Go Back   The Hunter's Life > GUNS & AMMO > RELOADING
Thread Tools Display Modes
Prev Previous Post   Next Post Next

Modern Smokeless 577/450 loads
Old 08-05-2007, 10:28 AM
kombi1976's Avatar
kombi1976 kombi1976 is offline
Senior Family Member
Join Date: Oct 2004
Location: NSW, Australia
Age: 45
Posts: 3,290
kombi1976 is on a distinguished road
Default Modern Smokeless 577/450 loads

There has been much discussion on a number of occasions both on this list and on others about the possible power of the 577/450 cartridge using modern smokeless powders, modern 458 cal barrels and bullets and Martini actions with smaller firing pins and sleeved firing pin holes.
Now, since I have a Martini Enfield action which is practically the same as the MH action with the exception of the extractor and reduced firing pin, surely the old 450 case could be pushed up to and over 40,000 psi, almost to 45k, which is the safe limit for 303 ammunition.
Could someone run some figures in QuikLOAD or a similar program to estimate exactly which powders would suit (please include ADI powders like AR2207) so that I could get an idea of the possibilities of such a set up?
Oh, and could you calculate it on a 480gr or 500gr bullet.
Cheers & God Bless
22lr ~ 22 Hornet ~ 25-20 ~ 303/25 ~ 7mm-08 ~ 303 British ~ 310 Cadet ~ 9.3x62 ~ 450/400 N.E. 3"

Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
The Modern Hunter Jay Edward (deceased) HUNTING AFRICA 6 09-02-2008 12:52 AM
A Pair Of Modern Winchester .38-55s Jay Edward (deceased) FIREARMS & OPTICS 5 03-20-2006 12:36 PM
.45-70 Smokeless Range Report. gitano RELOADING 4 04-13-2005 12:35 AM
Anyone have smokeless Loads for 45-90 callier RELOADING 4 02-15-2005 08:22 AM
Modern US History & Law - Right to a Jury Kit THE HISTORY BUFFS CORNER 0 12-26-2004 12:53 AM

All times are GMT -5. The time now is 07:25 AM.

vBulletin skin developed by: eXtremepixels
Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.