H4350 vs IMR4350, any reason to pick one over the other?

Fox

Fox

CGN Ultra frequent flyer
Rating - 100%
49   0   0
Location
Kemptville
My local guy can get IMR 4350 about $10/lb less than H4350, is there any reason to use H4350 over IMR 4350 for 30-06 180gr?

I have not built up a load yet, working on doing that after deer hunting in the fall but would like to get my components together.

Thanks
 
They have slightly different burn rates. Which is better is up to the gun to decide. No harm in buying the cheaper product, I did. Imr4350 and a 150gr partition in my 270 shoots under an inch.

5ijsVuQ.jpg
 
To the right of the powder type below is the amount of fps change for each degree of temperature change.
The "H" prefix powders are made in Australia for Hodgdon's Extreme line of powders and are more temp stable.
And as a example the U.S. military switched from RL-15 a double base powder to IMR-4064 in their long range sniper ammunition.
And this was because of the large temperature swings in Iraq and Afghanistan. (see chart below)

33XPgx3.jpg
 
about 40 years ago i went with imr 4350 because in this area all the hodgdon was hard to come by and i could go to several shops in my area and purchase imr. never changed.
 
bigedp51 said:
To the right of the powder type below is the amount of fps change for each degree of temperature change.
The "H" prefix powders are made in Australia for Hodgdon's Extreme line of powders and are more temp stable.
And as a example the U.S. military switched from RL-15 a double base powder to IMR-4064 in their long range sniper ammunition.
And this was because of the large temperature swings in Iraq and Afghanistan.
Click to expand...

So 25fps if I build a load in the late fall and hunt with it is in the heat of summer, that is still pretty stable to me, not planning on running close to book max for the 7600.

I was wondering what "Temperature Sensitive" really meant, building a deer hunting load in the fall/spring for the fall hunt is almost perfect in Canada.

Even the IMR4831 that I have setup for the 6.5x55mm does not really have much of a change.

I will run it by pops, I do not think it will matter much, even $10 on 130+ rounds, not really that much of a cost.

I am not buying both powders, no need to collect powders when building a deer/moose hunting load.
 
If you are going to the trouble of developing a load, I would use the H4350. That way what ever you find that works well in your rifle will still work well if the hunting day turns out to be unusually hot or cold. I have had fall hunts that were much colder or warmer than usual.

Some other suggestions:

Once you have picked a load, try the same load with 0.5 more and less powder (unless you already covered that in your load development. You want a load that is not on the ragged edge of being too mild or too hot to perform.

Also, cycle all your hunting rounds through the magazine and chamber. If you find some rounds that don't extract easily, put them aside for practice shooting.

These two suggestions are based on things I learned the hard way.
 
Given hunting ranges under 500 yrds, the temperature sensitive thing is more marketing than anything else.
In my experience, hodgdon and alliant powders have more lot to lot burn rate variances than the imr labels.
 
I just checked my favourite powder retailer's price list and the price for each of these powders, H4350 & IMR4350, is identical for both 1 and 8lb amounts at $35 and $255 respectively. I also checked my second most favourite dealer and IMR4350 is listed at $36.50 and $270 in those same amounts but H4350 is listed as OUT OF STOCK.
 
rick357 said:
I just checked my favourite powder retailer's price list and the price for each of these powders, H4350 & IMR4350, is identical for both 1 and 8lb amounts at $35 and $255 respectively. I also checked my second most favourite dealer and IMR4350 is listed at $36.50 and $270 in those same amounts but H4350 is listed as OUT OF STOCK.
Click to expand...

Your retailer is cheaper than mine but I ordered the H4350 anyway.

7 cents a round but no concern about developing the load in the cold and then having the pressure spike in a hot fall.
 
Temperature stability aside I would try both and use the one that shoots best in my rifle.
Do your final sight adjustments close to the season you will be hunting and you are good to go.
No sense in using any powder unless it works well in your rifle.
BB
 
rick357 said:
I just checked my favourite powder retailer's price list and the price for each of these powders, H4350 & IMR4350, is identical for both 1 and 8lb amounts at $35 and $255 respectively. I also checked my second most favourite dealer and IMR4350 is listed at $36.50 and $270 in those same amounts but H4350 is listed as OUT OF STOCK.
Click to expand...

Who are you buying from?
 
You must log in or register to reply here.
Back
Top Bottom