Any IMR 4320 lovers out there?

jepp2 · September 2, 2014, 08:10 PM

I load for a wide variety of calibers and have tended to favor IMR powders. I have never used 4320 much, and just would like to know what calibers/bullet weights you have found 4320 to perform well in. Don't need powder loadings, just would like to hear about your positive experiences.

Bart B. · September 2, 2014, 09:19 PM

308 Wimchester with 190 HPMK's over IMR4320 won a lot of matches.

mxjunky78 · September 2, 2014, 10:43 PM

.308 with 168gr Sierra hpbt. 1.5" at 300yds

Hunter Customs · September 3, 2014, 07:42 AM

I use it in my Savage bolt action 223, it's a compressed charge topped off with a Sierra 55 gr BTHP bullet.
The rifle and load will shoot 5/16th inch groups at 100 yards with great consistency as long as I do my job.
I've also used it in my 22-250 and 300 Savage, had great results with it in both of those rifles also.

Best Regards
Bob Hunter
www.huntercustoms.com

BumbleBug · September 3, 2014, 07:53 AM

This is my first choice powder for hunting loads in the odd-6

FWIW...

...bug

hivel37 · September 3, 2014, 08:05 AM

Very good for 22-250 loading. A can't-go-wrong powder.

Scorch · September 4, 2014, 03:43 AM

Any of the X57mm cases (6mm Rem, 257 Roberts, 7X57, 8X57, 9X57), and also works for the 22-250, 300 Savage, probably 308 as well. Slightly faster than IMR4350, slightly slower than IMR3031.

TheNatureBoy · September 4, 2014, 05:01 AM

I have a custom built .243 that shoots lights out with 4320 and a 100 grain pill.

JT-AR-MG42 · September 4, 2014, 05:11 AM

Absolutely my powder of choice in .219 Zipper.
It is also my preferred powder in .35 Remington, .35 Winchester, and the .348 Winchester.

Have not seen any for sale in some time, just lots of 4064.

JT

ligonierbill · September 5, 2014, 02:03 PM

Not until today. I bought some IMR-4320 because I couldn't find Reloder 15 for my Savage 99. Haven't tested those yet, but I found today it does very well in a 7.5x55 K-31. Did not get chrono reads (long story), but I did put all 20 in the '7' ring from 100 with the standard military sights. It gets better. My 22-250 loves 40 grain Nosler BT, but I haven't been able to get anything great out of 55's. Tried the 4320 and put 5-55 SGK in 5/8", at 3,675 avg. Yeah, I like this stuff. (And I did find some Re-15.)

September 2, 2014, 08:10 PM	#1
jepp2 Senior Member Join Date: December 24, 2008 Location: Loveland, CO Posts: 1,476	Any IMR 4320 lovers out there? I load for a wide variety of calibers and have tended to favor IMR powders. I have never used 4320 much, and just would like to know what calibers/bullet weights you have found 4320 to perform well in. Don't need powder loadings, just would like to hear about your positive experiences. __________________ NRA Benefactor Life member

September 3, 2014, 07:53 AM	#5
BumbleBug Senior Member Join Date: March 11, 2013 Location: Near Heart of Texas Posts: 870	.30-06 with 150gr bullets This is my first choice powder for hunting loads in the odd-6 FWIW... ...bug

September 4, 2014, 03:43 AM	#7
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,248	Any of the X57mm cases (6mm Rem, 257 Roberts, 7X57, 8X57, 9X57), and also works for the 22-250, 300 Savage, probably 308 as well. Slightly faster than IMR4350, slightly slower than IMR3031. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

September 2, 2014, 09:19 PM	#2
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	308 Wimchester with 190 HPMK's over IMR4320 won a lot of matches.

September 2, 2014, 10:43 PM	#3
mxjunky78 Member Join Date: August 2, 2012 Posts: 61	.308 with 168gr Sierra hpbt. 1.5" at 300yds

September 3, 2014, 07:42 AM	#4
Hunter Customs Senior Member Join Date: March 26, 2005 Location: Osborn, Missouri Posts: 2,697	I use it in my Savage bolt action 223, it's a compressed charge topped off with a Sierra 55 gr BTHP bullet. The rifle and load will shoot 5/16th inch groups at 100 yards with great consistency as long as I do my job. I've also used it in my 22-250 and 300 Savage, had great results with it in both of those rifles also. Best Regards Bob Hunter www.huntercustoms.com

September 3, 2014, 08:05 AM	#6
hivel37 Senior Member Join Date: August 24, 2004 Location: Hill Country Posts: 522	Very good for 22-250 loading. A can't-go-wrong powder.

September 4, 2014, 05:01 AM	#8
TheNatureBoy Senior Member Join Date: September 6, 2007 Posts: 1,204	I have a custom built .243 that shoots lights out with 4320 and a 100 grain pill.

September 4, 2014, 05:11 AM	#9
JT-AR-MG42 Senior Member Join Date: December 27, 2008 Posts: 555	Absolutely my powder of choice in .219 Zipper. It is also my preferred powder in .35 Remington, .35 Winchester, and the .348 Winchester. Have not seen any for sale in some time, just lots of 4064. JT

September 5, 2014, 02:03 PM	#10
ligonierbill Senior Member Join Date: May 20, 2007 Posts: 2,448	Not until today. I bought some IMR-4320 because I couldn't find Reloder 15 for my Savage 99. Haven't tested those yet, but I found today it does very well in a 7.5x55 K-31. Did not get chrono reads (long story), but I did put all 20 in the '7' ring from 100 with the standard military sights. It gets better. My 22-250 loves 40 grain Nosler BT, but I haven't been able to get anything great out of 55's. Tried the 4320 and put 5-55 SGK in 5/8", at 3,675 avg. Yeah, I like this stuff. (And I did find some Re-15.)