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NitroX
.700 member

Reged: 25/12/02
Posts: 39885
Loc: Barossa Valley, South Australi...

Re: 10,75x63 by Rodda Calcutta
05/07/22 12:36 AM

Sectional density.

Sectional density plus velocity at impact is a key determinant of penetration. Bullet construction as a constant. Calibre size and expansion with penetration is the other determinant of killing effectiveness.

But if one looks at the .577? Penetration is important. Velocity with it increases effectiveness. But being hit with something heavy also just seems to work

https://www.vcalc.com/wiki/MichaelBartmess/Sectional+Density

.423, 347 grs. SD is .277
.423, 400 grs, SD is .319
.423, 450 grs, SD is .359

.375, 270 grs, SD is .274
.375, 300 grs, SD is .305
.375, 350 grs, SD is .356

9.3mm, .366, 287 grs, SD is .306
9.3mm, .366, 320 grs, SD is .341

.318 WR, .330, 250 grs, SD is .328
.338, 250 grs, SD is .313

.411, 400 grs, SD is .338

.416, 400 grs, SD is .330
.416, 450 grs, SD is .371

.458, 480 grs, SD is .327
.458, 500 grs, SD is .341

.577, 650 grs, SD is .279
.577, 750 grs, SD is .322
(.577 corrected)

Not wanting to keep going off topic.

The 10.75x63 or x68,
If loaded to 2150 fps or more, 347 gr bullets of decent construction will out perform the lesser .375 cartridges below the magnum (s)

If loaded with a 400 gr to 2100 fps with modern powders and a .404 well designed bullet can do what the .404 Jeffery did in the first half of last century. Buffalo, elephants, lion, rhino etc.

All from my armchair ...

I'd have no problem using them on water buffalo, scrub bull, as well as pigs and sambar iietc.

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

Edited by NitroX (05/07/22 01:05 AM)

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Subject	Posted by	Posted on
10,75x63 by Rodda Calcutta	lancaster	01/07/22 04:15 PM
Re: 10,75x63 by Rodda Calcutta	m4220	03/07/22 05:22 AM
Re: 10,75x63 by Rodda Calcutta	lancaster	03/07/22 05:50 AM
Re: 10,75x63 by Rodda Calcutta	m4220	03/07/22 06:04 AM
Re: 10,75x63 by Rodda Calcutta	kuduae	03/07/22 07:43 PM
Re: 10,75x63 by Rodda Calcutta	lancaster	03/07/22 07:54 PM
Re: 10,75x63 by Rodda Calcutta	kuduae	04/07/22 06:13 AM
Re: 10,75x63 by Rodda Calcutta	lancaster	04/07/22 07:46 PM
Re: 10,75x63 by Rodda Calcutta	NitroX	04/07/22 10:48 PM
Re: 10,75x63 by Rodda Calcutta	kuduae	10/07/22 08:43 PM
Re: 10,75x63 by Rodda Calcutta	NitroX	11/07/22 01:50 AM
Re: 10,75x63 by Rodda Calcutta	Marrakai	11/07/22 09:18 AM
Re: 10,75x63 by Rodda Calcutta	kuduae	06/07/22 05:14 AM
Re: 10,75x63 by Rodda Calcutta	NitroX	06/07/22 11:11 PM
Re: 10,75x63 by Rodda Calcutta	lancaster	06/07/22 05:33 AM
Re: 10,75x63 by Rodda Calcutta	jgrabow	04/07/22 10:56 PM
Re: 10,75x63 by Rodda Calcutta	NitroX	05/07/22 12:19 AM
Re: 10,75x63 by Rodda Calcutta	NitroX	05/07/22 12:36 AM
Re: 10,75x63 by Rodda Calcutta	lancaster	05/07/22 04:03 AM
Re: 10,75x63 by Rodda Calcutta	DarylS	05/07/22 05:30 AM
Re: 10,75x63 by Rodda Calcutta	jgrabow	04/07/22 10:38 PM
Re: 10,75x63 by Rodda Calcutta	lancaster	03/07/22 07:42 PM
Re: 10,75x63 by Rodda Calcutta	mckinney	02/07/22 01:21 AM
Re: 10,75x63 by Rodda Calcutta	NitroX	02/07/22 02:56 AM
Re: 10,75x63 by Rodda Calcutta	85lc	02/07/22 03:20 AM
Re: 10,75x63 by Rodda Calcutta	kuduae	02/07/22 03:49 AM
Re: 10,75x63 by Rodda Calcutta	lancaster	02/07/22 05:03 AM
Re: 10,75x63 by Rodda Calcutta	kuduae	02/07/22 05:12 AM
Re: 10,75x63 by Rodda Calcutta	NitroX	02/07/22 09:06 PM
Re: 10,75x63 by Rodda Calcutta	lancaster	02/07/22 05:20 AM
Re: 10,75x63 by Rodda Calcutta	NitroX	02/07/22 04:06 AM
Re: 10,75x63 by Rodda Calcutta	grandveneur	02/07/22 07:34 PM
Re: 10,75x63 by Rodda Calcutta	NitroX	02/07/22 09:13 PM
Re: 10,75x63 by Rodda Calcutta	lancaster	02/07/22 09:55 PM
Re: 10,75x63 by Rodda Calcutta	Huvius	03/07/22 01:26 AM
Re: 10,75x63 by Rodda Calcutta	NitroX	03/07/22 01:44 AM
Re: 10,75x63 by Rodda Calcutta	degoins	01/07/22 11:10 PM
Re: 10,75x63 by Rodda Calcutta	JDL	02/07/22 12:23 AM

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