Vapodog

At a minimum they are similar.....add to that AA-4350 as well.....

Since Hodgdon now distributes both H-4350 and IMR-4350 it's easy to get data for both and simultaneously. One should not substitute as though they were identical!

I have a sneaky hunch that AA-4350 is identical to IMR-4350 and that H-4350 is just very close.....but one would be gambling to assume that this is true!!!!....there is nothing to confirm it!!!

One must assume they are totally different powders until Hodgdon confirms otherwise.

Colorado Cajun

I just emailed Hogden. I will post the reply when I get one.

Scott Gags

I have used RL22 for 180 and 200 grain bullets but never tried it at 165. My 180s were highly compressed so I did not even try it with 168s.

I have since switched to RL17 and it outperforms RL22 at all bullet weights. It has higher velocities and groups better than either IMR 4350 or RL22.

I am loading 168 grain ballistics tips with 59 grains RL 17 (max) to 3012 fps and groups are typically 3/4". This is 100FPS faster than I could get with 4350. Quickload estimates pressure at 65,000psi so this is only safe in rifles also chambered in 270 winchester.

HEAD0001

I use RL22 in my 30-06 Encore barrel. I picked up an extra 100 fps with the powder. I lke it. I use the 165 grain Nosler BT bullet for deer. I got the load from the Nosler web site. Works good for me. But it is a case full of powder. I like that. Tom.

Colorado Cajun

Here is the reply I got back from Hodgdon if anyone is interested.

IMR 4350 is made in Canada, H4350 is made in Australia. The IMR4350 has bigger kernel size a different density, different burn speed and different data from the H4350. They are definitely not the same powder.

Blackelk

That's odd I know that IMR 4831 is smaller in kernel(per grain) than H4831 I have never compared IMR4350 and H4350. I actually have became a fan of the slower Hogden powder but it hangs up the charge bar more than IMR. But that's a simple cure dump the case and go again. I have great accuracy using H4831 and 165's bullets in my 300 win mag loading a few tenths below max. The bullet is sitting almost on top the powder when shaken you can barely hear anything move inside.

Blackelk

Oh yeah just reminded myself of something.

The difference between H4831 and H4831SC is enough you can't replace it and use the same loading data and have the same results on velocity and impact of the bullet. All they did is cut the H4831SC down in length of grain and made it flow better through a powder measure. It becomes more compacted and changes the volume in the case. Volume vs weight is a whole other debate I'm sure. The short cut can easily make hotter loads because it simply stacks in the case better and get more of it in there.

In a 30-06 case give the H4831SC a try. I load IMR 4831 in the 270 win loads I use. It could be an option for your 30-06 but you probably can't beat the 4350 loads you already have made. I'd load a lot of different loads until you find that one accurate load that is as good as it will ever get. Plus a few tenths of a grain + or - can change accuracy a lot. I tried to simplify a load to 77.7 grains and it would not shoot as well as 77.3 as crazy as it sounds that .4 of a grain made the difference of shooting a 1" group to stacking them right on top of each other.

I'm no expert reloading smith but just some of my findings along the way.

little indian

I use 61 gr of RL 22 behind a 165 gr nosler BT. It shoots great in my gun. A Browning Stainless Stalker.

Colorado Cajun

Thanks for the replies. After 2nd riffle season I'm going pick up some 165 Noslers BT's and try with RL22, Varget, and I'll try some IMR4350 again since I still have some before I buy other powder to try. Does anyone know if the Balistic Tips and Accubonds shoot the same? I'll try working a load with the BT's since they are cheaper then try that load with accubonds. It certainly didn't pan out that way shooting SST's and then trying Interbonds. I also want to work up a 165 gr. Partition load.

My goal is to have a target load and hunting load in 150gr, 165gr, and 180gr. I'm happy in the 180 gr. area for now.

Colorado Cajun

Well, I picked up a box of 165 gr. Ballistic Tips and gave them a try with Reloader 22 and IMR 4350 since that is what I have. The groups I got with both powder sucked. They were about 2 - 4 inch groups, high, and right from what I get with 180 gr prohunters and partitions using the same powder. I have not yet got any 165's to shoot good except SST's using varget and I usually have one flier shooting a 3 shot group.

What do you guys think? Try a new powder? I'm thinking my next one to try will be IMR4064 because it seems popular on the internet for 3006 and it is available.
Thanks,
Mitch