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Shooting & Reloading - Mausers, Big Bores and others >> Rifles

buckstix
.400 member

Reged: 07/11/12
Posts: 1113
Loc: Whitetail Country

Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story
18/12/17 04:27 AM

Hello,

Back from the range today. I'm very happy with the results. Upped the powder charge to 105 grains of IMR 4831 with the same 160g Barnes bullet.

Take a look at the individual readings.

1- 3531 fps
2- 3527 fps
3- 3527 fps
4- 3554 fps
5- 3527 fps

3533 fps ave = 3550 fps corrected to muzzle
11 fps sd

3 of the 5 readings were the same and the standard deviation was 11 fps. Primers were flat but no signs of excessive pressure.

Looks like my prediction of 3700 fps may be attainable.

3-1/2" high at 100 yds = 4-1/2" low at 400 yds
4500 ft/lbs energy at the muzzle with 2050 ft/lbs remaining at 400 yds

I forgot to mention, the muzzle brake on this rifle really works. Recoil is about the same as 308 win.

--------------------
"You never pay too much for something, you only buy it too early."

Post Extras

Entire topic
Subject	Posted by	Posted on
An A-Square - 338 A-Square Mag Cal - An Awesome Story	buckstix	17/12/17 07:47 AM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	93x64mm	17/12/17 08:06 AM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	Rule303	17/12/17 08:40 AM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	buckstix	17/12/17 09:15 AM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	Rule303	17/12/17 02:49 PM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	buckstix	17/12/17 04:20 PM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	buckstix	18/12/17 04:27 AM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	DarylS	18/12/17 11:39 AM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	buckstix	19/12/17 10:41 PM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	DarylS	17/12/17 10:18 AM
Re: An A-Square - 338 A-Square Mag Cal - An Awesome Story	DarylS	17/12/17 10:34 AM

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