Hello, I've shot 7stw's for years but I'm about to have one built and the builder wants to put a 1 in 8 twist. He says it'll handle the bigger bullets better. Anyone have any luck with that twist? I'm currently shooting Hornady A-Max bullets 162g
Barrel twist?
- Thread starter Coorcan
- Start date
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dok7mm
Well-Known Member
1:8 for 195s, will also be fine for 180s
I have always shot the 1:9 for the 180s, also fine for lighter pills. Depends on which you will shoot.
I have always shot the 1:9 for the 180s, also fine for lighter pills. Depends on which you will shoot.
I really don't plan on shooting anything over 168. Any advantage in the 1:8 twist for bullets between 160-168?
dok7mm
Well-Known Member
None, a 1:9 will do want to want. I shot a lot of 140s to 162s in mine. I have switched to the 180 Berger hybrid now, but the 1:9 shoots them all very well.
MudRunner2005
Well-Known Member
I spent years shooting 140-160 class bullets in mine (mostly 160 SGK's and 160 NAB's), but once I started reloading years ago, I started trying the Berger 180 Hybrids, and never looked back. I have 3 boxes of the 195's, but I don't have a 1:8 twist barrel, so it would just be a waste of bullets.
You should give the 180-195's a try... The STW really shines with the heavies.
You should be just fine with 168's and a 1:8 twist barrel. You should see no detrimental affects.
You should give the 180-195's a try... The STW really shines with the heavies.
You should be just fine with 168's and a 1:8 twist barrel. You should see no detrimental affects.
If you ever switch from lead to solid copper, there could be an advantage.
Thanks for the reply's. My main goal is to have a 1000 yard gun with a hunting bullet. I've shot many of the builders guns in a 7mm and 28 Nosler and they do shoot so I don't want to second guess him on the build just want to be sure I have the best configuration for what I want
They sure sound interesting. I just like em whistling a little, main reason I've never tried that big of a bullet. Maybe I need to get out of my comfort zone and try the 180's
dok7mm
Well-Known Member
For consistent accuracy @1K, you will need the heavies, so maybe you should rethink 1:8 twist.
Re-think it as in don't go with the 1:8 or do?
Ok thanks for the Help!
MudRunner2005
Well-Known Member
Fixed that for you...
Well Sierra says you need a 7.5 for their 197s, but other than that, the 8 covers up to the 195s.Fixed that for you...
