What Is 'imr' Powder

SKULLANDCROSSBONES65 · November 14, 2008, 07:53 AM

G'day. I have a SPEER reloading manual # 11, It often references IMR **** powders. Are these the HODGDON powders that use the same numbers?

ShootingNut · November 14, 2008, 08:01 AM

IMR is one of Hodgdon's powders, if you haven't checked their loading data for all of their powders, here is a link http://data.hodgdon.com/main_menu.asp
Regards,
SN

jaguarxk120 · November 14, 2008, 08:13 AM

IMR references to Improved Military Powder. Sharpe makes reference to it as the first progressive-burning powder introduced in 1914.
Tom F.

Sevens · November 14, 2008, 08:20 AM

IMR was a powder make from quite a while back that changed hands a couple of times. When I started reloading in the 80s, they were owned by the DuPont Corp. And DuPont got them from someone else. Then someone else took them over from DuPont, and later, Hodgdon took them over. Or something like that.

The H powders with the same number as the IMR powders are similar but are NOT the same, though much of the data is quite similar. For sure, you can substitute the H powder for the IMR powder of the same number, but don't expect the same results.

Or, to put it another way, if you have a manual that tells you to get some IMR-4895 for your 8x57, you can use H4985 instead, but the data doesn't specifically apply, and you would need to get your max loads from Hodgdon.

F. Guffey · November 14, 2008, 08:34 PM

SKULLANDCROSSBONES65, and to you, and after reading the article you think he went overseas to get ideals for developing and making smokeless powder, you could be correct, or it could just be the way the information is presented.

http://www.cowart.info/Florida%20His...0Biography.htm

F. Guffey

November 14, 2008, 07:53 AM	#1
SKULLANDCROSSBONES65 Senior Member Join Date: August 19, 2008 Location: Far Nth Wst QLD Australia Posts: 992	What Is 'imr' Powder G'day. I have a SPEER reloading manual # 11, It often references IMR **** powders. Are these the HODGDON powders that use the same numbers? __________________ If you're not confused, you're not trying hard enough! When you're confused, I'll try to use smaller words!!!

November 14, 2008, 08:01 AM	#2
ShootingNut Senior Member Join Date: December 27, 2006 Location: Wisconsin Posts: 1,475	Skull IMR is one of Hodgdon's powders, if you haven't checked their loading data for all of their powders, here is a link http://data.hodgdon.com/main_menu.asp Regards, SN

November 14, 2008, 08:20 AM	#4
Sevens Senior Member Join Date: July 28, 2007 Location: Ohio Posts: 11,756	IMR was a powder make from quite a while back that changed hands a couple of times. When I started reloading in the 80s, they were owned by the DuPont Corp. And DuPont got them from someone else. Then someone else took them over from DuPont, and later, Hodgdon took them over. Or something like that. The H powders with the same number as the IMR powders are similar but are NOT the same, though much of the data is quite similar. For sure, you can substitute the H powder for the IMR powder of the same number, but don't expect the same results. Or, to put it another way, if you have a manual that tells you to get some IMR-4895 for your 8x57, you can use H4985 instead, but the data doesn't specifically apply, and you would need to get your max loads from Hodgdon. __________________ *Attention Brass rats and other reloaders:* I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.

November 14, 2008, 08:13 AM	#3
jaguarxk120 Senior Member Join Date: February 28, 2008 Location: Michigan Posts: 2,619	IMR references to Improved Military Powder. Sharpe makes reference to it as the first progressive-burning powder introduced in 1914. Tom F.

November 14, 2008, 08:34 PM	#5
F. Guffey Senior Member Join Date: July 18, 2008 Posts: 7,249	SKULLANDCROSSBONES65, and to you, and after reading the article you think he went overseas to get ideals for developing and making smokeless powder, you could be correct, or it could just be the way the information is presented. http://www.cowart.info/Florida%20His...0Biography.htm F. Guffey