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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?
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:

Post Extras

Entire topic
Subject	Posted by	Posted on
which 577 cartridge in this cape gun?	lancaster	28/05/23 02:47 PM
Re: which 577 cartridge in this cape gun?	kuduae	28/05/23 07:29 PM
Re: which 577 cartridge in this cape gun?	NitroX	29/05/23 01:26 PM
Re: which 577 cartridge in this cape gun?	kuduae	29/05/23 09:19 PM
Re: which 577 cartridge in this cape gun?	85lc	30/05/23 12:44 AM
Re: which 577 cartridge in this cape gun?	kuduae	30/05/23 05:05 AM
Re: which 577 cartridge in this cape gun?	NitroX	30/05/23 03:32 PM
Re: which 577 cartridge in this cape gun?	lancaster	30/05/23 03:13 AM
Re: which 577 cartridge in this cape gun?	lancaster	28/05/23 09:21 PM

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