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

bullet weights.

 
LinkBack Thread Tools Display Modes
  #1  
Old 08-06-2009, 01:29 PM
Bronze Member
 
Join Date: Jun 2009
Location: NW Indiana
Posts: 56
bullet weights.

Me and my friend are getting into the long range game and we are in the process of getting loads worked up for our weapons. My friend is using Hornady 7mm 139gr SSTs in his 7mag and they are shooting pretty good at 100yds. one thing we have noticed though is that when we weighed the bullets out of curiousity, we discovered that they are all not exactly 139gr. they vary from 138.9gr to 139.7gr. We did the same thing to a box of Sierra 7mm 150gr MKs and discovered that they ranged in weights from 149.9gr to 150.1gr. Much more close than the Hornadys.

I understand that at a couple of hundered yards, the various bullet weights in the SSTs propbably are not going to make make a difference. But what will happen at several hundered yards with the SSTs? Will these different weights make a difference in POI?
__________________
It's better to be hated for who you are than loved for who you are not......
Reply With Quote
  #2  
Old 08-06-2009, 02:42 PM
Gold Member
 
Join Date: Aug 2007
Location: Canterbury, New Zealand
Posts: 675
Re: bullet weights.

There will usually be a bit of variation in bullet weight, it will make a bit of a difference, but probably not as much as other things,ie neck tension and velocity difference between shots.
The 7mm mag is a great long range rifle, but to get the most from it you might like to try the higher BC bullets, like the 162 a-max and the 168 berger VLD both have a G1 BC greater then 0.6.
You won't shoot these as fast and you might get more drop (but that is easy to calculate and allow for) but you WILL get less drift, and that can be hard to judge at times.
For example at 600 yds with a 10mph crosswind my friends 7mm mag with 150 Sierra gamekings drifts 3.7 MOA, my 7 mm mag with 168 bergers drifts 2.7 MOA, that is 1 MOA or 6 inches difference, thats enough to blow you off the shoulder into the guts if your estimation of the wind is wrong.

Stu.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: bullet weights.
Thread Thread Starter Forum Replies Last Post
7mm rem mag and 300. winchester short mag- bullet weights matt_3479 Reloading Equipment and Components 3 03-01-2010 05:59 AM
bullet weights chucksniper Reloading 0 08-16-2009 07:07 AM
>308 and .270 Win Bullet weights ash1055 Rifles, Bullets, Barrels & Ballistics 6 05-13-2009 06:10 PM
1000+ yd. 30 Cal. bullet weights mfc1245 Rifles, Bullets, Barrels & Ballistics 12 07-20-2004 12:36 PM
1 in 12 twist 6.5 bullet weights rickt300 Rifles, Bullets, Barrels & Ballistics 2 05-17-2003 07:42 PM


All times are GMT -5. The time now is 02:57 PM.


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