i am assuming that the Tanaka M700 Airsoft Gun is a sniper rifle. therefore, it will have about 400 to 500 FPS. i would go with the .25 if you want accuracy, if you want range, the .20. i have an electric G3A3 rifle, i use just precision .20 bbs in i...
I have a Tanaka M700, it shots 550 Fps with .36 g BBs. It hurts like like hell to get shot by.
Two thumbs up for Ken Tanaka! Thank you for sharing that.