Canadian Airgun Forum

The #1 Community for Airguns in Canada!
It is currently Tue Dec 10, 2019 7:19 pm

All times are UTC - 5 hours


The Canadian Airgun Forums are a place for people to discuss and learn about airguns and the airgunning sport in Canada. There are lots of discussions about airguns, airgun accessories, reviews, modification and repair information, airgun events, field target and free classifieds!

 

You need to register before you can post: click the register link to proceed. Before you register, please read the forum rules. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own pictures, and access many other special features. Registration is fast, simple, and absolutely free! To start viewing messages, select the forum that you want to visit from the selection below.








Post new topic Reply to topic  [ 10 posts ] 
Author Message
PostPosted: Wed Oct 07, 2015 4:20 pm 
Offline
User avatar

Joined: Sat Nov 03, 2007 4:19 pm
Posts: 8989
Location: Coalmont BC
For those of you that haven't already heard.... the 200 gr. Bob's Boattail "Whiteout" bullet I designed for the Extreme Benchrest Contest, which took place in Arizona last weekend, placed 1st and 2nd in the 200 yard Pro Division.... The gun is a .308 Extreme by Brent Hoag, running on Helium, shooting 970 fps (420 FPE)....

Image

The bullet was designed to have the minimum possible drag to minimize wind drift.... The mold was made by Veral Smith of LBT.... The concept of the gun was to duplicate the ballistics of the .300 AAC Blackout (.300 Whisper) PB round, and during testing they pushed the big 200 gr. to 1080 fps, IIRC....

Image

The gun was very late being assembled and tested, they only had 3 months for the whole project from concept to the event.... It regularly prints 5 shot groups with all the holes touching at 100 yards, but the consistency at 200 yards isn't yet where we want it, although it did manage to print the group below at 200 yards, showing what it is capable of....

Image

The shooters were able to hold on target at 200 yards, even though the wind was gusting 12-20 mph during the event.... Chris Alls shot 169-3X and Mike Pangle shot 168-1X out of 200 in horrible conditions.... Examination of the targets showed that some of the flyers were showing a bit of yaw, so the bullet is a bit long for the 8" twist, something we will correct by pushing the Meplat back slightly.... Doug Noble, who placed 3rd with a 165, shot too many bullets at one target and lost out on the win, so the guys from Virginia didn't have it all their way.... Doug was shooting a .308 cal highly modded Condor.... Next year, Helium will not be allowed in this category, although AoA say that their may be an Unlimited Division to include it....

Bob

_________________
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


Top
 Profile  
 
PostPosted: Wed Oct 07, 2015 5:21 pm 
Offline

Joined: Tue Jan 29, 2013 6:54 pm
Posts: 2415
Location: Northeastern Ontario
Congratulations, Bob. You have achieved something significant.


Top
 Profile  
 
PostPosted: Wed Oct 07, 2015 5:38 pm 
Offline
User avatar

Joined: Sun Feb 10, 2013 1:16 pm
Posts: 1787
Indeed - congratulations!

What pressure was the helium used at?


Top
 Profile  
 
PostPosted: Wed Oct 07, 2015 6:11 pm 
Offline
User avatar

Joined: Sat Nov 03, 2007 4:19 pm
Posts: 8989
Location: Coalmont BC
Between 3900-4500, I'm not sure of the exact level, if they topped off every shot or every 3 shots.... you could not shoot tethered....

Bob

_________________
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


Top
 Profile  
 
PostPosted: Thu Oct 08, 2015 2:03 pm 
Offline
Supporting Member 2013

Joined: Wed Sep 14, 2005 8:47 pm
Posts: 1689
Location: 123 gun street Nova Scotia
HOLY , that's some nice work and shooting . great job


Top
 Profile  
 
PostPosted: Thu Oct 08, 2015 4:32 pm 
Offline

Joined: Thu Nov 02, 2006 4:57 pm
Posts: 1754
Location: mb
Quote:
. . . Bob's Boattail . . . placed 1st and 2nd in the 200 yard Pro Division. . . .

Wow!


Just; Wow!


Impressive; on so many fronts!

_________________
Don't Be Sexist - Broads Hate That.


Top
 Profile  
 
PostPosted: Sat Oct 10, 2015 4:25 am 
Offline

Joined: Sun Jan 29, 2012 7:31 pm
Posts: 696
Location: Halifax, NS
Sweet gun but ... Helium is what is not being made any more.

_________________
...but, could Harry Potter's stick part the sea ?


Top
 Profile  
 
PostPosted: Sat Oct 10, 2015 1:15 pm 
Offline
User avatar

Joined: Sat Nov 03, 2007 4:19 pm
Posts: 8989
Location: Coalmont BC
Very true, it escapes from our atmosphere at the rate of ~4 tons per day.... but which would you sooner see it used for, advancing airgunning or filling party balloons?....

Bob

_________________
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


Top
 Profile  
 
PostPosted: Sat Oct 10, 2015 1:42 pm 
Offline

Joined: Wed Jan 05, 2011 12:35 pm
Posts: 6082
Location: P.G. B.C.
Amazingly good shooting! Well done, Bob.

_________________
Best Wishes
Daryl


Top
 Profile  
 
PostPosted: Sat Oct 10, 2015 5:27 pm 
Offline

Joined: Sat Apr 23, 2011 10:13 pm
Posts: 201
rsterne wrote:
Very true, it escapes from our atmosphere at the rate of ~4 tons per day.... but which would you sooner see it used for, advancing airgunning or filling party balloons?....

Bob



Infused in beer would be my choice...

https://www.youtube.com/watch?v=Vwo1J3QKrC8

_________________
Don't take life too serious... It's not like you're gonna make it out alive.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
News News Site map Site map SitemapIndex SitemapIndex RSS Feed RSS Feed Channel list Channel list

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

phpBB SEO