Reloading Powders

[Cobbler]

I’ve always used and am using IMR 4350 for my 243 Winchester and my custom 8mm-06 Improved. However, with the unavailability of powders in todays world I would like to know if I can use H4350 powder? I’ve had an 8lb. container for quite some time but have never used it. Is there any reloading data I could look up as a starting load available?
Thanks.

 

[DrMike]

Hodgdon provides data for the 243 Win with a variety of bullets.

https://www.hodgdonreloading.com/reloading-data-center

Check out the Nosler site as well.

https://www.nosler.com/243-winchester

 

[Tntiny]

Yes you can use H4350 n should be able to in the 8mm06.. Finding data for might be an issue however.

 

[Cobbler]

Yes, I do have loads word up for it so I’ll start low and work up. Thank you very much.

 

[redryder66]

I've had to switch back and forth between IMR 4350 and H4350 a few times. In each case I've been able to get back to identical velocity and accuracy with a load that was within 0.5 grains of where I started from. I've pretty much settled on sticking with H4350 for many loads and refuse to let myself run out of it. I think I have at least 16# of it on the shelf right now.

 

[DrMike]

The two powders have similar burn rates. Therefore, they will give roughly equivalent results when used judiciously. As an aside, Accurate 4350 has a burn rate similar to the other two propellants.

 

[Blkram]

As mentioned, while the same numerically, the burn rates and attributes are slightly different, and loads need to be reduced, and worked up to in your rifle.

 

[wvbuckbuster]

The last 243 I had was using H4350 in it. Did well. Dan.

 

[RL338]

Without knowing what bullets you’re loading the good Dr. supplied 2 very good online resources.