7mm stw with 195 berger eol

[willowwolfe1975]

Hi all,

I have built a new 7mm STW. The build is as follows:

28" lijja medium weight barrel.
1:8 twist.
Custom brake - by my smith.
Accurized Rem 700 action.
MDT ESS chassis
Trigger tec trigger.
Custom chamber to shoot Berger 195 grain EOL bullets.

Brass - Hornady.
215 primers.

I am planning to start developing loads using retumbo, IMR 7977, and IMR 7828.

I need specific start load data for one or all of powders. I know that I will start below any suggestions given. I have contacted IMR, Hodgon, and berger. No load data has been provided.

Any help would be appreciated.

 

[LONG RANGE 7MAG]

I have a GAP STW that shoots the 195s. 26" Bartlein. I use Nosler Brass,Federal 215s, 75 grains RL 26. 3050 fps. I shot 2 deer with it this year, one @ 510, the other @ 475. I also shot a black bear @ 867. The things a hammer! Shoots under .5 moa all day long. RL 26 rocks!

 

[MudRunner2005]

Hi all,

I have built a new 7mm STW. The build is as follows:

28" lijja medium weight barrel.
1:8 twist.
Custom brake - by my smith.
Accurized Rem 700 action.
MDT ESS chassis
Trigger tec trigger.
Custom chamber to shoot Berger 195 grain EOL bullets.

Brass - Hornady.
215 primers.

I am planning to start developing loads using retumbo, IMR 7977, and IMR 7828.

I need specific start load data for one or all of powders. I know that I will start below any suggestions given. I have contacted IMR, Hodgon, and berger. No load data has been provided.

Any help would be appreciated.

I would wait to hear back from Berger. They would be the most likely to give you load data.

 

[Honkey1]

Berger had load data for my 280AI and the 195s with several different powders. Good folks to talk with.

 

[Excavator]

7mm STW
195 Berger Elite
73.8 gr RL 26
Nosler case
OBL 3.022
Mv 3015
Gun built and loaded by Mc whorter

 

[Capt RB]

Has anyone tried Rl33 with the STW? Seems that would be a good option in the big case also.

 

[RemHutch50]

I'm pretty ignorant about some of this stuff. What is the "STW"?

 

[Honkey1]

I'm pretty ignorant about some of this stuff. What is the "STW"?

Necked down 8mm Remington Mag, if I'm not mistaken. Developed by a writer for Shooting Times magazine. Name escapes me, but I believe his last name was Lane.

 

[MudRunner2005]

I'm pretty ignorant about some of this stuff. What is the "STW"?

The 7mm STW (Shooting Times Westerner) is a cartridge that was developed by Layne Simpson in the late 1970's as a wildcat, that was quickly standardized, adopted, and chambered in factory rifles by Remington. It has been a long-time proven long range hunting and shooting cartridge.

 

[MudRunner2005]

Necked down 8mm Remington Mag, if I'm not mistaken. Developed by a writer for Shooting Times magazine. Name escapes me, but I believe his last name was Lane.

Yes, it was developed by necking-down the 8mm Rem Mag cartridge to 7mm. Layne Simpson was the editor/writer/contributor for Shooting Times magazine, and has been for decades.

 

[dukxdog]

Has anyone had success with IMR8133 Enduron in their STW? I just bought some to try under 160 & 175gr bullets.

 

[Satterlee Scott]

I've tried IMR 7828. It's super temp sensitive

 

[MudRunner2005]

I've tried IMR 7828. It's super temp sensitive

I've had the opposite experience with 7828. I've found it to be very stable in over 40º temp swings. I've had temp sensitivity with H1000, and most claim it's not sensitive.

 

[Capt RB]

To show how times have changed Layne developed this round around the 140's at 3400ish fps.