Looking for input on 300 win mag or 300 wsm

[Beowoulf2000]

I own a Model 16 in 300 WSM. It’s the only rifle I hunt with. I spent quite a bit of time on paper exercises trying to figure out if there was something interesting I wanted to do with it. There wasn’t much that caught my eye. But while reading up on the round and what was possible, I found this thread: https://www.longrangehunting.com/threads/300-wsm-long-action-build-input-welcomed.167249/
There is a lot of love on that forum for 300 WSM in a long action. Perhaps it’ll help with your decision.

[Mtpilatus]

May have to do a Beowulf as well. ;)

[Mtpilatus]

Which is better for reloading, ease of reloading and brass and brass life? I started out looking at the 300 win mag because of all the available factory loads, but now that I am going to reload, I started considering the 300 wsm since I have an AR10 chambered in it and if it is built on a short action, there are a lot or options for stocks/chassis.

[nksmfamjp]

So im simply asking, but how far would you think it might be before say a 230 gr caught up with a 190 gr shot from a 300 Win mag using a max load?
Try them both at say 1000 yds and see which takes less clicks on the dial to get there.
So that leaves the question of is a 190 enough to kill a deer? lol
While your at it, shoot the WSM also, and count the clicks on that as well.

Huh?

[tobnpr]

No practical difference in ballistics at any given range between the Win Mag and WSM.
I'm building one (short mag) as we speak, on an M700 (short) action which I've modified to accept the Wyatts extended length box mag.
For heavy VLD's, the additional length is a plus in a long action- so it's obviously suited for that.

Depending on the bullets (I'm just getting into running the numbers), looks like those in the 200 class will need the chamber to be throated longer, as the SAAMI spec chamber has zero freebore.
With a long action, there would be all the room in the world to seat even the heaviest VLD's all the way "out" (maximizing case capacity)- but again, freebore is the issue.

I've not owned/reloaded for a belted magnum- but that's another consideration if deciding between the two.

[Mtpilatus]

So what's the longest oal/biggest pill for each caliber? Barrel chamber will be saami spec'd. Have a long action that will probably be used.

[tobnpr]

^^^
No way to know, every bullet is different- even identical or near identical weights can have different seating depths to the bullet ogives depending on whether they're secant or tangent.

Since your chamber/throat is SAAMI, you'll just need to work with what ya got. I do think you'll need to be under 200 grains to avoid seating depths well into the case.

[ninner]

If you have an AR10 in 300wsm it’s a no Brainer, why add another caliber?


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[mikeinco]

the us navy used them because THEY WERE AVAILABLE FOR TESTING, NOT ENOUGH BERGERS ON THE SHELF.
so the navy round he speaks of will lock up a stnd 300 win mag action.
the load is 3.5" not 3.34, the mil does not reload, a case full of h1000. the use a stiller custom action not a savage.
and a 26+" lilja bbl.
OHHH AND 68KPSI NOT SAAMI 65KSI
and a custom 300 wm reamer( i own one)
none of this is a kit gun made from off the shelf parts.
i have one, i shoot both the std mk248 mod1 (220) load, and i shoot
230 bergers even faster with reloader 26.
i also just built a 300 wsm...target rifle
300 wsm is much better in a long action...bullet choice does not impact powder volume.

there is a die made for sizing belted mag brass at the belt..then it lasts a long time.


Simply because they work.
A 220gn smk will shoot way way out there.
And within any normal range 1200yds will anchor animals.

The US Navy use them for a reason.




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[mikeinco]

pretty silly to build a rifle and limit yourself to a saami chamber.
you can throat for a bullet and not mess with brass chamber size.
most custom 300 wsm's are done on long actions

[mikeinco]

decide what bullet you want to shoot, what distance and then work on which case/chamber..

[mikeinco]

there is a big hazard listening on the internet
yes the navy shoots a 220 smk
specifically in a SEAL mk13(mod7+) sniper rifle
with a stiller action not a savage
with a custom reamer, not saami
at 3.5 oal, not saami 3.34
at 68kpsi, not saami 62kpsi
with a case full of h1000 to get 2800 fps, which you cannot do with saami specs
i have a mk13 sniper rifle, it is not a savage off the shelf parts gun
do not try this at home

[hamiltonkiler]

I think he said new barrel.
Get you a barrel. Do some research.
26”+ heavy contour.

I don’t care what action it’s on with a bolt gun. It’s not going to crack or blow.

If you want performance, shoot performance.

Talk to your barrel guy about chamber dimensions.
IMO push the round right tight up the pipe.
Let it fly.


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[hamiltonkiler]

the us navy used them because THEY WERE AVAILABLE FOR TESTING, NOT ENOUGH BERGERS ON THE SHELF.
so the navy round he speaks of will lock up a stnd 300 win mag action.
the load is 3.5" not 3.34, the mil does not reload, a case full of h1000. the use a stiller custom action not a savage.
and a 26+" lilja bbl.
OHHH AND 68KPSI NOT SAAMI 65KSI
and a custom 300 wm reamer( i own one)
none of this is a kit gun made from off the shelf parts.
i have one, i shoot both the std mk248 mod1 (220) load, and i shoot
230 bergers even faster with reloader 26.
i also just built a 300 wsm...target rifle
300 wsm is much better in a long action...bullet choice does not impact powder volume.

there is a die made for sizing belted mag brass at the belt..then it lasts a long time.

It’s just a Remington off the shelf 700 action with a barrel.
Savage works fine.


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[Mtpilatus]

Thanks for all the input and all the insights and experiences. It will be built on a ss long action. I am kind of leaning towards the won mag because of all the factory loads available even though I will be hand loading.

[mikeinco]

as usual you are WRONG.
IT IS A STILLER MK13 ACTION, like STILLER TAC300 WITH LOSER TOLERENCES.
do not listen to this guy.



It’s just a Remington off the shelf 700 action with a barrel.
Savage works fine.


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[hamiltonkiler]

You know.. I wonder who made this post?
https://uploads.tapatalk-cdn.com/20200922/28f794928d589a257c1b8ab40bd6b04f.jpg
Then you ran into this
https://uploads.tapatalk-cdn.com/20200922/a58b390dfe230d3511f674495277fa85.jpg

All I’m saying brother is you can build a 300wm on a savage action and get it to shoot a 220gn smk.

His rifle doesn’t have to look like or be a navy gun.

https://uploads.tapatalk-cdn.com/20200922/458d43294731ca876c54c6fcdd70232b.jpg


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[mikeinco]

lol....maybe you should get someone to read the whole thread to you.
inspite of the kriger bbl...it did not shoot.
A FAILURE.
GLAD YOU POINTED IT OUT.
maybe there is a reason i said to not do it on a avage action...been there done that,,,failure.


You know.. I wonder who made this post?
https://uploads.tapatalk-cdn.com/20200922/28f794928d589a257c1b8ab40bd6b04f.jpg
Then you ran into this
https://uploads.tapatalk-cdn.com/20200922/a58b390dfe230d3511f674495277fa85.jpg

All I’m saying brother is you can build a 300wm on a savage action and get it to shoot a 220gn smk.

His rifle doesn’t have to look like or be a navy gun.

https://uploads.tapatalk-cdn.com/20200922/458d43294731ca876c54c6fcdd70232b.jpg


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