sumatra 2500 .25 cal air rifle

[Guest]

I had full size sumatra.. Older patch with larger bore needing 253sized bullets. The thing is that if you want to move heavy bullets I would not choose Sumatra. There is power to do so I was shooting 53gr cast bullets for 950fps+ but it all comes down to barrel and twistrate... Sumatra has 1:18 and after my testing that 53gr was about biggest that twist was able to balance and even some 50gr BT bullets didnt fly steady.. Also you said you want to buck wind better than 22LR.. Oh well that 53gr was 0.074BC where standard 22LR bullet is 0.12-0.13 so wont be happening without rebarreling.