Hi @paulstaab,
I was attempting to understand the affect of admixture on the SFS, when I came across an inconsistency (likely my misunderstanding) between ms and scrm. If I run the following code:

scrm 20 100 -t 142 -r 195 10001 -I 3 0 20 0 -n 2 0.5 -n 3 0.25 -es 0.08 2 .2 -en 0.08 4 .025 -ej 0.08 4 1 -ej 0.08 2 3 -ej 1 1 3
avg segsites scrm: 176

ms 20 100 -t 142 -r 195 10001 -I 3 0 20 0 -n 2 0.5 -n 3 0.25 -es 0.08 2 .2 -en 0.08 4 .025 -ej 0.08 4 1 -ej 0.08 2 3 -ej 1 1 3
avg segsites ms: 466

If I change the code to -I 3 20 20 20, the results are the similar: ms=930, scrm=896

Is this something I am misunderstanding?
thank you,
@stsmall