Progasm black ice maximum travel

So last night after inserting my progasm I started pushing it out slowly to the point of almost popping out while exhaling through my belly, then inhaling into my belly as I slowly pulled it back deep inside me. As I concentrated on relaxing and breathing in and out of my belly and pushing it out till it was at it's stoping point ( this model kinda locks in at the last ring with out falling out) then squeezing it back in again over and over the voluntary reflexes started but I still had to manually work it as well to get the full travel from almost coming out to deep inside me as the voluntary reflexes seemed like shorter strokes.  To get such a long stroke you know that all is lubed very well.  Sometimes it would start slipping out or not start pulling back in then I would help it in with slight pressure with my finger.  This was such an amazing feeling as it slowly moved in and out like something was penetrating me that was very long and thick.  I was mostly on both sides at times and also on my back. No supper o to this point but it was very good.  I finished up an amazing jerk and a good load.  Has anyone of you ever took the long stroke to the limit?