This is another favorite of mine. It really needs a tail cone though. I might have been better done in T3.
My bro did one in 1:1 scale back in the mid 1990s as his L3 project. He finished the rocket complete with olive drab paint scheme and flat black lettering but never installed the electronics. He never never did fly the rocket but he used it for many years as part of a lecture series on rocketry he presented to high school physics classes. The week long talks on rocketry included the kids building Big Berthas and culminated in two days of launching the rockets tracking the rockets and doing the math to figure how high they went. I spent those days at a tracking station with various kids recording the data and radioing it in but the kids did all of the actual tracking and interpreting of the data. We did this every year for about ten years untill we eventually moved from the area. We left our six rod launch stand and controller with the school and I understand they still build and launch Big Berthas every year. In fact it is about that time of the year, as I recall they did this in late April or early May. One of the really cool things about these launches is that the grade school classes would often show up to watch. There is no telling how many kids became interested in rocketry because of this.