748 for 7mm Rem Mag?

RWJOHN · May 31, 2010, 11:51 AM

Hi all. Really like the forum and all the experience in reloading here. I purchased a used RCBS Rockchucker with plenty of goodies from an older gentleman about 16-17 years ago and have never regretted it. In fact, one of the best investments I've ever made. A great hobby and saves money as well. Can't beat that.
I load for 7mm Rem Mag, Ruger Model77 MkII, and have always used IMR 4831. I am pleased with this powder and it seems to give good performance as well as accurate out of my rifle. I know there are many suitable powders for 7mm but my question is this. Can 748 be safely loaded in 7mm Rem Mag?
I've searched but have not found a recipe for this combination. That probably answers my own question but perhaps someone out there has an old recipe from years gone by. My reason for asking is I have a pound of 748 and nothing to use it in. The loads would only be used for plinking and velocity/accuracy are not a major concern in this case.
All responses are welcome, even some bashing and head slapping if needed. I'm new here so I'm willing to pay my dues.

peace

RJ

Jim Watson · May 31, 2010, 11:55 AM

748 is pretty "fast" for 7mm R.M.
I think I'd try to swap that one can off for something more suitable instead of trying to force it.

Maybe someone will come along with a "recipe."

oneounceload · May 31, 2010, 12:22 PM

My 7mag also prefers 4831 - where I found a use for 748 was in my XP-100 chambered in 7mm BR - a much shorter and milder cartridge

oneoldsap · May 31, 2010, 07:15 PM

748 isn't suitable for magnum Cartridges . I really doubt that you will find any data that says otherwise .

GP100man · May 31, 2010, 07:44 PM

I got some slow rifle powders , reloader 17 & 760 a couple others pushed back in the cabinet.

Face to face trade ????

I`m down here next to North Mytrle Beach SC but just in NC .

GeauxTide · May 31, 2010, 08:37 PM

748 was originally developed for the 308 Winchester for military spec loads in SA and FA rifles. Stick with the 4831s for bullets 150 and heavier.

RWJOHN · June 3, 2010, 03:58 PM

Thanks for the replies. I don't plan on doing anything experimental with the 748. I like my fingers,eyes, nose, and big ears too much! Not to mention my rifle. Just thinking that since 748 has been around for a while that maybe someone had heard of such a combo. My Speer no. 10 & 11 manuals have some loads using IMR 4895 which is close to 748 in the burn rate charts of my Speer and Hornady manuals. And some charts I found online actually have IMR 4895, H 4895, IMR 4320, and IMR 4064 as faster than 748.

I'm thinking case volume is a big factor here.

Thanks for the trade offer GP100man. I'm currrently in the Charlotte area so that would be a long distance face to face. I'm somewhat of a GP100 man myself. I have a 4" stainless I purchased in the early 90's. This gun is the one I originally started reloading for.

Well, I'm about out of IMR 4831. Thinking I'll try and get some this weekend. Also thinking of trying RL-22. Seems a lot of folks like it for their 7's.

Peace

RJ

ForneyRider · June 4, 2010, 02:40 PM

I use R22 for 120-162gr bullets.

I've used 4064 and 4350 with excellent results with 120gr.

May 31, 2010, 11:51 AM	#1
RWJOHN Member Join Date: May 4, 2010 Location: NC & SC Posts: 41	748 for 7mm Rem Mag? Hi all. Really like the forum and all the experience in reloading here. I purchased a used RCBS Rockchucker with plenty of goodies from an older gentleman about 16-17 years ago and have never regretted it. In fact, one of the best investments I've ever made. A great hobby and saves money as well. Can't beat that. I load for 7mm Rem Mag, Ruger Model77 MkII, and have always used IMR 4831. I am pleased with this powder and it seems to give good performance as well as accurate out of my rifle. I know there are many suitable powders for 7mm but my question is this. Can 748 be safely loaded in 7mm Rem Mag? I've searched but have not found a recipe for this combination. That probably answers my own question but perhaps someone out there has an old recipe from years gone by. My reason for asking is I have a pound of 748 and nothing to use it in. The loads would only be used for plinking and velocity/accuracy are not a major concern in this case. All responses are welcome, even some bashing and head slapping if needed. I'm new here so I'm willing to pay my dues. peace RJ

May 31, 2010, 07:44 PM	#5
GP100man Senior Member Join Date: August 1, 2007 Location: Tabor City , NC. Posts: 1,969	Location ??? I got some slow rifle powders , reloader 17 & 760 a couple others pushed back in the cabinet. Face to face trade ???? I`m down here next to North Mytrle Beach SC but just in NC . __________________ GP100man

June 4, 2010, 02:40 PM	#8
ForneyRider Senior Member Join Date: December 4, 2007 Location: Forney, TX Posts: 725	I use R22 for 120-162gr bullets. I've used 4064 and 4350 with excellent results with 120gr. __________________ When all is said and done, there is a lot more said than done.

May 31, 2010, 11:55 AM	#2
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,547	748 is pretty "fast" for 7mm R.M. I think I'd try to swap that one can off for something more suitable instead of trying to force it. Maybe someone will come along with a "recipe."

May 31, 2010, 12:22 PM	#3
oneounceload Junior member Join Date: April 18, 2008 Location: N. Central Florida Posts: 8,518	My 7mag also prefers 4831 - where I found a use for 748 was in my XP-100 chambered in 7mm BR - a much shorter and milder cartridge

May 31, 2010, 07:15 PM	#4
oneoldsap Senior Member Join Date: September 16, 2009 Location: I live in the foot of the Green Mountains of Vermont Posts: 1,602	748 isn't suitable for magnum Cartridges . I really doubt that you will find any data that says otherwise .

May 31, 2010, 08:37 PM	#6
GeauxTide Senior Member Join Date: April 20, 2009 Location: Helena, AL Posts: 4,426	748 was originally developed for the 308 Winchester for military spec loads in SA and FA rifles. Stick with the 4831s for bullets 150 and heavier.

June 3, 2010, 03:58 PM	#7
RWJOHN Member Join Date: May 4, 2010 Location: NC & SC Posts: 41	Thanks for the replies. I don't plan on doing anything experimental with the 748. I like my fingers,eyes, nose, and big ears too much! Not to mention my rifle. Just thinking that since 748 has been around for a while that maybe someone had heard of such a combo. My Speer no. 10 & 11 manuals have some loads using IMR 4895 which is close to 748 in the burn rate charts of my Speer and Hornady manuals. And some charts I found online actually have IMR 4895, H 4895, IMR 4320, and IMR 4064 as faster than 748. I'm thinking case volume is a big factor here. Thanks for the trade offer GP100man. I'm currrently in the Charlotte area so that would be a long distance face to face. I'm somewhat of a GP100 man myself. I have a 4" stainless I purchased in the early 90's. This gun is the one I originally started reloading for. Well, I'm about out of IMR 4831. Thinking I'll try and get some this weekend. Also thinking of trying RL-22. Seems a lot of folks like it for their 7's. Peace RJ