7mmSTW vs 7mm remington ultra mag

FEENIX

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Not supposed to mention this but the absence of the belt on the RUM is a big plus. Or should I say the belt on the STW is a negative. If reloaded several times, the belt and the web will swell and is very difficult to resize. Also causes extraction difficulties when swelled. I had big Weatherby that cracked two bushing dies trying to size the belt and area just above the belt. I chambered two or three STW's but brass was available then. If going with a belted cartridge, make sure your chamber is not "fat" in the back of the chamber or problems will occur
I reload quite a few belted chamberings without any issues as you noted. However, just in case it does, I have a collet resizing die to remedy the issue.

Collet resizing die 1.jpg


 

Cowboyblaster

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I own all three of the big 7’s 7 RUM, 28 Nosler and a couple 7 STW’s out of all of them I prefer the STW! It’s the easiest to load for and the most accurate of the three. They are all pretty much overbore rounds. I run the same Bullets in all three with the same powders, either Retumbo which is my go too or H1000. I have replaced barrels on all three a couple times. Currently all three are running 28” Bartlien heavy sendero. I shoot both with and without a can. I run either the 168 gr Nosler ABLR or Berger 195 EOL all running the 168 ABLR at 3352 fps the Berger is limited to 3,200 as they will not stand up to higher velocities! I have pushed the 168’s faster in all three chambers but that’s my sweet spot. The STW is 0.25 MOA, the RUM 0.75 MOA and the 28 Nos is right at MOA. All three have taken elk over 1K. The RUM tends to go through barrels the quickest!
I like hearing this thank you i asked a question and have learned way more than I thought I would through alot of guys on here i certainly appreciate all the first hand knowledge
 

Cowboyblaster

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I do like the idea of faster and flater so mr Butterbean please talk to me about these hammer hunters I've been hearing alot about on this forum because if the accuracy and terminal prefomance is game changing i would probably become another convert . I think i heard they are solids and i really like that idea if the make a big enough hole
 

Cuz

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Magnolia, texas
The 7x300 Wby. is the cartridge that ended the life of the 6.5x300 Wby for long range hunting in Pa in the early 70s.
Reason being that Hornady had introduced the 162 gr bthp match bullet.
Later the STW came along which was created by using the 8mm mag case.
The 2 cartridges are pretty much twins as for performance.
Used only for hunting they will last a lifetime.
The 7mm ultra on paper at least will have a slight velocity advantage over both.
Im still using the same 30” Hart 9 twist barrel Howard Wolfe chambered for me in 1973.
Back then there were very few suitable powders, and many of us used H870.
89 gr with the 162 gr bullet would produce about 3200 in my gun except on very cold days.
About 15 years ago i switched to 7828 powder and picked up alot more velocity.
Using the same bullet 3350/3400 isnt a problem.
Go slowly because the door slams fast and hard with that powder.
As for bullet weight with any of those cartridges, we find that the 162 gr shoots flatter at 1200 yards than the 180 Berger does.
In other words it takes less clicks on the dial.
If you havent actually done an actuall comparison i suggest you do before just assuming the heavier bullets will outperform the lighter ones.
At some point of coarse they will, but fact is that it will be beyond 1200 yards.
Which brings up the question of how far is too far for those cartridges?
My longest kill to date was 1200 yards with the 7x300 Wby.
That distance is also considerably further than most long range kills are made.
But i personally wouldnt be using that cartridge for another shot at that distance.
So my question is why the need for the heavy bullets for a 7mm?
In my opinion its because BC sells bullets.
But without the velocity, its just BS.
If you have one of those cartridges i suggest you go try what ive said before commenting.
you’re right, the stw and 7-300 weatherby are virtually identical ballisticaly. I shot 7828 in the stw and also use it in the 7-300. I do shoot the 180 hybrids , about 3130 fps. its my favorite 7mm cartridge and my main hunting rifle
 

ButterBean

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I do like the idea of faster and flater so mr Butterbean please talk to me about these hammer hunters I've been hearing alot about on this forum because if the accuracy and terminal prefomance is game changing i would probably become another convert . I think i heard they are solids and i really like that idea if the make a big enough hole
There is a small group that has done some extensive testing and there is another test going on this week, We have made almost every shot ( Including gut shots) on a lot of critters from 1800 pound Bull's to Rabbits and the results are always the same, The Hammer is a total game changer as it does the same thing every time no matter where or what it hits, The faster you push them the more spectacular the results, I assure you that they will not disappoint
 

GLTaylor

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Hammers (either Hammer Hunters or Absolute Hammers) are no different than other bullets as far as throat erosion goes. Erosion is a function of powder volume burned and pressure generated. If you load to lower pressure you get less erosion and less performance. You get best performance with higher pressure and higher velocity. Hammers are rather amazing in their performance and terminal effects.
 
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