7-300 win mag AI

Wild Monkey

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Joined

Oct 16, 2017

Messages

427

• Jun 18, 2021

• #15

Cool Round! I'd like to know any tricks to forming this brass before firing, I have some ideas about using box ammo converted.

 

D

dogz

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Jan 11, 2006

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3,016

Location

SWMT

• Jun 18, 2021

• #16

RockZ said:

Very subtle difference.
It's about 3 grains more in the improved version.

Click to expand...

Probably pretty darn close to the 7 Mashburn Super that's been around since the 60's or so. Love those Big 7's!

 

Wild Monkey

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Joined

Oct 16, 2017

Messages

427

• Jun 19, 2021

• #17

I find 300 Win Mag is the only Magnum ammo for sale.

 

R

RockZ

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Mar 10, 2006

Messages

959

• Jun 22, 2021

• #18

I sold it to a buddy a while ago and he loves it

 

archeratlrg

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Jan 30, 2012

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184

Location

Helena Montana

• Apr 2, 2024

• #19

RockZ said:

Very subtle difference.
It's about 3 grains more in the improved version.

Click to expand...

What's you shoulder blown out?

 

archeratlrg

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Jan 30, 2012

Messages

184

Location

Helena Montana

• Sep 10, 2024

• #20

RockZ said:

Very subtle difference.
It's about 3 grains more in the improved version.

Click to expand...

I know this is an older thread, but what is it blown out to on the shoulder?

 

V

Victor3Ranger1

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Jun 5, 2024

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738

Location

Ponca City Oklahoma

• Sep 10, 2024

• #21

calib said:

think you may have that figured out, where you shooting over the chrony when you shot the seating groups? you plan on shooting any of the bigger stuff out of that? i would be interested to see what it would do with a 180 berger. I am running the straight 7-300 win with a 180 at 3140

Click to expand...

That's what I want is a straight 7-300 win, I don't know why but I do.

 

calib

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Jul 15, 2008

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868

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North west

• Sep 10, 2024

• #22

It shot great.

 

Wild Monkey

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Oct 16, 2017

Messages

427

• Sep 11, 2024

• #23

archeratlrg said:

I know this is an older thread, but what is it blown out to on the shoulder?

Click to expand...

Here's the picture he posted with the 40 degree shoulder after fire forming

archeratlrg​

 

archeratlrg

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Jan 30, 2012

Messages

184

Location

Helena Montana

• Sep 19, 2024

• #24

Wild Monkey said:

View attachment 601181
Here's the picture he posted with the 40 degree shoulder after fire forming

archeratlrg​

Click to expand...

Thanks, I knew it was 40 degrees but was it blown out to a wider diameter on the shoulder, say to .492 or .495? Any idea?

 

F

floyd kittrell

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Joined

Feb 21, 2012

Messages

541

Location

Spanish Fort , Alabama

• Monday at 10:40 AM

• #25

How much longer is the AI "NECK" over the 7-300 to run heavier longer bullets ??
Thanks, F.K.

 

T

troupe

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Joined

Feb 13, 2012

Messages

686

• Monday at 11:27 AM

• #26

Try the STW, very easy of the big bullets at great speeds, or the 28 Nosler. All are extremely accurate and laser flat shooting.

 

F

floyd kittrell

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Feb 21, 2012

Messages

541

Location

Spanish Fort , Alabama

• Monday at 11:34 AM

• #27

Mr. Troupe, will the 7 STW throw a 175 grain cup and core bullet 3300FPS out of a 26" barrel?

 

tomcat818

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Joined

Aug 14, 2024

Messages

89

Location

Eastern Oregon

• Monday at 2:34 PM

• #28

Basically this is a 28 Nosler with a belt and 40 degree vs 35 degree shoulder. Am I missing something?