

[MuskieMan223]

Can someone tell me what the Hornady manual calls for my 300 grain XTP bullets with IMR 4227. These will be shot from a Winchester 94

Also....is H4227 and IMR 4227 interchangable?

 

[gerryb158]

The IMR web-site shows 18 gr to start and 20 gr maximum in rifle loading. However, you may wish to check other sources. Gerry

 

[SweetWilliam]

Hornady #8 manual shows 15.2gr. to 18.8gr. for rifle loads.
For handguns it's showing 17.6gr. to 19.2gr.
And that's for using IMR4227. Don't know about H4227.
But in my Lee # 2 manual for 300xtp it shows using H4227 18gr. to 20gr. It has no IMR 4227 data.
Speer lists for they're 300gr. Bullet (not xtp) using IMR 4227 18.9gr. to 21gr.
Hodgdon's list H4227 at 18gr. to 21gr. for 300xtp.
http://data.hodgdon.com/cartridge_load.asp
That's all I got.

 

[MuskieMan223]

Now I am even more confused lol

 

[gerryb158]

Personally, I think I'd pick a nice "middle of the pack" loading as in this case 19.0 gr. and live happily ever after. Gerry

 

[6gun]

15.2grs. starting load, 18.8grains Max. load is what Horandy lists for rifle but this sounds more like a pistol load to me.

 

[6gun]

Now I am even more confused lol

What are you confused about? let us know we can help, your 94 can handle a strong load I wouldn't start at max. personaly I would start at 16.4grs. --- 17.6grs and that's because I own a 94 44mag and know how it shoots.

Just a question why are you using a 300gr. bullet?

 

[MuskieMan223]

I dont get why pistols can handle more load? Is it due to barrel length and more power being burned in the rifle barrel?
I am wanting to load up 50 of them just to have and shoot. I got a box of them with some other bullets and had some brass and IMR 4227 around and wanted to make some ammo

 

[6gun]

I dont get why pistols can handle more load? Is it due to barrel length and more power being burned in the rifle barrel?
I am wanting to load up 50 of them just to have and shoot. I got a box of them with some other bullets and had some brass and IMR 4227 around and wanted to make some ammo

Actually a Rifle can handle a hotter load then a pistol can, a pistol use's lighter loads, I don't understand why Horandy is listing a hotter load for pistol than rifle either, I think they have ther data backwards.

IMR's wesite is showing me 18-20 grs. for both pistol and rifle after reading this I would just go 18grs.

 

[MuskieMan223]

I think 18 grains sounds pretty safe for both my Win 94 and my Redhawk 7.5" so I think your right, 18 grains looks like a winner

 

[MuskieMan223]

IMR site shows H4227 at 18-20 for 300 grain rifle
they dont show for IMR 4227 for rifle
I am under the impression H4227 is different that IMR 4227 ????

 

[6gun]

Wish I could be more help but I have never used IMR 4227 I have always used Winchester 296 and loaded lighter loads for pistol and heavier for rifle cause that was what my manual showed, I'm sure your Redhawk can handle 18grs. no problem.

 

[SweetWilliam]

Hornady's manual is showing them using a Ruger Carbine for they're rifle loads, don't know if that matters or not.
It's my belief that Hornady's max charges are on the lite side. I've loaded 300gr. XTP's with 20grs. of H110 & shot them in my SB with no problems at all. But Hornady lists the max charge at 19.5grs. And the same thing with 308loads I use.
Just saying.
You do what you want but I'd think you'd be safe anywhere between 17.5gr. & 20gr. Of IMR4227.

 

[6gun]

IMR site shows H4227 at 18-20 for 300 grain rifle
they dont show for IMR 4227 for rifle
I am under the impression H4227 is different that IMR 4227 ????

Your right, don't think they are the same either, looking at other loads that show both the H2447 needs more powder so it would be a lighter load.

Just looked at my Speer manual it shows 18.5 --20.5 for IMR 4227 in hand guns so I think your real safe doing 18grs.

 

[7mmb]

Also....is H4227 and IMR 4227 interchangable?

The newly manufactured IMR 4227 is the same powder as H4227. IMR 4227 is now made by ADI in Australia, which has been supplying Hodgdon with their Extreme Extruded and Clays series powders for years. When Hodgdon bought IMR they dropped H4227 and began selling it as IMR 4227. The old Canadian manufactured IMR 4227 and H4227 were very similar but not identical. IMR 4227 that is labeled as made in Australia is H4227 with an IMR label on the can. If you check Hodgdon's data under 357 Magnum for rifle they list loads for both H4227 and IMR 4227 and all the numbers are identical, in the same way as their data for H110/296, HP38/231, and H414/760 are identical. ADI calls the powder that Hodgdon used to sell as H4227 and now sells as IMR 4227 AR2205. IMR 4227/H4227/AR2205 won't give you as high velocity as H110/296 or Lil' Gun, but, being one of ADI's extreme extruded powders, it will give the same velocity in the winter as the summer. The powder is pretty darn accurate too.

 

[MuskieMan223]

Thanks everyopne!

 

[dickydalton]

IMPORTANT! Revolvers have a gap between the cylinder and the barrel that lets lots of gas and pressure escape. THAT is why they list higer powder charges, NOT Hotter loads, for the handguns. Look at the velocity. Shoot a hot revolver load in a Contender if you want to see what I mean. You can wreck your rifle if you don't pay attention to all the variables and Hornady aint stupid.