Yes, it's possible. There's a couple ways to do this. One is to just create a walk cycle in the walk designer that goes for 300 frames (you can specify the length in the walk designer). OR... search for a python script called "repeater". You can tell it to take the first 30 frames of an animation, and repeat them as many times as you want (in your case 10 times) starting from whatever frame until whatever frame. You can specify to repeat only certain body parts or the entire motion of the figure (all body parts). I've used repeater, and it works OK, but remember to tell it to start at the next frame after the last frame you want to repeat, and have the target number of frames present in the animation... for instance, if you want the animation to repeat for 300 frames, make sure you add those extra frames to the existing animation before running repeater. PS: Always BACK UP your existing animation to a PZ3 file before running any python script, just in case. Poser sometimes does unpredictable things with animations along the timeline that you might have to go back and fix.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.