imr 4895 questions

A

ameliafoxkiller

New member
Found some imr 4895 laying around and worked a load up for my 243 was highly pleased with results. My question is. Is this powder temp sensitive if so how bad i looked on imr and hodgon site nothing about being sensitive thanks for any help.
 
I have used IMR 4895 for years in Ohio summer groundhog hunting...[223,22/250] it works fine. Just work up a safe load in the summer, and then you won't have any problems.

A "safe" load is one that is 1 grain below book maximum, (with any powder) as this give you an additional safety margin as to excessive pressure.

Obviously, any powder at maximum will not benefit from lying on your vehicle dashboard for 5 hours on a 100 degree summer day...

Good Hunting!
 
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IMR 4895 is not temperature sensitive. It was originaly developed for military 30 caliber ammunition. Military ammunition has to function in all temperature ranges. I think the firearm you intend to use it in probably will function with whatever safe load you work up. Remember, I said safe.
 
Originally Posted By: etmciIMR 4895 is not temperature sensitive. It was originaly developed for military 30 caliber ammunition. Military ammunition has to function in all temperature ranges. I think the firearm you intend to use it in probably will function with whatever safe load you work up. Remember, I said safe.
Wasn't it Hodgden 4895 that has a military history? If I recall, there is a story about how IMR4895 came to be. Just remember that the load data for one is NOT the same for the other.
 
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Originally Posted By: KenlguyOriginally Posted By: etmciIMR 4895 is not temperature sensitive. It was originaly developed for military 30 caliber ammunition. Military ammunition has to function in all temperature ranges. I think the firearm you intend to use it in probably will function with whatever safe load you work up. Remember, I said safe.
Wasn't it Hodgden 4895 that has a military history? If I recall, there is a story about how IMR4895 came to be. Just remember that the load data for one is NOT the same for the other.

IMR-4895 (made by DuPont in Wilmington, Delaware) was the original powder for the 30-06 w/150 and 172 bullets, and the first to appear on the surplus market after WW-II.

The H-4895 was never a surplus powder - it is newly made after the supply of surplus 4895 dried up.

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PM was started around mid 2001 if I remember reading it in the past. I have seen some posts where the guys have 2001 memberships and I have clicked on there profile and it shows there member number really low number. I would look it up now but I have a few other things I have to get done today.
 
IMR-4895 and H-4895 are the same powder today. They are both produced by Hodgdon and marketed under both names. Hodgdon owns IMR and Winchester brands.
 
Originally Posted By: etmciIMR-4895 and H-4895 are the same powder today. They are both produced by Hodgdon and marketed under both names. Hodgdon owns IMR and Winchester brands.

Not true.

They have different burning speeds - and are produced in different countries.

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Originally Posted By: etmciIMR-4895 and H-4895 are the same powder today. They are both produced by Hodgdon and marketed under both names. Hodgdon owns IMR and Winchester brands.

Wrong, they are not the same powder. As Catshooter pointed out they have different burn rates. You cannot use the data from one for the other. Information like that can get people hurt.
 
Originally Posted By: KenlguyFound it
http://www.hodgdon.com/history.html

That article shows that H4895 was not the first 4895 used by the military. It says he "BOUGHT" 50,000 of surplus 4895. That shows he did not make it.

"Even though he had no place to store gunpowder, and did not know if enough shooters would gamble to purchase unknown types of propellant, Bruce cut government red tape and soon owned 50,000 pounds of government surplus 4895."
 


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