Anyone shooting 180's in the STW

[birdog]

Info needed from anyone actually shooting 180 Hybrids in the 7 STW.
What is your powder of choice and what MV at you getting.
What group size at 100 yards can I expect.
Twist.
Are you shooting a heavy barrel bench rest gun or sporter.
I am only looking for info on 180's, 183's, or heavier.

Considering a STW barrel for a long range benchrest rig. 2 K plus.
Thanks in advance!

 

[dkhunt14]

I'd bet RE33 would make then go and shoot good. It seems to work great in big cases with the heavier bullets. Usually great velocity with great accuracy. Matt

 

[wvlongshot]

Do a 28 nosler, no belt to fool with

 

[FeMan]

I tried the 180's in my STW but don't have enough twist (mine is 1:10). The 180's stabilize in my 1:9 284 fine, but the 175 ABLR did not (it is longer). I haven't run stability calcs recently but am guessing a 1:8.5 or 1:8 would be the best choice for twist. Air density plays a role in stability so if you are shooting at higher elevations you have more room to play with twists. I love my STW but have been disappointed in velocities using heavier bullets (over 150 grains). I get around 3150 with 168's but 3400 with 150's. As said above, the 28 nosler seems like a better choice for the heavies.

 

[dkhunt14]

Wow I would have thought more velocity out of a 7 STW. I know some guys shooting a 7WSM getting 3200 with them. Matt

 

[jws]

Rl 33 and 195 bergers are now my bullet of choice in a 9 twist 29" #6 stw.
I have only tested to 600 yds but hold under 1/2 moa.
Settled on 3080'fs to see how that nosler brass will hold up ,but they will
run over 3200.

 

[Dusty Stevens]

Id try something without a belt

 

[tclaunch]

Nosler makes 338RUM brass, and I just happen to know a hungry gunsmith with a 7/338RUM reamer and 7mm throater.....

With the speeds I was getting for antelope loads with 140`s, I`m thinking 3200 fps without hammering the brass with 180`s.