![]() ![]() You will need to aim 87.5 meters ahead to hit him. Your enemy is flying at about 175 m/s, so will travel about 87.5 meters in that time. 5 seconds, from the time you fire to the moment your rounds hit. Well, if you're attacking a 190D-9, who's flying perpendicular to you at it's top sea level speed of nearly 400 mph, and you are firing from. Your own velocity will change relatively little.Ī P-51 at cruise speed, will be firing his 890 m/s M2's out at an extra 134 m/s, so about 1,020 m/s practical.Īt it's rip speed, it will be only 220 m/s, meaning only about 100 m/s more. But after 1 second (Or any interval of time, really), the bullet fired with the higher muzzle velocity will still have a higher velocity, and have travelled farther (translates to less lead). With that bit about muzzle velocity, you had it kinda right but you messed up the result.Ī bullet fired at 800m/s is going to lose 100m/s faster than the same bullet fired 700m/s. That's why head on are so deadly, cause the relative velocity of a bullet is the sum of both planes' speeds + the muzzle velocity. There's also the consideration of the enemy plane's speed, because if they are slower, the relative velocity of the bullet is higher than if he is faster than you. For your enemy, however, if you go faster, the bullets will have a higher velocity and hit harder. If it's not, you can't see the difference because the muzzle velocity is always the same from your perspective. I don't know if this is modeled in-game, but for the same muzzle velocity, a bullet fired at higher speeds will slow down faster than when it's fired at lower speeds, meaning you have to lead even more at high speeds. That will most assuredly increase scores.The reason muzzle velocity is important is because it doesn't change with the speed of the aircraft, so it's a good reference to lead your target when firing. I understand there has been an increase to 20fpe for FT. I feel that velocity, sub speed of sound of course, is your friend when contemplating shooting vermin - or FT. RWS R-10 pellet, has a maximum of 28ard zero and is over 3" low at only 40yards and 8 1/2" low at my Hatsan's zero range of 50yards. My 600fps FWB however, set up for the same 1" hitting zone and using an 8.2gr. Even to 60yards, when using a range finder I have no need yet for even thinking of using the mil dots for long range zeros. The maximum height of the pellet was at 35 yards, at. For gopher shooting, I figured my best zero range was 50yards, which then dropped. 177 that is pushing 968fps with JSB 10.3gr. It will also give you wind drift, mil dot zeroing, drop, hitting zone for whatever measurement you want.įor example, I ran the trajectory of my Hatsan BT65. Plugging in the speed your rifle produces at the muzzle will instantly give you the retained velocity to whatever maximum range you desire. Chair gun lists a number of available pellets with their BC's. The rate of deceleration is not as high as one might think. Please correct me if my interpretation is incorrect anywhere along the line. A high muzzle FPS with low target FPS is not 'better' than a low muzzle FPS with low target FPS. So if you have a lower FPS at the muzzle, it doesn't mean that your gun is less powerful so long as you can maintain it to the target. What people fail to realize is that it's the FPS at the target that matters. 177 and certain pellets, but over just a few yards it drops off considerably. FPS doesn't really mean squat because OK you might have 1000 fps at the muzzle with a. What I have come to find is that with airguns the muzzle velocity drops off very quickly compared to perhaps firearms. in the UK) have a typical muzzle velocity of between 600-650 fps, but again, if you could even reach a target that far. I've also taken shots at birds only about 20 yds away and some seem to have actually flown off BEFORE the pellet has even reached them! With a full-powered shot, you can actually see the pellet travel against a light or dark background. There is no way that it covers 550 ft in 1 second. I have especially taken notice since I've had my '550 fps' Ratcatcher. ![]() I've always been sceptical about claimed airgun muzzle velocities.
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