4350
- Thread starter Snowbank!
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greenmtnguy
Member
Technically, no.
Different powders, such as IMR4198 and H4198 have sometimes been significantly different in max charge weights. Some have been closer to interchangeable, but it is different for different powders. The safest approach is to consider them as different powders, IMO.
Different powders, such as IMR4198 and H4198 have sometimes been significantly different in max charge weights. Some have been closer to interchangeable, but it is different for different powders. The safest approach is to consider them as different powders, IMO.
ArchAngelCD
Member.
Like said, no they are not the same just like the two 4895 powders are not the same, although they are very similar. IMR4350 is slightly faster than H4350 (IIRC). If you need data for one but only the other is listed (like in the Lyman manual) you can call or write Hodgdon. They are usually very helpful.
AABEN
Member
NO no powder is interchangeable They all have there burn rate some is close but use the chart for the powder you are loading. Yes you can use Hodgdon OR Accurate or IMR they are very close BUT use there load chart.You need some reloading books Lyman Lee Sierra thes 3 will do good for you Good Luck
I chronographed loads in the 270 Win and 30-06 with IMR 4350, AA4350, and H4350. Accurate Arms told me their AA 4350 was a copy of IMR 4350 and my results agree. Charge weight between the two give virtually identical velocities. My lot of H4350 takes one more grain of powder to achieve the same velocity as my IMR 4350 or AA4350 loads.
This could be just lot to lot variation. Manufacturer's have been relabeling the same powder and selling as something different for decades, so we really don't know if the lot data is different, because the powders are different, or whether it is a lot to lot difference.
Each powder lot is a little different from the last. Accurate Arms told me the industry standard was 10%.
All of these powders shot outstanding groups in my rifles, just have to jigger the loads, and a grain difference between powder brands is almost nothing. Starting loads will be close, but there will be velocity differences. Maximum loads with any of these powders is likely to be different, regardless of brand or lot. Also start low and work up. Going to manual maximum loads first off is always bad.
This could be just lot to lot variation. Manufacturer's have been relabeling the same powder and selling as something different for decades, so we really don't know if the lot data is different, because the powders are different, or whether it is a lot to lot difference.
Each powder lot is a little different from the last. Accurate Arms told me the industry standard was 10%.
All of these powders shot outstanding groups in my rifles, just have to jigger the loads, and a grain difference between powder brands is almost nothing. Starting loads will be close, but there will be velocity differences. Maximum loads with any of these powders is likely to be different, regardless of brand or lot. Also start low and work up. Going to manual maximum loads first off is always bad.
sage5907
Member
You can also add Reloader 17 into this discussion. Reloader 17 takes about 1 grain less than IMR 4350 to achieve the same result.
NeuseRvrRat
Member
There are some that are.
delrom418
Member
Such as:
W231 and HP-38
W296 and H-110
W748 and BLC(2)
300Whspr
Member
BLC2 is 748?
Didn't know that one.
Didn't know that one.
JimKirk
Member
W760 & H414 are the same...
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