So far I've reduced the model as follows:
1543 vertex (was 2706)
2200 triangles (was 1886 faces = quads = 3772 triangles ?)
Almost a 1/2 reduction - still massive for a turret.
- Cannon reduced to 1543vtx 2200tri (shading inaccuracies due to vertex color AO)
So far the model looks almost the same, mostly removed redundancies -
ie. multiple faces on the same plane and some smaller details.
The model's origin was shifted to the point where the model has contact to flat ground.
And the base has been extended to stick in the ground even if the surface is sloped.
Note that the six plain smooth cylindric coils were replaced with hexagonal coils
which add more detail to the model at about 1/2 polycount.
Can't archive roundness with polygons so I wont try
[well if linwarrior had bumpmapping...]