info on 6.8 wsm ptg chamber?

[bjork]

can someone give me some basics on what this chamber was designed to improve upon vs the 270 wsm? would it require custom dies or could i use 270 wsm dies? to my eyes it appears to be a 270 wsm case with the shoulder pushed back and shorted a bit. possibly designed to keep the ogive of vld's out of the case mouth in a short action? thanks.

 

[highdrum]

Appears to have a fair bit more freebore than saami spec for say a 170 Berger bullet seated out a bit.

 

[bjork]

useful in a short action? would it hose me if i was running some 110 tsx rounds as well?

Appears to have a fair bit more freebore than saami spec for say a 170 Berger bullet seated out a bit.

 

[bjork]

i have a fn tsr wsm action. the internal mag box is a hair over 3" if memory serves me. i have 8.5 twist blanks on hand. also a 9 twist.

 

[elkaholic]

Sounds like its modeled after my SS case
Just buil an ss and have better brass thats head stamped.
shermanwildcatcartridges.com

 

[highdrum]

useful in a short action? would it hose me if i was running some 110 tsx rounds as well?

The Bergers arent depth sensitive so even id it doesn't seat all the way to lands I'm sure you could get it to shoot well still. 8.5tw will work with the 170s, I've never shot Barnes bullets, other than the match burners which are jacketed not mono, so I'm now sure how they function in fast twist barrels.

 

[bjork]

thanks for the replies. i'll likely stick with the 270 wsm due to the cost of brass and dies.

if anyone is interested in the 6.8 wsm, here's a good deal on a finish reamer.

https://www.ebay.com/itm/PT-G-6-8-W...923148?hash=item364c65064c:g:vasAAOSws7xcw4Lm