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Double Rifles, Single Shots & Combinations >> Double Rifles

NitroX
.700 member

Reged: 25/12/02
Posts: 40552
Loc: Barossa Valley, South Australi...

The 75 % Rule
05/03/25 12:18 AM

The 75% Rule, is the alleged regulation result that if you have a regulating bullet load, if you reduce the bullet weight tom75%, using the same powder charge, the lighter bullet will still regulate.

So:
.375 300 gr and 235 gr;
.400 .416, .423 etc, 400 gr and 300 gr;
.450 480 gr and 350 gr;
.470 500 gr and 350 gr.
etc.

I've never tried it.

Have you tried the 75% rule? Please report your results?

--------------------
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"

Post Extras

Entire topic
Subject	Posted by	Posted on
The 75 % Rule	NitroX	05/03/25 12:18 AM
Re: The 75 % Rule	DarylS	05/03/25 04:53 AM
Re: The 75 % Rule	93x64mm	05/03/25 06:54 AM
Re: The 75 % Rule	Rule303	05/03/25 10:26 AM
Re: The 75 % Rule	jvw	05/03/25 11:27 AM
Re: The 75 % Rule	Huvius	06/03/25 06:41 AM
Re: The 75 % Rule	93x64mm	06/03/25 07:08 AM
Re: The 75 % Rule	mauserand9mm	06/03/25 12:42 PM
Re: The 75 % Rule	buckstix	11/04/25 11:46 PM

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