Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: Feeding a Colindian

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies

*** Enjoy NitroExpress.com? Participate and join in. ***

You are not logged in. [Login]

Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Double Rifles, Single Shots & Combinations >> Paradox and Bore Guns

Grenadier
.375 member

Reged: 20/02/08
Posts: 570
Loc: North of the Columbia, USA

Re: Feeding a Colindian
22/11/17 01:52 PM

The Fosbery bullets are best launched at just under the speed of sound. Otherwise, the bullets will go trans-sonic in flight and become erratic. At subsonic speeds the Fosbery bullet acts very much the same as a pistol bullet. I once worked up the ballistic coefficient by chronographing them at the muzzle and then again down range and I was quite surprised. The BC was much higher than I expected. But once I compared it to BCs of other big cast bullets at the same velocity I realized it was right in there with them.

The original alloy was 15:1 lead to tin. Later, Kynoch at least was making them with lead and 2% antimony. You can look up the hardness of that mix but suffice to say it is still pretty soft. For the short time I was casting them and making my own ammunition I used the readily available 16:1 mix and it worked just fine. The current factory ammunition is loaded with a lead-antimony bullet. I bet they are following the old 2% formula Kynoch used but I cannot confirm that.

--------------------
~

Post Extras

Print Post

Remind Me!

Notify Moderator

Entire topic
Subject	Posted by	Posted on
Feeding a Colindian	Dutch44	21/11/17 12:23 PM
Re: Feeding a Colindian	Grenadier	22/11/17 12:24 AM
Re: Feeding a Colindian	DarylS	22/11/17 05:53 AM
Re: Feeding a Colindian	HistoricBore	22/11/17 06:04 AM
Re: Feeding a Colindian	Grenadier	22/11/17 06:20 AM
Re: Feeding a Colindian	rigbymauser	22/11/17 08:44 AM
Re: Feeding a Colindian	CommandCar	22/11/17 10:23 AM
Re: Feeding a Colindian	rglenz	22/11/17 11:37 AM
Re: Feeding a Colindian	CommandCar	22/11/17 11:47 AM
Re: Feeding a Colindian	Grenadier	22/11/17 01:52 PM
Re: Feeding a Colindian	CommandCar	22/11/17 03:26 PM
Re: Feeding a Colindian	CommandCar	23/11/17 01:28 PM
Re: Feeding a Colindian	470evans	24/11/17 04:05 AM
Re: Feeding a Colindian	Dutch44	24/11/17 12:48 PM
Re: Feeding a Colindian	Dutch44	07/12/17 02:19 PM
Re: Feeding a Colindian	CommandCar	07/12/17 03:32 PM
Re: Feeding a Colindian	Dutch44	08/12/17 12:02 PM
Re: Feeding a Colindian	tinker	07/12/17 02:56 PM
Re: Feeding a Colindian	Grenadier	22/11/17 09:47 AM
Re: Feeding a Colindian	DarylS	22/11/17 10:09 AM
Re: Feeding a Colindian	lancaster	21/11/17 03:41 PM

Extra information

0 registered and 15 anonymous users are browsing this forum.

Moderator: tinker

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 10064

Jump to

NitroExpress.com

Powered by UBB.threads™ 6.5.5

Home | Ezine | Forums | Links | Contact

Copyright 2003 to 2011 - all rights reserved