Yep,
My first gun was a 20 gauge single shot.
At the rate Rusty McGee is working on this one, it may be my last one too.
Verney-Carron .615-caliber rifled barrel for 20ga3.5" Ruger Number One, work in progress ...



Above, the thread-protector, below, the cylinder of steel to be turned into a muzzle brake:













Another 20ga3.5":



An easy 20ga3" that will equal a 600 NE:

Rip- very nice! I like it! Who's brass will you use? I'll have to dig out the old 3.5 inch .600 OK brass! Oh my aching shoulder!-Rob

Will a .615"-577 NE aka 24/20 Gauge equal the 600 NE in a #1?
PS. Has anyone made a 600 OK on a Ruger #1?

Thanks for the plug on the books!
Cal

quote:

Originally posted by Robgunbuilder:
Rip- very nice! I like it! Who's brass will you use? I'll have to dig out the old 3.5 inch .600 OK brass! Oh my aching shoulder!-Rob

Rob,
RMC turned brass, 20 gauge 3.5",
and any other standard 20 gauge ball, slug, or sabot in plastic hulls, or brass, from 2.75" to 3.5".

How much work is it to get the 20 gauge rim to fit in the Ruger No 1 action?

The rim diameter of the RMC brass capable of 28,000 psi (or is that 35,000 psi?) is .750".

I reckon Rusty has found out how much work it is. Do-able.

The virtuoso post of Buckstix proves it can be done with the 600 JDJ in a Ruger No.1, same rim diameter:

http://forums.accuratereloadin...341088891#1341088891



PT&G/Dave Kiff reamer that will handle RMC 3.5" brass and any factory 20 Gauge hull known to man or Professional Small Boy:

Nice work, Ron

Thanks Jeffe, it has been a long time coming.

It will have a Bell & Carlson synthetic stock,
and the forearm might require some radical re-shaping to fit a fat barrel.
Might end up Kifaru-esque, will see what Rusty can do ...

Now I am wondering if I can use a 24-gauge wad full of 7-1/2 shot and hunt quail and dove with it.
Boomstick might know.
Could be good for anything from elephant to squirrel.

It would not be all that hard to make a rifled barrel insert for the 12ga encore barrel. Just turn down a rifled 20Ga blank, chamber, cut extractor and maybe make a new extractor.-Rob

Or monoblock our 585 barrels into the 12ga stub monoblock

and make a 3" brass cased 24ga FH. 24ga same diameter as 585.

Cases plentiful and strong drawn cases for about $3.50 ea,

Just use 577NE cases with rim reduced to 24ga size,, shoot 585 Minie

bullets or 585 jacketed, CEBs. etc. Ed

Would it be fair to describe the recoil in the No. 1 as "Brisk"?

quote:

Originally posted by Rusty:
Would it be fair to describe the recoil in the No. 1 as "Brisk"?

Rusty,
Yes, that would be fair to say.
Also fair to say some lead/mercury and muzzle brake will be considered.

Just another one of those plinkers with about 201.2 ft.lbs of recoil energy and 36.0 fps recoil velocity if:

Rifle weight 10 pounds
Bullet weight 900 grains
Powder weight 147 grains (RL-17, 80% load with filler)
MV 2030 fps
ME 8231 ft.lbs
Chamber pressure 33,471 psi

Much more civilized would be same 900-grain bullet at 1900 fps, at 28,000 psi chamber pressure, using 142 grains of powder in a 12-pound rifle:
Lead, mercury, muzzle brake, scope, ammo-carrier full of ammo on the buttstock, etc.

Recoil energy = 149.4 ft.lbs
Recoil velocity = 28.3 fps

With muzzle brake, less recoil than that.

It must be a true 20 gauge, nothing else has the "Professional Small Boy" appeal of the 20 gauge "From Hell."

Added at www.ammoguide.com ...
Waiting for it to show up there ...

I have a 20 gauge project sitting and waiting to find someone to make a "paradox" barrel.

Mike there are two things, first one thing can this be done to a double barrel?And the next thing
is there a bright young gunsmith in Texas who can do your Paradox project give him a call.Also i hope he will answer to this post.Oh his name is Aaron Little like mention contact him.

Finally listed:

http://ammoguide.com/?catid=936




The 14th Edition of COTW of 2014 copyright has a big glossy article about this cartridge, by Bill Loeb.
Title: "A Shotgun Wildcat"

An early one was a $25,000 Martin Hagn falling block rifle for professional small boys L. P. "Loyal" Brezny, and Bob Rott, president of Hastings.
Developments started around 1999-2000.

Hastings actually started rechambering the H&R Super Slug Deluxe 20-gauge for a while, and sold it and plastic-hulled ammo with 410-grain slugs at 2000 fps.

The article claims the financial crisis of 2008 killed the Hastings 20-gauge-3.5-inch project.

Rusty's homemade 20 gauge brake is starting to shape up:



Holes in the side of it are .375" diameter.

Hole on the muzzle exit of the brake will be what diameter for a .615-caliber slug? Plus 20-thou? So .635" minimum diameter?

An interesting tweak would be to taper the side holes so that they are up to 1/2" diameter on the outside of the brake and .375" on the inside.

The gas flow rate is increased in proportion to the exit/external hole cross sectional area, even if the entrance/internal hole is smaller.
That's fluid dynamics that even the Romans knew about.

Hogged out feed ramp of the Ruger No. 1: Thanks Rusty McGee.

I'm sorry, I know you're excited, but that just don't look like any fun to me......

I have a 20 bore shot and ball rifle that I absolutely love...

It a round the world system in terms of carrying one gun for everything...

Question...
What is the largest diameter you can go without hogging out the Ruger #1?

Largest I found without metal removal is rim/belt size
on my 585HE, and that is .654".

That is why quite a few have been built and
being built on Ruger #1s.Nice thing about #1s
is with spring loaded extractor, they work great
with rimless cases.

The rim on 20ga is .760", 24ga .720"

577NE .750", 600NE .810"...Ed

That might be Rip's last rifle all right. Might not want to shoot anymore after touching off that thing. His smith might be slow rolling it for fear of lawsuits and losing a customer.

I have a 20 gauge Savage bolt action shotgun could that be converted ?

Once Rip get's done with his "medium bore", maybe he can convert one of these zabala SxS 10 gauges into a double rifle

Just wondering why don't someone to make a double using this bore size.Thing is they alway used a 10ga. Frame and why?Why not used
A 12 frame.

Idle curiosity behooves me to ask:

Since when have they opened season on Blue Whales?

quote:

Just wondering why don't someone to make a double using this bore size.Thing is they alway used a 10ga. Frame and why?Why not used
A 12 frame.

"They" normally use a 20 gauge.