Crisscross For Powders ???

[razmuz]

If a load calls for so many grains of IMR-4350 how would one know how many grains of H-4350 it would take to get the same results?  Is there a formula for this?

[BruceP]

Not being smart but you should find a manual that lists the cartridge and bullet weight you want with H4350. These two powders are very close to each other but I would still rather work from listed loads when possable. As far as I know there are no formulas to go from one powder to another, different, powder. There are just too many variables.
BruceP

[KN]

Gotta agree with bruceP, trying to cross reference powders is a very dangerous practice to get into. There is just too much reloading info out there to justify trying to do that.  KN

[securitysix]

If a load calls for so many grains of IMR-4350 how would one know how many grains of H-4350 it would take to get the same results?  Is there a formula for this?

To find out, you go to Hogdon's Website and look up the load you want to know.

[Questor]

I treat them as different powders and consider the naming coincidence a disservice to handloaders.  I use H4831SC, not H4831 or IMR4831.  The reloading manuals treat them as different, and so do I.

[BCB]

razmuz,

There is a short article concerning the 4350's in the December 2002 issue of Handloader Magazine.  This article indicates AAC-4350 then IMR-4350 then H-4350...Listed slowest to fastest.  It would be worth looking at this short article.

Personally, AND I DON'T RECOMMEND THIS, I have used them interchangable in my 270's.  I always started with the lightest charge listed for a particular bullet and went from there.  Never had a problem.  Maybe I was lucky!!!  Actually I don't use it much anymore since I mostly use surplus powders now and avoid the high cost per pound of canister powder.  Good-luck...BCB