7mm twist rate?

[Wadcutter]

Anyone got an opinion on the best twist rate for a 7mmWSM.

I note that most of the factory rifles that come out have 9.25 or 9.5 twists.
Is this good enough to stabilise the 180 grain Berger bullet? or would a faster twist be better?

If so what?

Also what would be an ideal barrel length for a 7mmWSM with a sporter weight barrel?

[Sean P.]

That should be fine for a Berger bullet.  When I was shooting 210gr VLD they wanted a 1 in 11 or faster so you should have no trouble.

[Inherent Advantage]

GRATE sight sean! I love it hear.

cool to sea a 210 7mm at 1-11"!

[Sean P.]

Thank you
To many forums out there that have a bunch of opinionated people that don't welcome new members.
So I wanted to do the opposite.
So on that note Welcome to LRS and if you have any questions please let me know
sean@longrangeshooter.com   

[Mike OBrien]

   Always a pleasure IA...   :{)

[Lucas B.]

As Sean says you'll be fine with that twist rate... If you're ordering a new barrel I'd go 1:9 as that's Berger's recommendation for the .284" 180gr VLD. Bryan Litz has a site on bravehost where he gives specific information about the stabilization of the bullet in question. He also happens to be the head ballistician at Berger bullets!

On my 7wsm I went with a 26" barrel. The BR guys often go longer but I felt I'd gain little in MV over 26" in length. I wouldn't recommend going much shorter than 24" if you plan to use the 180gr bullet which is usually best suited with slow burning powders.