Long Range Hunting Online Magazine


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


Reply

Sierra MK's Ballistic Coeffecient: The Truth Wanted

 
LinkBack Thread Tools Display Modes
  #1  
Old 02-23-2002, 04:24 PM
Silver Member
 
Join Date: Jun 2001
Location: N. Dakota
Posts: 181
Sierra MK\'s Ballistic Coeffecient: The Truth Wanted

Gentlemen;

Experiencing confusion! Gonna build a LR critter getter using high BC bullets. I want to use Sierra MK's in either 6.5 or 7mm. Now I have read several diferent documents that post the 7mm 168gr MK's BC @ .633 & .627 and I believe my Oehler Ballistic x-plorer gives a .633, yet at the Sierra website they give only .488 for that bullet. Is that a misprint? Anyone got the true answer to that? (I intend on calling the Sierra tech line on Monday, but can't wait)

Gonna build either 6.5-06 Imp or a .280 Imp based on the higher BC. I am determined to use MK's as Primary bullet due to reputation, $$$ & availbility. I am aware of very high BC VLD's, but don't want to go there.

Any help?

Nodak7mm [img]images/icons/confused.gif[/img] [img]images/icons/confused.gif[/img] [img]images/icons/confused.gif[/img]
__________________
Nodak7mm

Member #92
Reply With Quote
  #2  
Old 02-23-2002, 04:37 PM
Silver Member
 
Join Date: Dec 2001
Location: Nanty-Glo, Pennsylvania
Posts: 127
Re: Sierra MK\'s Ballistic Coeffecient: The Truth Wanted

Sierra had bad equipment when they first came out with the 7mm 168 MK and made an error in the B.C. They corrected it later on to .488. But the 168 MK does a great job at 1000 yds benchrest or deer. A overlooked bullet in 7mm is the 175 Sierra B.T. Spitzer, it has a B.C. of over .530 and is almost as accurate and kills good too, especially if you get it going about 3100 fps.
Reply With Quote
  #3  
Old 02-23-2002, 08:18 PM
PUBLISHER
 
Join Date: May 2001
Posts: 5,834
Re: Sierra MK\'s Ballistic Coeffecient: The Truth Wanted

I did some limited tests just before my Mexico Coues deer hunt last month with the 7mm, 168 grain MK. I think the .488 BC is about right.
__________________


Long Range Hunting Rifles

Long Range Rifles, LLC - Ready To Ship

Components and assembly by LRH Sponsors
Reply With Quote
  #4  
Old 02-23-2002, 11:21 PM
Junior Member
 
Join Date: Feb 2002
Location: Minnesota
Posts: 18
Re: Sierra MK\'s Ballistic Coeffecient: The Truth Wanted

Is there any experience with the 150grain, 7mm Swift Scirocco yet, with an advertised BC of .53? Based on balistics tables, this BC combined with the increased muzzle velocity of the lighter bullet make it look very competitive with other heavier 7mm out to a 1000 yards and further. Is it accurate? or another X bullet?
Reply With Quote
  #5  
Old 02-27-2002, 06:17 PM
Platinum Member
 
Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,124
Re: Sierra MK\'s Ballistic Coeffecient: The Truth Wanted

I have experimented a bit with the 150 Scirrocco in an accurized 7STW. Although it does shoot well for a "premium" hunting bullet, it was regularely outshot by Nosler B-Tips and Hornady SST's. One could naturally assume that a quality "match" bullet would shoot better yet.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Sierra MK's Ballistic Coeffecient: The Truth Wanted
Thread Thread Starter Forum Replies Last Post
FS Sierra 30 cal 190 MK's alf Reloading Equipment and Components 0 04-02-2009 10:07 AM
WTT Sierra 168 MK's ronsroom1 Reloading Equipment and Components 0 04-07-2008 11:26 PM
Help me understand Ballistic Coeffecient? TrpD345 The Basics, Starting Out 1 09-09-2005 03:50 PM
? on sierra MK's... Rifles, Bullets, Barrels and Ballistics 6 02-10-2003 06:34 PM
Sierra MK's jhendri2 Rifles, Bullets, Barrels and Ballistics 4 01-30-2002 09:00 PM

Current Poll
Do You Think Slingshots Should Be Legalized For Hunting Brown Bear?
Yes - 47.14%
907 Votes
No - 52.86%
1,017 Vote
Total Votes: 1,924
You may not vote on this poll.

All times are GMT -5. The time now is 02:16 PM.


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