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lancaster
.470 member

Reged: 06/05/08
Posts: 9062
Loc: There's a lighthouse in the mi...

which 577 cartridge in this cape gun?
#377015 - 28/05/23 02:47 PM

this cape gun is proofed for 90 grains cordite, 750 grains bullet
James & Reynolds, other barrel 12 ga

https://auctionet.com/de/2731835-kombi-james-reynolds-33391-se0327902/images#image_1

must be a 577 express but which would it be?

--------------------
Norwegian hunter misses moose, shoots man on toilet
.
bringing civilisation to the barbarians

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kuduae
.400 member

Reged: 13/01/10
Posts: 1792
Loc: middle of Germany

Re: which 577 cartridge in this cape gun? [Re: lancaster]
#377019 - 28/05/23 07:29 PM

.577 Nitro-Express 2 ¾“, see the 1925 Kynoch catalog:

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lancaster
.470 member

Reged: 06/05/08
Posts: 9062
Loc: There's a lighthouse in the mi...

Re: which 577 cartridge in this cape gun? [Re: kuduae]
#377020 - 28/05/23 09:21 PM

indeed

an interesting combination gun, think the 3" is the common version but it would be a handloading gun anyway

--------------------
Norwegian hunter misses moose, shoots man on toilet
.
bringing civilisation to the barbarians

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NitroX
.700 member

Reged: 25/12/02
Posts: 39904
Loc: Barossa Valley, South Australi...

Re: which 577 cartridge in this cape gun? [Re: kuduae]
#377030 - 29/05/23 01:26 PM

Quote:

.577 Nitro-Express 2 ¾“, see the 1925 Kynoch catalog:

And I was going to say normally the 3" uses a 750 gr and the 2 3/4" a 650 gr and am instantly proven wrong.

Nice old hammer cape gun.

So Rolf Babnicks modern Greener Empire Cape gun conversion in 12-bore and .577 2 3/4" has some historical precedent. I always thought a 12b and the hefty .577 unlikely, unless one was pot shooting pheasant and wild cock in an Indian jungle where a tiger, gaur or rogue elephant might be stumbled onto. If ones gun bearer fled!

http://forums.nitroexpress.com/showflat.php?Cat=0&Number=6793&an=&page=1&vc=1

The choice of the .577 however was to fit better the large action of the 12-bore.

Back in 2004 I thought the price was high ... Now I wish ... Though it is just a cape gun.

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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kuduae
.400 member

Reged: 13/01/10
Posts: 1792
Loc: middle of Germany

Re: which 577 cartridge in this cape gun? [Re: NitroX]
#377040 - 29/05/23 09:19 PM

Quote:

And I was going to say normally the 3" uses a 750 gr and the 2 3/4" a 650 gr and am instantly proven wrong.

The 1925 Kynoch loads for the two .577 Express case lengths:
2 ¾”:
Nitro Express load: 90 gr smokeless, 750 gr jacketed bullet for 1795 fps ( 28” barrel)
Nitro for Black load: 75 gr smokeless, 570 gr metal based lead bullet for 1650 fps
Black P loads: 160 gr BP, 520 copper tubed or 560 gr solid lead bullet for 1725 / 1650 fps
3”:
Nitro Express load: 100 gr smokeless, 750 gr jacketed for 2050 fps
Nitro for Black loads: 75 gr smokeless, 570 gr or 650 gr solid or copper tubed metal based lead bullet for 1900 / 1850 fps
Black P loads: 167 gr black, 570 or 610 gr lead bullets for 1725 / 1650 fps

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85lc
.400 member

Reged: 19/01/18
Posts: 1031
Loc: Georgia, USA

Re: which 577 cartridge in this cape gun? [Re: kuduae]
#377044 - 30/05/23 12:44 AM

Interesting that the resulting velocity of the two cartridges is so different.

NfB Each with 570 gr bullet and 75 gr smokeless:
2.75 = 1650 fps
3.00 = 1900 fps

Am I reading this wrong?

--------------------
RB

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lancaster
.470 member

Reged: 06/05/08
Posts: 9062
Loc: There's a lighthouse in the mi...

Re: which 577 cartridge in this cape gun? [Re: 85lc]
#377045 - 30/05/23 03:13 AM

no, you read right

--------------------
Norwegian hunter misses moose, shoots man on toilet
.
bringing civilisation to the barbarians

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kuduae
.400 member

Reged: 13/01/10
Posts: 1792
Loc: middle of Germany

Re: which 577 cartridge in this cape gun? [Re: 85lc]
#377047 - 30/05/23 05:05 AM

Quote:

Interesting that the resulting velocity of the two cartridges is so different.

NfB Each with 570 gr bullet and 75 gr smokeless:
2.75 = 1650 fps
3.00 = 1900 fps

Am I reading this wrong?

That's what the ballistic tables on pages 93 - 94 of the 1925 Kynoch catalog listed.

The ballistics given in a post1923 ICI / Kynoch catalog just add to the confusion:

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NitroX
.700 member

Reged: 25/12/02
Posts: 39904
Loc: Barossa Valley, South Australi...

Re: which 577 cartridge in this cape gun? [Re: kuduae]
#377064 - 30/05/23 03:32 PM

I believe Marrakai and Mickmuded a 650 gr in their .577 2 3/4" NfB Fatboy. I'm thinking the velocity was about 1800 fps in handloads? It will be on these forums somewhere.m

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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