IMR 4350 vs H4350

[sam700]

I'm wanting to work up a load for the 150 gr ttsx in a .300 win mag, but I noticed that the barnes website only lists data for H4350 and not IMR 4350. I only have IMR 4350. I noticed that every load I have ever seen shows the max and starting loads are between 1.5 and 0 grains different for the two powders with H4350 allowing slightly more powder.

Would it be safe to work up a load normally with IMR4350 using the numbers for h4350 and stopping 1.5 grains short of the max load listed for h4350 (73 grains)?

If anyone has a load for the .300 win with 150 ttsx's or tsx with IMR 4350, let me know.

 

[ArchAngelCD]

I would call or write Barnes and Hodgdon and ask them for the correct data. I'm sure they will be more than happy to provide it to you.

 

[cliffy]

IMR 4350 versus Hodgdon H4350

IMR 4350 burns slightly faster than Hodgdon H4350. What this means? I only use H4350 in my .243 Winchester and .30/06 loads. I've tried IMR 4350 and noticed no big wow difference. I still prefer H4350 in all my applications. Hodgdon H4350 works better than most in .243 applications up to 100 grain bullets. For 105 Grain bullets, I prefer Alliant RL-22 powder. To each his own, so you're in the right ballpark. cliffy

 

[sam700]

I emailed Barnes, we'll see they say.

 

[sam700]

So Barnes says a starting load of 69.5 grains of IMR 4350 and a max load of 75.

 

[ArchAngelCD]

So Barnes says a starting load of 69.5 grains of IMR 4350 and a max load of 75.

That's right in line with what Hodgdon lists on their Load Data Site. Hodgdon list a range of 69.0gr to 74.0gr IMR4350 with a 150gr Sierra SP bullet. I'm glad you got an answer from the bullet manufacturer. They usually know best when it comes to their bullets.

Good luck finding a load your rifle likes.