Reply
 
LinkBack Thread Tools Display Modes
Old 04-29-2012, 18:03   #1
Full Member
Points: 1,961, Level: 26 Points: 1,961, Level: 26 Points: 1,961, Level: 26
Activity: 0% Activity: 0% Activity: 0%
Last Achievements
 
Join Date: Dec 2011
Posts: 69
Hornady 55 Grain SPSX

I am reloading for my 580 series Mini-14. I ordered 500 of these Super Explosive bullets a few months back... getting around to loading some but began to wonder about the caveat on these thin jacketed bullets in a 1:9 twist.

Similar in design and function to the standard Spire Point bullets, the Super Explosive Spire Points feature a thinner copper jacketed for even more rapid and devastating expansion on impact. Please note that these bullets cannot withstand velocities of greater than 3,500 fps. This is not loaded ammunition.

While I would be well under 3500 FPS.... would a 1:9 twist vs 1:12 used in load development for Hornady cause too much rotation or spin causing the same effect as too much velocity? I'd hate to just vaporize these lil guys.

Anyone out there using this bullet in a Ranch Rifle with 1:9 twist?

This warning was on Midway USA's website... however... I can't find this warning in the 2012 Hornady catalog or the 8TH Edition Hornady Reloading manual or on the boxes that these bullets come in. Odd?
Jim Duncan is offline   Reply With Quote
Old 05-03-2012, 14:06   #2
Full Member
Points: 1,961, Level: 26 Points: 1,961, Level: 26 Points: 1,961, Level: 26
Activity: 0% Activity: 0% Activity: 0%
Last Achievements
 
Join Date: Dec 2011
Posts: 69
I was contacted by Hornady concerning my written request for clarification on this SX bullet. If anyone is interested I can pass it on.
Jim Duncan is offline   Reply With Quote
Old 05-05-2012, 09:13   #3
Full Member
Points: 15,381, Level: 80 Points: 15,381, Level: 80 Points: 15,381, Level: 80
Activity: 1.5% Activity: 1.5% Activity: 1.5%
Last Achievements
 
Join Date: Nov 2003
Posts: 1,577
I really doubt a 1/9 twist is too excessive as long as the bullet is under the 3500 FPS. Unless you go to some really hot max loads I think the best you are going to safely get out of the Mini is around 3200 fps. Anything above that and you are pushing your luck pressure wise. I have shot the SX's out of my Mini's and AR's and they survived to the target without issue at around 3100 FPS. kwg
kwg020 is offline   Reply With Quote
Old 05-07-2012, 06:55   #4
Full Member
Points: 1,961, Level: 26 Points: 1,961, Level: 26 Points: 1,961, Level: 26
Activity: 0% Activity: 0% Activity: 0%
Last Achievements
 
Join Date: Dec 2011
Posts: 69
Originally Posted by kwg020 View Post
I really doubt a 1/9 twist is too excessive as long as the bullet is under the 3500 FPS. Unless you go to some really hot max loads I think the best you are going to safely get out of the Mini is around 3200 fps. Anything above that and you are pushing your luck pressure wise. I have shot the SX's out of my Mini's and AR's and they survived to the target without issue at around 3100 FPS. kwg
Thanks for that info, kwg... thats what I was hoping to hear. I was told pretty much the same thing by Hornady. So I plan to stay around 3000 FPS and do some testing. Seems like a really nice round from the reviews I've read.
Jim Duncan is offline   Reply With Quote
Old 05-10-2012, 17:25   #5
Full Member
Points: 39,949, Level: 100 Points: 39,949, Level: 100 Points: 39,949, Level: 100
Activity: 13.6% Activity: 13.6% Activity: 13.6%
Last Achievements
 
tri70's Avatar
 
Join Date: Oct 2003
Location: Arkansas
Posts: 8,640
I love shooting the SPX bullets, I shoot them with 21.5 gr RL7. I chronoed the loads at 3100 fps in my target mini.
__________________
" If our greatest need had been pleasure, God would send an entertainer..... our greatest need was forgiveness, so God sent a Savior."
tri70 is online now   Reply With Quote
Reply

Bookmarks

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 19:27.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.1
All information is copyright by Perfectunion.com unless already under copyright.

This site is Gunny Approved