Accurate 4350 Compared to IMS and H

[bsekf]

Want to load my 6.5x47L and 6x47L with Accurate 4350, It is hotter than H or IMS. Does 10% below sound about right?

 

[603Country]

Following this. I bought a few pounds of Accurate 4350 when I finally gave up trying to get more R17.

 

[358WCF]

In my, & others experience, the currently produced A4350 is notably slower than IMR or H4350... much closer to IMR4831 & almost as slow as SW4350. The original powder from way back when Accurate was young may be quicker. Unsure which type you have.

There are a few threads on site about the 4350s. The 1st one I came up with is here:

Accurate Arms 4350 vs IMR 4350 vs H4350 vs Shooters World 4350

nothing recently written about these comparisons so I started a new thread now that accurate 4350 is sourced from Canada I've only been using H4350 for the past 6+ years for 6.5 creedmoor. Now, with the shortages, I bought some accurate 4350. How does accurate 4350 compare to H4350 or even...

forum.accurateshooter.com

 

[Hudge76]

I agree with 358WCF. I bought some A4350 2 years show when H4350 and IMR4350 were no where to be found. I did get one accurate load worked up with it, but it was slow.

 

[spudgun]

If you have a target FPS that your barrel likes and Crono will tell you how much/less powder you will need to get the FPS your looking for of A4350.

 

[Trapper1956]

Want to load my 6.5x47L and 6x47L with Accurate 4350, It is hotter than H or IMS. Does 10% below sound about right?

Actually A-4350 is just a tad slower than the others.

 

[SeabeeKen]

A-4350 is for sure slower than the others. It shot great in my 338 RCM with 185 Barnes

 

[jepp2]

Does 10% below sound about right?

There are many better ways to establish a starting load, than this way. I found the cases stayed much cleaner when using LRP than SRP. Even though my velocity, ES & SD were good with the SRP.

 

[lotech]

I've used the H version exclusively for years, but going through my notes, here's what I have with the 180 Hornady SP in the .30-06:
54 H4350 = 2709
56 AA4350 = 2704 MAX

 

[Zero333]

What others say is what I also noticed.

I used all 3 in a 243win with 100 gr bullets for hunting rifle like 10 years ago so my info might be obsolete.
I'll give you my finding from 10 years ago.
22" barrel...

42.5 gr H-4350 = 2724 fps
43 gr IMR-4350 = 2,734
43 gr of AA-4350 = 2,763

Hodgdon's reloading center had data for all 3 powders since now they own AA and Ramshot...
Here is a few screenshots from Hodgdon's data...



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[whatsupdoc]

6.5 Creed 140 ELDM Lapua SP Brass CCI450


41.2gr H4350 2770 FPS
43.5gr A4350 2754 FPS + seating depth issues due to compressed load.

I would avoid this powder for 6.5x47 its too slow.