The Firing Line Forums

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

Reply
 
Thread Tools
Old May 19, 2012, 07:33 PM   #1
Southboy
Junior Member
 
Join Date: October 13, 2011
Location: Central California
Posts: 9
Gunpowder

Does anyone know if H4831 and H4831sc have the same burn rates ? Does a
load for one powder apply to the other one also ?
Southboy is offline  
Old May 19, 2012, 09:00 PM   #2
Marco Califo
Senior Member
 
Join Date: April 4, 2011
Location: LA
Posts: 757
Yes

SC means short cut. Think of noodles. Meters better in smaller calibers. Otherwise identical. Google hodgons load data center.
__________________
........................................................
Marco Califo is online now  
Old May 19, 2012, 09:48 PM   #3
mrawesome22
Senior Member
 
Join Date: November 9, 2005
Location: Ohio, Appalachia's foothills.
Posts: 3,779
"H4831® & H4831SC®

It is probably safe to say more big game has been taken with H4831 than any other powder. Bruce Hodgdon was the first supplier to introduce this popular burning rate in 1950. Since that time it has become a favorite for cartridges like the 270 Winchester, 25-06 Remington, 280 Remington and 300 Winchester Magnum. As an Extreme Extruded propellant it shares the fine quality of insensitivity to hot/cold temperatures, as well as superb uniformity from lot to lot. H4831SC - Ballistically, this Extreme Extruded powder is the exact copy of H4831. Physically, it has a shorter grain size, therefore, the designation SC or short cut. The shorter, more compact kernels allow the powder to flow through the powder measures more smoothly, helping to alleviate the constant cutting of granules. With the smoother flow characteristics comes more uniform charge weights, while the individual grains orient more compactly, creating better loading density. Available in 1 lb. & 8 lb. containers. Take the exteme tour"

http://www.hodgdon.com/extreme.html

Sent from MIUI using Tapatalk 2.
mrawesome22 is offline  
Old May 21, 2012, 12:08 PM   #4
Southboy
Junior Member
 
Join Date: October 13, 2011
Location: Central California
Posts: 9
Gunpowder

Thanks to both of you that answered my question. That's exactly what i wanted to know.
Southboy is offline  
Old May 23, 2012, 07:11 PM   #5
Archie
Senior Member
 
Join Date: May 26, 2000
Location: Hastings, Nebrasksa - the Heartland!
Posts: 2,083
There's a caveat!

They are designed to be the same burning rate. However, burn rates do vary between lots of powder, so a 'maximum' charge with that 'old' lot of powder one had last year may be a bit over maximum with the new lot one bought this week.

I once - long ago when I was younger and didn't get enough sleep - used a new can of H4831sc in my 'heavy' load in an 'improved' .30-06. Chronographed a 200 grain Sierra SPBT at just over 3150 f/s. Nothing went really wrong, except I could decap the brass (only five rounds) by blowing into the case mouth. As best I could figure, it was running about 80,000 psi.

Not Hodgdon's fault, my fault for not pay attention to the powder change.
__________________
There ain't no free lunch, except Jesus.
Archie

Check out updated journal at http://oldmanmontgomery.wordpress.com/
Archie is offline  
Old May 26, 2012, 03:36 AM   #6
aushunter
Member
 
Join Date: June 7, 2009
Location: N.S.W AUSTRALIA
Posts: 42
As the guys are saying its just a shorter grain, the advantage would be you could slightly increase your case capacity if you wanted to because it would fill the case better.
aushunter is offline  
Reply

Thread Tools

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 01:45 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07620 seconds with 9 queries