Createdman...
I have planted red berries, marked the location, and followed up on them thru to sprouting.
Even though one berry with 2 seeds was planted in the berry... when they sprouted they came up 2-3 inches apart.
The top inch or two of the soil actually moves around quite a bit especially during winter cycles with freezing and thawing... and a red berry that is planted, and undergoes the normal stratification period... goes thru two winters so there is lots of soil movement that happens over that time and from my experience it will separate those seeds more than you think it would.
I have dug a many big stout healthy ginseng that had a twin growing right beside it... hoping that it was a double top... to find out nope... it was just a couple of individuals that very well may have come from the same berry.
I also tend to think that on the 3rd day the ONE that created all of these seed bearing plants knew what he was doing
Can a man help the situation out some... I think you are probably right, we might be able to if we took the time to do that, separate those seeds a little more.
One exception I might have to that is when conditions are really dry... those seeds staying inside that berry would be protected just a little bit longer from drying out.
Hope you have Great Success with your plantings.
TNHunter