Quarterbore.Net Forums


Go Back   Quarterbore's Forums > 300 Whisper Forums > 300 Whisper Ammo and Reloading
Home Forums Classifieds Photo Server FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 12-29-2010, 03:30 PM
fpjeepy05 fpjeepy05 is offline
Junior Member
 
Join Date: Nov 2009
Posts: 26
Sierra 125 SPT

Sierra Reloading manual shows Maximum load with AA#5 for a 125 gr. SPT to be 12.6gr. This produces 1800 fps out of a 10" Contender. Is this Maximum load based on pressure capacity of 221 Fireball brass or the contender frame? I ask because I have some #5 and I wanted to load up some hot rounds but I'd like to get at least 2200fps. 12.6gr is not a lot of powder. Bad idea?
Reply With Quote
  #2  
Old 12-29-2010, 06:41 PM
i8asquirrel i8asquirrel is offline
Senior Member
 
Join Date: Jul 2010
Location: oregon
Posts: 198
I would not think the limit is the contender frame when you think of some of the loads that people stuff through them.....I would think it was based on pressure curve for the powder and case cap.
Reply With Quote
  #3  
Old 12-30-2010, 10:18 AM
320pf 320pf is offline
Senior Member
 
Join Date: Jun 2006
Posts: 304
AA#5 is a bit too fast for the 300-221 Fireball*. A better choice of powder would be AA#9, H110, LilGun or W296. I have had the best results with W296.


I have posted some of the loads that I have worked up for the 300-221 Fireball here:

http://www.reloadersnest.com/frontpa...?CaliberID=135

Here are some results for H110

http://www.reloadersnest.com/unverif...ID=135&ID=3213


*Note: the 300-221 Fireball, 300 Whisper and 300 Blackout are all pretty much the same cartridge, with only slight variations in the neck dimension.

320pf
Reply With Quote
  #4  
Old 12-31-2010, 08:39 PM
fpjeepy05 fpjeepy05 is offline
Junior Member
 
Join Date: Nov 2009
Posts: 26
I found it.
52,000 for 221 Fireball brass
55,000 for 223 Rem Brass

So yeah AA#5 would be too fast with the 125s. But it does work beautifully in contender with 6grs under a 240 SMK.
Reply With Quote
Reply

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


All times are GMT -4. The time now is 09:05 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.