Gtscotty
Member
- Joined
- Jul 2, 2007
- Messages
- 3,635
I was poking around the SAAMI website and noticed a new cartridge I hadn't heard of before on the "New Cartridges" page.
https://saami.org/wp-content/uploads/2020/11/6.8-Western-Public-Introduction-Orig-2020-11-01.pdf
It looks like a stumpy .270 WSM with the salient changes appearing to be:
- Same head and shoulder diameter, but shoulder is pushed back ~0.080.
- Load OAL is also 0.080 shorter, better to fit heavy bullets at short action lenght.
- 8 twist barrel
- Reference load is a 175gr bullet at 2,840 fps.
Who knows if anyone serious is backing it or planning to make so-chambered factory rifles (probably not) but it sounds like an interesting fast twist/heavy bullet evolution of the .270 WSM. I wonder if any mainstream bullet makers are really planning on coming out with these 175gr .277 bullets?
In related news, it looks like the 6.5 Weatherby RPM was SAAMI standardized in September as well.
https://saami.org/wp-content/uploads/2020/10/6.5-WBY-RPM-Public-Introduction-Orig-2020-09-27.pdf
https://saami.org/wp-content/uploads/2020/11/6.8-Western-Public-Introduction-Orig-2020-11-01.pdf
It looks like a stumpy .270 WSM with the salient changes appearing to be:
- Same head and shoulder diameter, but shoulder is pushed back ~0.080.
- Load OAL is also 0.080 shorter, better to fit heavy bullets at short action lenght.
- 8 twist barrel
- Reference load is a 175gr bullet at 2,840 fps.
Who knows if anyone serious is backing it or planning to make so-chambered factory rifles (probably not) but it sounds like an interesting fast twist/heavy bullet evolution of the .270 WSM. I wonder if any mainstream bullet makers are really planning on coming out with these 175gr .277 bullets?
In related news, it looks like the 6.5 Weatherby RPM was SAAMI standardized in September as well.
https://saami.org/wp-content/uploads/2020/10/6.5-WBY-RPM-Public-Introduction-Orig-2020-09-27.pdf