7mm STW Reloading Thread

[7mmstwnorge]

i think the us made gunpowder is less expensive at your place, as the vihtavouri and norma gunpowder is cheaper over here,

 

[WildRose]

the h-1000 is even more expensive here, about 50$ for a pound(can)

What makes of powder are available there at the best prices? Knowing that would help shorten the list of possibilities.

 

[MudRunner2005]

the h-1000 is even more expensive here, about 50$ for a pound(can)

That's what Vihtavuori powder costs over here.

 

[7mmstwnorge]

What makes of powder are available there at the best prices? Knowing that would help shorten the list of possibilities.

What makes of powder are available there at the best prices? Knowing that would help shorten the list of possibilities.

we have available allmoste all the us and norma, vitha and som swiss and german powders alltso

 

[WildRose]

we have available allmoste all the us and norma, vitha and som swiss and german powders alltso

A very long time ago I worked up an elk load for a friend using Norma MRP and the 175gr partition. The most accurate load we came up with was 70.4 Grains with CCI magnum rifle primers. We just loaded them to mag length.

 

[7mmstwnorge]

A very long time ago I worked up an elk load for a friend using Norma MRP and the 175gr partition. The most accurate load we came up with was 70.4 Grains with CCI magnum rifle primers. We just loaded them to mag length.

i use 73gr of norma mrp with nosler 168gr custom competition ,its a tackdriver in my rifle,
rem 700 custom with lohtar walther barrel 1:9,25 twist 26" and a musselbrake at the end

 

[WildRose]

i use 73gr of norma mrp with nosler 168gr custom competition ,its a tackdriver in my rifle,
rem 700 custom with lohtar walther barrel 1:9,25 twist 26" and a musselbrake at the end

With the 9.25 twist you're probably on the bubble stability wise with anything 180gr or heavier. Before buying the heavier projectiles I'd suggest looking on the mfg's website to be sure.

Admittedly I'm not big fan of max loads and running the heaviest possible bullet. Barrel life is longer with slightly stepped down loads and if you're not shooting small stuff beyond 600yds the difference in BC isn't enough to make much difference.

The STW is hard enough on barrels without pushing the limits.

 

[MudRunner2005]

we have available allmoste all the us and norma, vitha and som swiss and german powders alltso

If this is the case, then I would recommend trying IMR 7828 SSC, IMR 7977, and H1000.

 

[7mmstwnorge]

With the 9.25 twist you're probably on the bubble stability wise with anything 180gr or heavier. Before buying the heavier projectiles I'd suggest looking on the mfg's website to be sure.

Admittedly I'm not big fan of max loads and running the heaviest possible bullet. Barrel life is longer with slightly stepped down loads and if you're not shooting small stuff beyond 600yds the difference in BC isn't enough to make much difference.

The STW is hard enough on barrels without pushing the limits.

im trying to reach 2800yards, but maybe i have to change the barrel, i need long stable bullits

 

[MudRunner2005]

im trying to reach 2800yards, but maybe i have to change the barrel, i need long stable bullits

Then I recommend buying a .408 Cheytac...It's much more purpose-built and suited for this task.

But if you plan on attempting this with a 7mm STW, you will need to build a custom rifle with a really long barrel shooting some super heavy high-BC bullets.

 

[WildRose]

Then I recommend buying a .408 Cheytac...It's much more purpose-built and suited for this task.

But if you plan on attempting this with a 7mm STW, you will need to build a custom rifle with a really long barrel shooting some super heavy high-BC bullets.

If I wanted to shoot that far I'd buy a .375 Cheytac.

 

[WildRose]

im trying to reach 2800yards, but maybe i have to change the barrel, i need long stable bullits

Check the twist recommendations on any bullets before you buy them, otherwise you're liable to end up sadly disappointed.

 

[jweigel]

I use VIT N570 and 195 EOL with a custom 8.25 twist 30" Bartlein 7STW. I also found that powder to be amazing in a factory 7RM Sendero with 180 VLD. I tried the same powder/bullet STW setup when the factory 9.25 twist barrel was on and it did not shoot the best, but man could you get a lot of speed compared to Retumbo.

 

[jpretle]

Surprised there isn't more use of the Ruger #1, in this chambering. You get a 26" bbl in a shorter format than w/ any bolt gun. Running long throated rounds is a cinch, as there is no magazine to acomodate.
I run a 160 Nosler Partition at 3300+, using H1000. It just hammers elk, but elk are not on my menu any longer.