Berger 6.5mm 156 gr. bullets. . .where are they???

I'd think a 8.5 twist in 264 WM is sufficient for 147 eldm. According to jbm stability calculation. More twist builds unnecessary pressure. Slowing the fps of bullet. Eventually I'm getting a new barrel for one of my .264 wm maybe a gain twist ? 26-27" 3240 fps 147 sounds terrific.
 
I'd think a 8.5 twist in 264 WM is sufficient for 147 eldm. According to jbm stability calculation. More twist builds unnecessary pressure. Slowing the fps of bullet. Eventually I'm getting a new barrel for one of my .264 wm maybe a gain twist ? 26-27" 3240 fps 147 sounds terrific.
This is with Retumbo, Winchester brass and HBN coated 147's.
 
I just checked the Berger site; they don't even list 156 grain bullets for the 6.5. The heaviest they go is the 140 grain.
 
check out Matrix new website 6.5 in 156 and 162 are being tested. I will be sending email after holidays to check availability
 
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