Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics


Reply

.338 rocky mountain bullets?

 
LinkBack Thread Tools Display Modes
  #22  
Old 04-06-2009, 11:40 PM
Silver Member
 
Join Date: Aug 2008
Location: washington utah
Posts: 189
Re: .338 rocky mountain bullets?

wil a 1-10 twist be ok with thes bullets in 375?
Reply With Quote
  #23  
Old 04-07-2009, 09:32 AM
Junior Member
 
Join Date: May 2007
Location: Darby , Montana
Posts: 26
Re: .338 rocky mountain bullets?

Hello Travis,
Unfortunately I donít think the 10 twist will stabilize the 325-gr bullets. To get a stability factor of 1.5 you should at least have a twist of 9 and 8 would even be better. Having a stability factor of about 1.8 really help the bullets when they go subsonic and extended ranges.
Reply With Quote
  #24  
Old 04-07-2009, 09:47 AM
Junior Member
 
Join Date: May 2007
Location: Darby , Montana
Posts: 26
Re: .338 rocky mountain bullets?

Hello Bruce,
The 10 twist will be great on the .375 bullets. They call for a 11.4 twist to get a stability factor of 1.5 so the 10 twist should stabilize good through the subsonic transition at extended ranges.
Reply With Quote
  #25  
Old 02-11-2010, 07:41 PM
Silver Member
 
Join Date: Dec 2009
Posts: 214
Re: .338 rocky mountain bullets?

Quote:
Originally Posted by dave42 View Post
Thanks George,

Couldn't be better timing for a new .375 high B.C. bullet.

My new .375AM has just arrived here in Canada and I will have my hands on it soon (Stuck at work for another week until I can go get it). I will post some pics of one of Kirby's latest creations ASAP, maby a range report as well.

I was worried about choosing this caliber due to the lack of bullets. It appears now that this might be the caliber to beat with improved ballistics over the .408 and better barrel life than the .338 Cheytac wildcats.

It seems like I made the right choice after all, now to get my hands on some of these bullets.

Dave
Dave, have you shot these bullets yet? I wonder what they group like past 1500 yards>>>
Reply With Quote
  #26  
Old 02-11-2010, 07:47 PM
Silver Member
 
Join Date: Dec 2009
Posts: 214
Re: .338 rocky mountain bullets?

Quote:
Originally Posted by gfc91658 View Post
Hello Bruce,
The 10 twist will be great on the .375 bullets. They call for a 11.4 twist to get a stability factor of 1.5 so the 10 twist should stabilize good through the subsonic transition at extended ranges.

Hey there...are we talking about the 375 cal 370 gr rbtat bullet here? If not, what is the best twist for this 370 gr bullet??

kz
Reply With Quote
  #27  
Old 02-11-2010, 11:56 PM
Gold Member
 
Join Date: Sep 2003
Location: Nebraska
Posts: 811
Re: .338 rocky mountain bullets?

Kelly,
I will be testing the new design this weekend, Geo sent me some new heavier jacketed style.
They weigh right at 359.5gns
I will post the results when finished. I hope to stretch them out to 1200yds. I am going to try a slower powder burn so i can get the case full, 100% fill i am hoping for.

Dave
__________________
www.cowboy-dave.com

"Let the good times roll"
Reply With Quote
  #28  
Old 02-12-2010, 01:20 AM
Silver Member
 
Join Date: Dec 2009
Posts: 214
Re: .338 rocky mountain bullets?

Quote:
Originally Posted by Black Diamond 408 View Post
Kelly,
I will be testing the new design this weekend, Geo sent me some new heavier jacketed style.
They weigh right at 359.5gns
I will post the results when finished. I hope to stretch them out to 1200yds. I am going to try a slower powder burn so i can get the case full, 100% fill i am hoping for.

Dave
Dave, your header said 338 bullets...are you testing the 338 or the 375 cal this weekend??? I thought the 359 gr was the 375???
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: .338 rocky mountain bullets?
Thread Thread Starter Forum Replies Last Post
338 Rocky mountain bullets Rocky Mountain Long Range Hunting & Shooting 24 03-17-2014 10:05 AM
375 gr rocky mountain bullets kellyzier Rifles, Bullets, Barrels & Ballistics 3 11-08-2013 09:53 AM
WTB Rocky Mountain Bullets in 338 and 50 oeschampion Reloading Equipment and Components 0 08-03-2011 10:01 PM
Rocky Mountain High TacOps Nature Photography 9 02-27-2011 06:13 PM
Rocky Mountain Sunset - Bend In The River Len Backus Len's Nature Photos 11 08-24-2007 09:16 AM


All times are GMT -5. The time now is 02:00 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC