Originally Posted by bsl135
The 190 will be stable from a 1:12" even at .308 Winchester velocities (~2600 fps). What stability calculator are you running that suggests you need 3000 fps?
The 210 is the only bullet that won't work from your 1:12".
Thanks for replying Bryan.
I'm using the analyzer/twist and stability module in Loadbase.
Here's the parameters that I used:
1.375 (I mic'd a few of the bullets and they were all within .001 of this value
Miller Method results: 1.35 Under Stabilized
Greenhill Method results: 1.49 Under Stabilized
At 2,900 fps the results change to:
Miller Method results: 1.40 Under Stabilized
Greenhill Method results: 1.49 Under Stabilized <-- didn't change
At 3,000 fps the results change to:
Miller Method results: 1.41 Under Stabilized
Greenhill Method results: 2.14 Fully Stabilized <-- Big jump
On a side note- without blowing myself up or damaging my firearm, I determined the max charge for IMR 4350 and the 190 gr VLD this morning. 48.5 grs has slight primer flattening but no other indicators. I'll back off 10% from there and work my way back up to a load that shoots well.