.357 Mag, 158 gr JHP w/ Unique Fans ?

Al57 · October 7, 2008, 04:58 PM

Does anyone else have a pet medium to medium heavy load ( 90 % or so ) they use in .357 magnum with Unique and the 158 gr. JHP ? Observations / velocity obtained ? Seeking about 1100 - 1150 FPS with this recipe from a 4 " Ruger GP100 . I've worked up to 7.5 grs, but still feels pretty mild, fired primers look great and cases almost fall out without touching the ejector rod. . Thanks

NAKing · October 7, 2008, 07:18 PM

Hey, another Nebraska guy! I use 7.5 grains of Unique in a 4" Taurus. It's not light, but not even quite as heavy as Magtech box ammunition. My understanding is that if you want heavy loads you need to use a slower powder (like H110) with magnum primers. 7.5 grains of Unique is near max (my book states 7.7 as max). Somebody more experienced can correct me if I'm wrong.

P.S. I load my plinking stuff to 7 grains. I began having accuracy issues approaching 6.5 grains.

tom234 · October 7, 2008, 08:58 PM

What does your current load chronograph ? Alliant lists the 158gr JHC loaded with 7.8 gr Unique [max] at 1280 FPS in a 5.6" barrel. If you're not getting the FPS you seek you might want to go with a slower powder like Herco or Blue Dot.

Scorch · October 7, 2008, 09:10 PM

I use 7.7 gr of Unique under a 158 gr JHP for about 1,150 fps out of a 6" revolver.

Al57 · October 8, 2008, 09:05 AM

Thanks all .

October 7, 2008, 04:58 PM	#1
Al57 Member Join Date: December 5, 2006 Location: Nebraska Posts: 69	.357 Mag, 158 gr JHP w/ Unique Fans ? Does anyone else have a pet medium to medium heavy load ( 90 % or so ) they use in .357 magnum with Unique and the 158 gr. JHP ? Observations / velocity obtained ? Seeking about 1100 - 1150 FPS with this recipe from a 4 " Ruger GP100 . I've worked up to 7.5 grs, but still feels pretty mild, fired primers look great and cases almost fall out without touching the ejector rod. . Thanks

October 7, 2008, 09:10 PM	#4
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,248	I use 7.7 gr of Unique under a 158 gr JHP for about 1,150 fps out of a 6" revolver. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

October 7, 2008, 07:18 PM	#2
NAKing Senior Member Join Date: August 12, 2008 Posts: 304	Hey, another Nebraska guy! I use 7.5 grains of Unique in a 4" Taurus. It's not light, but not even quite as heavy as Magtech box ammunition. My understanding is that if you want heavy loads you need to use a slower powder (like H110) with magnum primers. 7.5 grains of Unique is near max (my book states 7.7 as max). Somebody more experienced can correct me if I'm wrong. P.S. I load my plinking stuff to 7 grains. I began having accuracy issues approaching 6.5 grains.

October 7, 2008, 08:58 PM	#3
tom234 Senior Member Join Date: February 14, 2008 Location: Kansas Posts: 753	What does your current load chronograph ? Alliant lists the 158gr JHC loaded with 7.8 gr Unique [max] at 1280 FPS in a 5.6" barrel. If you're not getting the FPS you seek you might want to go with a slower powder like Herco or Blue Dot.

October 8, 2008, 09:05 AM	#5
Al57 Member Join Date: December 5, 2006 Location: Nebraska Posts: 69	Thanks all .