i am by no means an expert, but based on my research, there is a tremendous amount of misinformation on the actual sizes of giant snakes, particularly Burms insomuch as, for example, the largest scientifically verified mainland Burm was a wild female who was 18.10 feet - the average for wild mainland Burms is 12 feet - the averages for captive females is 12-16 feet, and for captive males it’s 8-14 feet - minimum length 7.9 feet - dwarf Burms range from 6 feet to a max of 8.2 feet but everything with giant snake sizes depends on diet, conditions of development, genetics, etc - a moderately fed, slow grown Burm will not be as large as an identical Burm who was power fed and overgrown on purpose - i think if it was crossed with a ball python it would be significantly smaller than a normal mainland or dwarf Burm and, if fed moderately, would not reach any giant size by any means