7 Mag vs 7-300,worth The Effort?

SporterII

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Nov 23, 2006
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#1
180+ gr. 7mm bullets for long range target are of interest.
Brass not being an issue, the Rem mag seems to be the easy button. Does the 300 case really make a worthwhile improvement?
 

Tazman

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Jun 18, 2004
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#2
I have a 7-300WSM which shoots the 180 Berger at 2980 with H1000 all day long. Could easily push it harder but the node shoots better than .5 moa.
 
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Bradu

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Aug 24, 2011
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#3
300 win mag would gain you a fair amount of speed over the 7 rem mag. It is more work to start out but isn't too bad. I neck down in three steps using bushings for my 7-300 norma. I loaded up some rounds with a random load and hit 3 in a row at a mile last weekend. 3050 with a 195 Berger but I can run it faster than that. I will be doing load development soon to see where it will shoot good.
 

knuckleballz

Elk Hunter
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Dec 12, 2013
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#4
I analyzed this very thing for a year and decided to go 7mm rem mag. If I can approach 3000fps with a 180 grain in 7mm rem mag with much lower cost and also have the factory ammo available in almost any city in America, it was the logical choice for me for hunting. But then again, I am building a speedy 22 creedmoor that will burn barrels like the 7-300.
 
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Bradu

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#7
West Texas Ordnance has a wildcat they make that's a necked down and improved 300 Norma. They're driving 180gr bullets in the 3300 fps range, and 195s to 3200. I have no idea what the barrel life is like, but the ballistics are pretty impressive... https://westtexordnance.com/7mm-300-norma-improved/ - I kinda want one, just because... LOL
I would guess around 700 rounds but it all depends on how it's ran.
 
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Speedarino

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#8
7-300WM has a lot to offer. Around 3000fps with Berger 195s, very manageable recoil, plenty of brass ( although Norma is scarce currently), 1000+ barrel life, 2000 yds+, and the ones I’ve seen shoot! Just had a recent discussion on load data regarding same.
 

rth1800

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Sep 16, 2009
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#9
I have used 7mm mags of about every size you can imagine for over 45 years.

7 300 is very good. 7rem is ok but about my last choice. 7 weatherby is good. I currently use 7/300 and a 7 on a necked down 375 H&H case not improved.

The 7 STW was not a fovorite but ok.

7/300 weatherby about same as STW.

My odd choice of 7/375 is based on being able to get one more round in magazine of magnum Mauser action. 4vs 3. Also having access to Mag Mauser actions and unlimited 375 brass.

Used it all over world for many years. Capacity identical to 7/300 win.
 

Hoyt7mm

Bow Shooter
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Apr 6, 2017
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#11
I've had fantastic luck with my 7-300wm shooting 195s under H1000. I am very tempted to get a barrel spun up for a 7-300PRC depending on how the 300 PRC takes off. Think it may be a good choice with added neck length, and shorter OAL (I currently have to single feed if I play with the 197 SMKs)