This is a tough question to answer when the length and weight of all the new bullets
obviously aren't known yet. But I can tell you what I'd do, go with the faster twist.
It really does depend on what you want to do. If you are satisfied with the 300 SMK
or it's equivalent, then go with the 10 twist. But if you are hoping for more, something
with a 0.9+bc, then go with the 9 twist. I'm waiting and hoping for an accurate hunting
bullet of 265 to 280 maybe 300 grains with a bc above that magical 0.9. To have that
bc those bullets will be nearly, or perhaps even longer than 2 inches. During the life
of that barrel there might be a bullet that needs even faster than 9 twist. But 9 will
get you a long ways.
There is the possibility that say the 300 Berger cann't handle that faster twist due
to a thin jacket. That's why I'm still waiting. Still hoping that a good Al tipped bullet
will show up. But wanting to be prepared if the Berger looks the best.
Hadn't heard that there was a 300 Amax on the way. The 510 caliber Amax has an
Al tip unless I'm mistaken. They used to make a 7mm 162 Al tipped Amax but quit
because it was tearing up their dies. Do you have any details about the 300 Amax?
Last edited by Varminator 911; 09-09-2008 at 06:07 PM.
That 300 Amax is supposed to have a bc near 0.9. They are supposedly installing the machinery
to produce it. But that tells you nothing about what twist it would need. Does sound promising
though as the Amax generally expand well at low velocity.
Last edited by Varminator 911; 09-09-2008 at 10:52 PM.
Hope to hear more about the gain twist barrel. I'd be concerned that a gain twist would be very hard on a thin jacketed bullet like a Berger VLD. You're going to be twisting that jacket very hard. Could see them possibly working on the monometal bullets with the narrow driving bands. Most of those bullets so far are solids.