tom, the 358 STA is on a full length,blown out,375H&H case,just like the 340 Weatherby case,8 mag,300 Weatherby, etc.So it requires the same action length as the 375H&H.

I had one years back,before they called it the "358 STA".It is a very good cartridge;but a bit much in the recoil department for me.It does an easy 3000+ fps with a 250 gr bullet,and about 3150 with a 225.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.