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Double Rifles, Single Shots & Combinations >> Double Rifles

3DogMike
.400 member

Reged: 29/01/15
Posts: 1455
Loc: Western Slope, Colorado USA

Re: .577 BPE needs the 640 grain
19/05/24 12:12 AM

Thought I’d chime in.
The 1-96 twist seems awfully slow for a ~640 grain bullet. But hey, if they stabilize then it’s OK.
I have several double rifle .577 BP Express’ of various vintages , late 1860’s to late 1890’s. The ones that are known to have been intended for the heavy 650 grain bullet (1890’s) are in the vicinity of 1-32 to 1-36 or so twist, dependent on maker.
Those known to have been intended for 520 -560 grain bullets are about 1-52 to 1-56 twist
My one from ~1870 does have a 1-96 twist and it works best with a very “stubby” 450-480grain bullet.

Truly, one never knows until test firing. As well, it may make a difference whether the loads are black powder or modern Nitro for Black.

- Mike

--------------------
"Will Rogers never met a fighter pilot"
- Anon

“Always carry a flask of whiskey in case of snakebite, and furthermore always carry a small snake."
-- W. C. Fields

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Subject	Posted by	Posted on
.577 BPE needs the 640 grain	casper50	17/05/24 07:26 PM
Re: .577 BPE needs the 640 grain	LTK	17/05/24 11:29 PM
Re: .577 BPE needs the 640 grain	casper50	18/05/24 12:37 AM
Re: .577 BPE needs the 640 grain	LTK	18/05/24 04:44 AM
Re: .577 BPE needs the 640 grain	3DogMike	19/05/24 12:12 AM
Re: .577 BPE needs the 640 grain	DarylS	19/05/24 05:14 AM
Re: .577 BPE needs the 640 grain	pondoro62	19/05/24 07:02 AM
Re: .577 BPE needs the 640 grain	DarylS	19/05/24 12:08 AM
Re: .577 BPE needs the 640 grain	85lc	18/05/24 03:06 AM
Re: .577 BPE needs the 640 grain	casper50	18/05/24 03:52 AM

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