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

DarylS
.700 member

Reged: 10/08/05
Posts: 26511
Loc: Beautiful British Columbia, Ca...

Re: My "New" 20 Gauge Rifle Rolling Block
24/05/17 09:13 AM

Hi- a .645" groove diameter will put it 1/2 way between a 17 and 18 bore. No longer a 20 bore gun.

I suspect a chamber for 20 bore brass might be right, though.

A .645" pure lead ball should weigh around 400gr. even.

17 bore weighs 411.8 and an 18 bore ball runs 388.9gr.

In the 20 bore brass hull - anneal, of course - 2 3/4" or 2 1/2"?

Whatever primer you want, probably brass from Buffalo Arms, probably will use large pistol primers.

2 1/2 to 3 drams of 2F- necessary wads to get the height to the ball and slight crimp- or if tight fit in case, no crimp likely needed. Some of the BP Cowboy action guys seal with water glass & use no crimp on brass. I used a crimp for my ball and patched ball loads, as well as for shot loads in my straight rifled Husqvarna SxS. I made a cone-shaped die for crimping these. These are 16 bore brass and had to be annealed before loading.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

Post Extras

Entire topic
Subject	Posted by	Posted on
My "New" 20 Gauge Rifle Rolling Block	bigskybound	22/05/17 11:29 AM
Re: My "New" 20 Gauge Rifle Rolling Block	Ash	22/05/17 05:41 PM
Re: My "New" 20 Gauge Rifle Rolling Block	bigskybound	23/05/17 03:49 AM
Re: My "New" 20 Gauge Rifle Rolling Block	Ash	27/05/17 10:16 AM
Re: My "New" 20 Gauge Rifle Rolling Block	DarylS	27/05/17 10:49 AM
Re: My "New" 20 Gauge Rifle Rolling Block	CptCurl	28/05/17 05:37 AM
Re: My "New" 20 Gauge Rifle Rolling Block	DarylS	28/05/17 11:50 AM
Re: My "New" 20 Gauge Rifle Rolling Block	bigskybound	06/06/17 12:59 PM
Re: My "New" 20 Gauge Rifle Rolling Block	DarylS	24/05/17 09:13 AM
Re: My "New" 20 Gauge Rifle Rolling Block	bigskybound	24/05/17 11:03 AM
Re: My "New" 20 Gauge Rifle Rolling Block	Longknife	24/05/17 11:44 PM
Re: My "New" 20 Gauge Rifle Rolling Block	DarylS	25/05/17 03:21 AM
Re: My "New" 20 Gauge Rifle Rolling Block	bigskybound	25/05/17 10:11 PM
Re: My "New" 20 Gauge Rifle Rolling Block	93x64mm	22/05/17 07:14 PM

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