which 4350 meters beter: IMR or Hodgon

[Matthew T.]

In your experience, will Hodgon 4350 have fewer sheared granules than IMR 4350 in a Lee Perfect Powder Measure? Thanks in advance.

 

[chris allen]

4530

If you use H4530 SC it will meter better.SC stands for short cut, which means the powder kernels are cut .It still has the same burn rate as H4530 but they cut the powder kernels are shorter , therfore they run thru a measure more easily. Both powders are made by Hodgon so if you are wondering check out their web.

hope this helps

 

[BsChoy]

didn't know they made 4350SC I thought only 4831SC? Hodgdon does have smaller granules in any event from my experience.

 

[Slamfire]

For the old long grained stuff, I have AA4350, H4350 and IMR 4350. They all throw so poorly that charges have to be weighed. Unless you are happy with 1.0 to 1.5 grains variation between charges.

The fact that this excellent powder took maybe 75 years before a short cut version was introduced just shows how unresponsive the powder makers are to the market. I do not see any reason to buy a long grained version of any powder. I only did because that was the only choice.

Short cut is better, the shorter the cut, the better it is.

 

[nitesite]

chris allen nailed it.

If you use H4530 SC it will meter better.SC stands for short cut, which means the powder kernels are cut .It still has the same burn rate as H4530 but they cut the powder kernels are shorter , therfore they run thru a measure more easily.

I use it for some amazing .243 Winchester loads.

I do, however, have an advantage over some. I weigh every charge thru a Lyman 1200DPS-II digital powder system. Amazing........

 

[Ol` Joe]

In your experience, will Hodgon 4350 have fewer sheared granules than IMR 4350 in a Lee Perfect Powder Measure? Thanks in advance

http://www.quick-measure.com/ No more cut powder and very consistant. The Hodgdon "SC" or "SSC" powders do live up to their name though and measure better then the IMR, Accurate or other long grained powders.

 

[BigJakeJ1s]

The fact that this excellent powder took maybe 75 years before a short cut version was introduced just shows how unresponsive the powder makers are to the market. I do not see any reason to buy a long grained version of any powder. I only did because that was the only choice.

Actually, it is incredibly difficult to take a given powder formula and kernel size/shape, and replicate its burn properties in a smaller kernel size. Size and shape of kernels affects burn rate and progressiveness or digressiveness of the burn rate as it burns. To compensate, retarders can be applied, but they must have a controlled absorption rate into the kernels. Without retarders, the burn rate of a powder formula is a function of the surface area. Depending on the original shape of the kernel, the surface area changes as it burns differently. Spherical powders reduce in surface area as they burn, while rods and discs do so less quickly. Hollow rods burn from inside out and outside in (as well as from the ends), which results in even less change in surface area as the kernel burns.

With the numbers of different SC versions of powders coming out, it does seem as if some manufacturing technologies have emerged which make them easier to develop and manufacture.

Andy

 

[bigcim]

H4350 and IMR 4350 will theses two powders produce the same result? example thier are many different type of oil manufactures but 10w30 is 10w30, just a different brand. Does it apply to powder

 

[USSR]

H4350 and IMR 4350 will theses two powders produce the same result?

bigcim,

Yeah, both of these powders can be used for similar applications, but the amount you use to attain the same velocity/pressure will vary slightly. Do not replace a load developed with one powder with another without starting with a lighter charge and working up.

Don

 

[bigcim]

so 4350 is 4350 like my example right

 

[USSR]

so 4350 is 4350 like my example right

Only if your engine takes 4.9 quarts of one brand of 10w30, and 5.1 quarts with another.

Don

 

[bigcim]

Ok so if my reloading book states 60g of imr4350 and doesn't list H4350. its not OK to load 60g of H4350 because one might be more potent
got it

does the imr4350 come in a short cut

 

[USSR]

Ok so if my reloading book states 60g of imr4350 and doesn't list H4350. its not OK to load 60g of H4350 because one might be more potent
got it

You don't state what cartridge this load is for. If a reloading manual says 60gr of IMR4350 is a starting load, then yes, you can use 60gr of H4350 as a starting load. If the manual only lists a maximum load, reduce by 10% and work up from there.

does the imr4350 come in a short cut

No. IMR powders are now distributed thru Hodgdon, and only some of the Hodgdon powders are available as a short cut powder.

Don

 

[RidgwayCO]

As far as know, neither Hodgdon or IMR markets a "short cut" of 4350. From the Hodgdon web site:

"H4350: This Extreme Extruded propellant is a burning speed that has been known to shooters for decades. During that time, Hodgdon has modernized H4350 by shortening the grains for improved metering..."

I believe that Hodgdon says their version of 4350 is slightly slower than the others (Accurate, Hodgdon, and IMR all have their own versions of "4350").

 

[bigcim]

7mm rem mag
sako 75 stainless synthetic