What do you think? 270 WSM and 169.5 Wildcats

bigngreen

Well-Known Member
Joined
Nov 24, 2008
Messages
8,336
Location
SW Montana
I was wondering what barrel twist and length would make the 270 WSM and the 169.5 Wildcats play nice. Would it even be a viable combo, and what do you think it would do?
I currently am pushing a 140 AB @ 3341 fps with 71gr Rutumbo in a 26in barrel.
 

bigngreen

Well-Known Member
Joined
Nov 24, 2008
Messages
8,336
Location
SW Montana
I've been running number on the JBM calculator and if I can keep the velocity in the 3000fps range it would raise my energy by 50% at 1000yds without much trajectory loss.
I am going to burn my factory barrel up faster than I had planned due to how fun it is to shoot. I'm thinking that if I could get the 169.5's to work it would really boost the LR hunting potential of my 270 WSM when I rebarrel.

What twist rate is being used in the 270AM with the 169.5 Wildcats?

Thanks for the replies!
 

Fiftydriver

Official LRH Sponsor
Joined
Jun 12, 2004
Messages
7,149
Location
Fort Shaw, Montana
All of the 270 AMs I have built use a 1-8 twist. This is slightly more then needed. I believe a 1-9 would also work just fine but Lilja did not offer a 1-9. I have used some Rock barrels in 1-8.7 twist that worked very well.

For the 270 WSM, I would likely stick with a 1-8 twist. Again, probably a bit more then needed but fully adiquate is much better then marginal.

I designed a round based on the 270 WSM simply for a 1000 yard BR class chambering using this exact bullet. With a 2900-3000 fps velocity in a 26-27" length barrel, it would be extremely impressive and would have outperformed the 7mm WSM loaded with the 180 gr Berger even if that round got 3000 fps.

In the end, I figured a properly built 270 WSM was so close that it was not worth the investment to move the project past that point.

Simply put, I think it would perform great.
 
Top