7mmSTW vs 7mm remington ultra mag

ButterBean

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😂 😂 😂 🤦‍♂️ oh give me a break dude .. of course its my opinion everyone has one ,,, and i edited my comment too what I was actually trying too say .. but let me ask you this.. if you were "building" a 7rum or 7mm stw or a 7-338 lapua improved or 7-300 norma improved or anything of this case size or even a 7rsaum .... wouldn't you build it right from the get to get optimal performance out of it ?? or no? that's all I'm saying. so wouldn't that mean to the specs that everyone is capable of not mine alone?? to ultimately achieve greatness with said rounds?? or do we just build guns to sammi specs and hope for the best LOL????

The OP asked for a non biased opinion based on experience with both which I gave in a simple statement based on actual facts that I've attained personally .. which apparently went against your biased opinion

and done right means a lot of things, powder choice, brass choice, primer choice, etc. not just the rifle
No offense intended but It's your story Bud, Tell it how you want to, edited or not you said what you said, I for one don't have that kind of money so my last build was indeed a SAMMI Reamer and recommended by my Smith So I'll just keep building "Average" stuff as obviously I am nom where near your level , I do have one question though, are you kin to MudRunner or GerryBaker by any chance, There is your break " dude", As you were
 

ButterBean

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@Elk Hunter 338 I agree 100%. I tried to say this early on but you know how it is. MudRunner 2.0 starts calling people MudRunner when proven wrong 😂😂😂.
There is no right or wrong, it's all opinions ( Mine included ),In the end it's personal preference and what the OP wants to build, I still can't believe you haven't started beating the Needmore Drum yet as much as you praise it's Ballistic Superiority It should make the 7 RUM look like a BB gun, I have said numerous times they are both fine and capable rounds but as I am limited to mostly factory actions and SAMMI reamers the STW works better for me, It is interesting that every time I mention Ole Mud You get all up in a tizzy, You two must have been tight, No offense intended
 
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Lefty7mmstw

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The only thing giving the 7rum any real advantage over the 7mmstw is the extremely long throat that a saami reamer has in 7rum. they are both so overbore there is little real difference in real world velocity between the chamberings given the same apples to apples comparison one should really give to hotrods like these. Pick the same throat for both: ie. 1 or 1.5 degree lead angle and .2"... .4" length... use two barrels of the same brand/ twist/ etc.. You will see less than 3% gain from the 7rum mathematically... One barrel acting fast with a given powder and the next acting slow can more than negate the difference ( or accentuate it a bit)...

This thread has turned into campfire chatter and really does no service to either cartridge.
 

ButterBean

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The only thing giving the 7rum any real advantage over the 7mmstw is the extremely long throat that a saami reamer has in 7rum. they are both so overbore there is little real difference in real world velocity between the chamberings given the same apples to apples comparison one should really give to hotrods like these. Pick the same throat for both: ie. 1 or 1.5 degree lead angle and .2"... .4" length... use two barrels of the same brand/ twist/ etc.. You will see less than 3% gain from the 7rum mathematically... One barrel acting fast with a given powder and the next acting slow can more than negate the difference ( or accentuate it a bit)...

This thread has turned into campfire chatter and really does no service to either cartridge.
We've danced this dance a couple of times aint we Bud
 

Lefty7mmstw

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We've danced this dance a couple of times aint we Bud
yup...
gets a bit old...if you really need a bit more than one of the two, a step up in bore diameter is really in order. They (and the 28 Nos) are all so similar it's really more the loading intensity, etc. (how far you are willing to push the rifle) and what the landed on accuracy load actually is. I've had a couple of barrels that wanted to be loafed along. My Sendero 7stw was happy at 3500 fps with a 140ab; I backed it off a bit to 3400'ish fps to save on brass and bore life. My longest kills with a 7rum were a 140 sierra at 3450 fps... the difference doesn't matter at all to me.
 

mk443

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My old factory 7 Rum 26 inch barrel
96.5 grs of RL 25
180 Sciroccos
3625 fps
My friends 7 stw could not get there, even with a 27 1/2 inch barrel.

😳😳😳😳😳😳😳😳
That might be a land speed world record with a claim like that…..
That’s hundreds FPS faster than a Allen Mag with 15 more grains of powder and more barrel…
 

Northkill

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My old factory 7 Rum 26 inch barrel
96.5 grs of RL 25
180 Sciroccos
3625 fps
My friends 7 stw could not get there, even with a 27 1/2 inch barrel.
That's so far above realistic bud. Might want to consult your records and/or confirm chrono accuracy like BB says. ;)
My 7 Allen Mag pushes the 150 BD-2's to 3,711 with 107 gr of RL-33, and the 195 EOL's right at 3,300 with 100 gr RL-33. Never tried the 180's but guessing they'd run 3,400 - 3,500. The 7-AM is an ego trip and for sure a barrel toaster, but it is on a whole other level from the RUM/STW class and not really part of the OP's interest, so my apologies for injecting.
 

Lefty7mmstw

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I think You may need to invest in a new Chronograph
I think he's mixing up the 7rum and 300 rum.... even at that he's over on charge on 180's enough that any rifle that's not about shot out is going to have serious issues. I run 94 gr rl25 in my 300rum with a 180 just over 3300 fps and she'll put a very mild shiner on in hot weather... I've run old lots of I 5010 to over 3400 fps in a 300rum with a 180 but that powder went bad on me and I simply don't care to try to duplicate with another powder.
 

ButterBean

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I think he's mixing up the 7rum and 300 rum.... even at that he's over on charge on 180's enough that any rifle that's not about shot out is going to have serious issues. I run 94 gr rl25 in my 300rum with a 180 just over 3300 fps and she'll put a very mild shiner on in hot weather... I've run old lots of I 5010 to over 3400 fps in a 300rum with a 180 but that powder went bad on me and I simply don't care to try to duplicate with another powder.
I feel your pain
 

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