7-300 Win Mag: OAL for 180gr ELD-M

sask378 said:
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sask378 said:
https://atlasdg.com/wp-content/uploads/2025/01/Product-Spec-Sheet-New-Calibers-2025.pdf

Don't mean to hijack the thread. Just wanted to show you another option with quality brass available later 2025.

7-300 PRC
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At the expense if getting into a conversation on my choice of chambering (contrary to my first post)... lol. It's all good man!

The 7-300 PRC is huge, so is the 7 STW, 7 RUM and 28 Nosler. I'm trying to find middle ground inbetween those and 7 Rem Mag and 7 PRC.

That photo of a magazine you listed, who makes that?
 
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Archibald said:
At the expense if getting into a conversation on my choice of chambering (contrary to my first post)... lol. It's all good man!

The 7-300 PRC is huge, so is the 7 STW and 28 Nosler. I'm trying to find middle ground inbetween those and 7 Rem Mag and 7 PRC.

That photo of a magazine you listed, who makes that?
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Hawkins Precision
 
sask378 said:
https://mansonreamers.com/product/7-300-prc/
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The 7-300 PRC case is a beltless monster. It does have a larger diameter than the 300WM, and therefore has some issues fitting the Model 70... according to purveyors of the Trick Moves. That has been said from more than a few sources. Not a Model 70 expert by any stretch, tho.
The big advantage that it does have is larger case capacity with a shorter OAL, which means more velocity. Like 3250 fps with 180 ELD-M's.
If Archie is interested, a few dummy rounds could easily be tossed his way.
R.
 
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Rman said:
The 7-300 PRC case is a beltless monster. It does have a larger diameter than the 300WM, and therefore has some issues fitting the Model 70... according to purveyors of the Trick Moves. That has been said from more than a few sources. Not a Model 70 expert by any stretch, tho.
The big advantage that it does have is larger case capacity with a shorter OAL, which means more velocity. Like 3250 fps with 180 ELD-X's.
If Archie is interested, a few dummy could easily be tossed his way.
R.
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Thanks, but dummy rounds won't be necessary as I think that round is tipping a little too far into overbore territory for my liking. Plus it's a fatter case and I my particular Winchester 70 started out as a 300 win mag, and it will feed belted magnums without any trickery. I am doing most of the worknother than blueprinting the action and barrel installation so I'm not in the mood for playing around with feed rails.
 
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remington jim said:
Archie - My 7-300 WBee is running a 3.790 COAL ! is my Max i am using at the moment ! RJ
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Acknowledging that your case in the 7-300 Weatherbee is probably slightly longer than a 7-300 Win Mag, I am guessing that at 3.790 COAL the base of your 180 ELDM bullet sits at (or above) the neck/shoulder junction. That's more affirmation to me why I need to go with the longer COAL and upgrade from the 3.6 mag box to the 3.8 in the Winchester.

I'll be getting a carbide bit for the mini mill to open up the bottom of the receiver, or maybe I'll keep going at it the hard way with hand files like what I've done so far on the top side... lol. I'll provide an update in a couple of weeks when I'm back home and can get to work at it.

Thanks!
 
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