It may be difficult to give references for this off the web. I will try, you might want to ask a chaiwalla or some sort working on FCS software in the meantime.Prasad wrote:Wait, what? I'd like to see something to back this up. I wont dig up facts to back your statement. So before you throw statements like that, please do give us some reference to what variables various FCS' use and how smoothbore uses less variables compared to rifled bores, simply due to a higher velocity round.Sanku wrote:So yes, given a FCS (software+hardware), a moving target, a moving platform, quick reaction times, long range engagements, uncertain winds etc etc etc. -- a high velocity round will always be "better" for accuracy, since the mathematical model being executed by the FCS, will have lesser real life variables whose performance would be different from the model.
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Added later >> Not exactly what you are looking for but look at this wiki page for example
http://en.wikipedia.org/wiki/External_ballistics
Predictions of several drag resistance modelling and measuring methods
The table shows that the traditional Siacci/Mayevski G1 drag curve model prediction method generally yields more optimistic results compared to the modern Doppler radar test derived drag coefficients (Cd) prediction method.[19] At 300 m (328 yd) range the differences will be hardly noticeable, but at 600 m (656 yd) and beyond the differences grow over 10 m/s (32.8 ft/s) projectile velocity and gradually become significant. At 1,500 m (1,640 yd) range the projectile velocity predictions deviate 25 m/s (82.0 ft/s), which equates to a predicted total drop difference of 125.6 cm (49.4 in) or 0.83 mrad (2.87 MOA) at 50° latitude.
The Pejsa drag analytic closed-form solution prediction method, without slope constant factor fine tuning, yields very similar results in the supersonic flight regime compared to the Doppler radar test derived drag coefficients (Cd) prediction method. At 1,500 m (1,640 yd) range the projectile velocity predictions deviate 10 m/s (32.8 ft/s), which equates to a predicted total drop difference of 23.6 cm (9.3 in) or 0.16 mrad (0.54 MOA) at 50° latitude.
The G7 drag curve model prediction method (recommended by some manufacturers for very-low-drag shaped rifle bullets) when using a G7 ballistic coefficient (BC) of 0.377 yields very similar results in the supersonic flight regime compared to the Doppler radar test derived drag coefficients (Cd) prediction method. At 1,500 m (1,640 yd) range the projectile velocity predictions have their maximum deviation of 10 m/s (32.8 ft/s). The predicted total drop difference at 1,500 m (1,640 yd) is 0.4 cm (0.16 in) at 50° latitude. The predicted total drop difference at 1,800 m (1,969 yd) is 45.0 cm (17.7 in), which equates to 0.25 mrad (0.86 MOA).