hello everyone

i'm going through my first built of a spudgun, and i'm gathering the parts and doing research. I'm gonna use a 75mm barrel, but the valve i found is 1/2" in diameter. Will this difference in diameter impact my pressure/firing distance?

hello, first time builder (and poster) here, i'm planning out to build a spud gun using compressed air, the classic tank - valve - barrel design, but i was looking for an electrical valve so i could just push a button to shoot, but i'm having doubts. the one i have my eye on is 1/2 inch in diameter,...