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BC 's effect on POI

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Unread 01-31-2004, 01:06 AM
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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
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Unread 01-31-2004, 06:39 AM
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Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,516
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 ]
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Unread 01-31-2004, 01:31 PM
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Join Date: Mar 2003
Location: Southern Wisconsin
Posts: 1,381
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.
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Unread 01-31-2004, 02:22 PM
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Join Date: Jan 2003
Location: The rifle range, or archery range or behind the computer in Alaska
Posts: 3,830
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.
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