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


BC 's effect on POI

LinkBack Thread Tools Display Modes
Unread 01-31-2004, 01:06 AM
Platinum Member
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: BC \'s effect on POI

If that Barnes BC isn't inflated like most all of theirs are, by a long ways, (you are being forewarned here [img]images/icons/wink.gif[/img]) accuracy will still probably be a problem with their BT bullets. The FB bullets seem to do OK, but getting the boattails to shoot can very often be a real B&^ch!!

I would guess the XBT 140 to have a BC of about .450 if you're lucky! [img]images/icons/wink.gif[/img] The A-Max, SMK and Lapua seem to be real close, sometimes a bit higher in the real world too... Barnes is not that way.
Brent Moffitt
Reply With Quote

Unread 01-31-2004, 06:39 AM
Platinum Member
Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,310
Re: BC \'s effect on POI

It may be me but I have also found that Barnes is a little optimistic about the velocities that are published in their manual.
Inflated B/C's
Inflated velocity
Inflated ego [img]images/icons/rolleyes.gif[/img]

They do, however, penetrate like crazy. I have never recoverd a single X bullet from a whitetail. Probably should stop shooting those little critters with my 7STW and those big copper bullets. [img]images/icons/grin.gif[/img]


[ 01-31-2004: Message edited by: Varmint Hunter ]
Reply With Quote
Unread 01-31-2004, 01:31 PM
Platinum Member
Join Date: Mar 2003
Location: Southern Wisconsin
Posts: 1,378
Re: BC \'s effect on POI

Thanks for all the great input. I think I'll still try a box of them, I just won't get my hopes up.
Ignorance can be treated with education, sadly there is no cure for stupidity.
Reply With Quote
Unread 01-31-2004, 02:22 PM
Platinum Member
Join Date: Jan 2003
Location: The rifle range, or archery range or behind the computer in Alaska
Posts: 3,608
Re: BC \'s effect on POI

Part of the reason the BC is inflated is that they are solid copper. They have a much differant specific gravity factor. It also takes a tighter than normal twist to get good stabilty out of em too becasue of this. If they were the length they are and jacketed lead, they would be the advertised BC and they would use a twist formula most of us use.

They do smoke coming out of the barrel though. Have had 2900 FPS out of a 26" 12 twist 308.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: BC 's effect on POI
Thread Thread Starter Forum Replies Last Post
damaged tip effect accuracy? dmproske Reloading 5 11-20-2008 03:32 PM
do primers effect accuracy? diderr Reloading 9 02-02-2008 10:49 AM
SMK effect on shorter ranges? Diezel Rifles, Bullets, Barrels & Ballistics 3 12-08-2007 02:32 PM
Coriolis effect Blaine Fields Rifles, Bullets, Barrels & Ballistics 46 03-17-2007 01:22 AM
Magnus Effect vs. Spin Effect Brent Rifles, Bullets, Barrels & Ballistics 2 12-26-2002 05:27 PM

All times are GMT -5. The time now is 08:18 AM.

Powered by vBulletin ©2000 - 2015, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2015 Long Range Hunting, LLC