The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools Search this Thread
Old January 15, 2005, 05:44 PM   #1
arthurrh
Senior Member
 
Join Date: December 2, 2004
Posts: 189
reloading .243 with Win 748 powder

Anyone ever reload the .243 Winchester with Winchester 748 powder? I can't seem to find any data on it, and I was curious about it. I have a lot of win 748 powder from my .223 and was thinking about trying it out.
arthurrh is offline  
Old January 15, 2005, 06:23 PM   #2
k in AR
Senior Member
 
Join Date: October 12, 1999
Location: Arkansas USA
Posts: 436
I checked all 5 of my (modern) reloading manuals (Speer, Nosler, Lyman, etc) and the free Winchester #15 manual that you get where they sell the powder. None of these list any loads for the 243 using 748.

*(edit) I just find one old Lyman manual from 1970 that list some 748 loads for the 243, but they list it as 748BR powder. I would be afraid that the formula has changed.

It really is strange that 748 isn't listed in the modern manuals for the 243 "at all". It is considered to be a good powder for medium rifle, i.e. 222, 223, 30-30, 308, etc., but when even Winchester won't give a load using it in 243.....

760 does seem to be a popular choice (in the manuals) if you want Winchester powder. Personally, back when I reloaded 243, my records showed that I always had good results with IMR 4350 and 4064, my bullet weights were 90 gr Spitzer or 100 gr boat tail.
Hope this helps. k

Last edited by k in AR; January 15, 2005 at 07:18 PM.
k in AR is offline  
Old January 17, 2005, 12:17 PM   #3
arthurrh
Senior Member
 
Join Date: December 2, 2004
Posts: 189
Yes, I saw the same thing in my manuals, lots of 760 listed for the .243, but the 748 recommended for .223, 30-30, and .308. It just seems strange to me that a powder would be good for the .223 and the .308 but not the .243.

I even went back to my old Ackley books, etc and didn't find anything. Oh well, maybe one day when I'm bored I'll try working up a load just to see how well it works.
arthurrh is offline  
Old January 17, 2005, 12:43 PM   #4
Leftoverdj
Senior Member
 
Join Date: October 15, 2004
Posts: 934
WW 748 is too fast for the .243 with all but the lightest bullets. A look at an older Hodgdon's pamphlet shows a max charge of 40 grains of H335 under a 75 grain bullet and a top charge of 36 grains under a 85.

H335 started as surplus WW 748 and I have interchanged data for 25 years without untoward events. My experience has convinced me that they are the same thing within lot-to-lot variance. I would not hesitate to cut the above loads by 4 grains and start my workup process with WW 748 from there.

That's me. You're you, and the best judge of your own risk tolerance level. All the usual warnings apply.
Leftoverdj is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:41 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2021 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Page generated in 0.05122 seconds with 10 queries