Ok, it sounds like a 10 is good for me to, wanting to shoot up to 210s
20” 30 caliber short mag, 300SAUM, WSM or Sherman Short
- Thread starter Mike D Texas
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You'll be fine with that...even up to 215s
codyadams
Well-Known Member
Unless you want to shoot monos. The 205 badlands SBDII's require an 8.5 twist. That is getting somewhat specialized though.....
I completely agree. Stay within the recommended twist or faster for whatever particular mono you chose recommends. I've always found the Berger Stability Factor Calculator helpful for determining proper twist rate, bullet, and velocity combination.
Why not? If he's getting 3100 in a 20" barrel on a non modified case I should be able to get it with 3-4 grains more powder capacity and only 10 grains heavier bullet.
codyadams
Well-Known Member
Disregard.
Those 10gr in bullet weight can make the difference, but could be close.
For reference:
2,900 fps with factory Norma Bondstrike 180 ammo in a 20" 300 WSM.
and that ammo seems to be loaded a little warm.
2,900 fps with factory Norma Bondstrike 180 ammo in a 20" 300 WSM.
and that ammo seems to be loaded a little warm.
ADG makes it already. I've got 200 pieces of it. Would be hard pressed thought to get 3000 FPS with a 208 though. Maybe 2900. I'm just starting load development with a 200.20X Berger. Hoping to get to 2900.
Playing around in Quickdesign and Quickload it looks like the WSM has a ~125fps advantage over the SAUM. But it would have to be run in a medium length or long action to seat the bullet above the neck/shoulder junction. I don't know if I want to jump into the pool of limited receiver, bottom metal, stock options and I'm finding very few stocks that are inletted for a medium action.
If I did the SAUM, I *should* be able to use the same bushing dies for the 6.5 SAUM and 300 SAUM provided I make the improved case dimensions the same (except the bore diameter of course). I can also set the 178 ELDX @ 2.965" and use either a 3" internal box or the Hawkins Hunter DBM.
All advantages lean toward the SAUM for me but I like speed as long as it's accurate and the WSM does have the advantage of ADG brass.
Still pondering……..
If I did the SAUM, I *should* be able to use the same bushing dies for the 6.5 SAUM and 300 SAUM provided I make the improved case dimensions the same (except the bore diameter of course). I can also set the 178 ELDX @ 2.965" and use either a 3" internal box or the Hawkins Hunter DBM.
All advantages lean toward the SAUM for me but I like speed as long as it's accurate and the WSM does have the advantage of ADG brass.
Still pondering……..
codyadams
Well-Known Member
ADG makes 6.5 and 7 SAUM brass too. Just neck it up to 30 cal.Playing around in Quickdesign and Quickload it looks like the WSM has a ~125fps advantage over the SAUM. But it would have to be run in a medium length or long action to seat the bullet above the neck/shoulder junction. I don't know if I want to jump into the pool of limited receiver, bottom metal, stock options and I'm finding very few stocks that are inletted for a medium action.
If I did the SAUM, I *should* be able to use the same bushing dies for the 6.5 SAUM and 300 SAUM provided I make the improved case dimensions the same (except the bore diameter of course). I can also set the 178 ELDX @ 2.965" and use either a 3" internal box or the Hawkins Hunter DBM.
All advantages lean toward the SAUM for me but I like speed as long as it's accurate and the WSM does have the advantage of ADG brass.
Still pondering……..
Yeah I know. I'm just kinda picky about properly headstamped brass.
I'm sure I could get over it though. ADG is what I will be running in my 6.5 SAUM.
I would rather do same also! If I was in a bind would be another story.
rooster740
Well-Known Member
If this is a hunting rig where foul weather may be encountered, ringing out every bit of speed at high pressure could be devistating if a follow up shot is required.
That extra 100-150fps is not worth it.
That extra 100-150fps is not worth it.
