If unsupported area is radiused into supported via feed cone, wouldn't we see some evidence of the brass following the radius rather than be straight to a fissure with only the lower half exhibiting extrusion? I can see a tear causing such a clean slice, but an in battery blowout should be a bit jankier on both sides of the failure point.
It's an interesting thought.... both sides of this, where the only difference really is 1 microsecond of time.
It's an interesting thought.... both sides of this, where the only difference really is 1 microsecond of time.