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New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Sat Dec 15, 2012 12:46 pm   Subject: New Project Rifle
gicos
 
Replies: 27
Views: 19891
OK, here is the grand plan of attack. I've gleaned enough information to start laying out the money and time in testing. These are design goals, and they are lofty, so reality may not bear these thing ...
 
New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Sat Dec 15, 2012 10:28 am   Subject: New Project Rifle
gicos
 
Replies: 27
Views: 19891
Thanks so much again, Bob. I won't pester you any more for graphing. That told me an awful lot. Not quite as rosy a picture as I'd hoped for, but such is engineering. The reason I was curious as to us ...
 
Rifling Twist 
PostForum: Pellets/Ammo   Posted: Fri Dec 14, 2012 7:48 pm   Subject: Rifling Twist
gicos
 
Replies: 14
Views: 15487
HPs won't alter the twist needed. If you look at high speed photos of a bullet in flight, the air isn't actually in contact with the nose. The turbulence across the ogive creates an air pocket that di ...
 
New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Fri Dec 14, 2012 5:32 pm   Subject: New Project Rifle
gicos
 
Replies: 27
Views: 19891
Bob,

That is just flippin' awesome! It's the coolest thing since sliced bread. Thank you so much. This will come in very useful and I won't forget you for it.

I wonder if I could impose upon yo ...
 
New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Thu Dec 13, 2012 12:22 pm   Subject: New Project Rifle
gicos
 
Replies: 27
Views: 19891
While on the subject of theory, I thought I'd post the thought process leading to the idea that I could pull this project off, in the hopes that it may help someone. Sorry for the long post, but theor ...
 
New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Thu Dec 13, 2012 9:18 am   Subject: New Project Rifle
gicos
 
Replies: 27
Views: 19891
I could use some critiquing on my math here. Before I start testing, I need to make sure I've got my head completely wrapped around the numbers for multi stage pumps. I realize the scenerio below may ...
 
My Version of the Millenium Pumper 
PostForum: Rifles   Posted: Wed Dec 12, 2012 8:42 pm   Subject: My Version of the Millenium Pumper
gicos
 
Replies: 19
Views: 26075
The knowledge you continue to put up here is so very much appreciated, Bob.
 
My Version of the Millenium Pumper 
PostForum: Rifles   Posted: Mon Dec 10, 2012 6:35 pm   Subject: My Version of the Millenium Pumper
gicos
 
Replies: 19
Views: 26075
Holy sweet Jesus, Bob!! Over 1000 FPS with a 25 grainer? Your way deep into high performance territory, almost achieving what I'm after in my pump-n-dump with your multi shot setup. Most impressive. I ...
 
New Pellets in Holland 
PostForum: Pellets/Ammo   Posted: Sun Dec 09, 2012 6:20 pm   Subject: New Pellets in Holland
gicos
 
Replies: 4
Views: 10034
Any more testing on this one? Right down my alley.
 
Rifling Twist 
PostForum: Pellets/Ammo   Posted: Sun Dec 09, 2012 5:28 pm   Subject: Rifling Twist
gicos
 
Replies: 14
Views: 15487
The bearing surface has the largest impact on required twist. That's why the Border Barrels calculator has nose length as an input--so it knows how long the at caliber portion of the bullet is. Very i ...
 
My Version of the Millenium Pumper 
PostForum: Rifles   Posted: Sun Dec 09, 2012 4:56 pm   Subject: My Version of the Millenium Pumper
gicos
 
Replies: 19
Views: 26075
You truly are an inspiration, Bob.
 
New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Mon Dec 03, 2012 3:04 pm   Subject: New Project Rifle
gicos
 
Replies: 27
Views: 19891
Much thanks again, Bob. You answered a number of questions without me having to ask. You truly are a gold mine.

The reason I'm not interested in the Condor and a pump is weight and bulk. If this w ...
 
New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Mon Dec 03, 2012 1:15 am   Subject: Thanks Bob
gicos
 
Replies: 27
Views: 19891
It's good advise, Bob, and much appreciated. I knew from the start this wasn't going to be a very practical or enjoyable piece of equipment, though. It's better than sticks or rocks, so practical enou ...
 
New Project Rifle 
PostForum: General Air Gun Questions and Topics   Posted: Sun Dec 02, 2012 9:07 pm   Subject: New Project Rifle
gicos
 
Replies: 27
Views: 19891
Hello all! First post here. What a treasure trove of information in this forum. You all are truly the cream of the crop and represent what all of humanity should be doing.

I found the forum by res ...
 
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