Think wide at the top where you rest the gun, and not too high. Too high youll loose a lot of shots because of body position, especially in hilly country. Shooing downhill become difficult. . lower offers more flexibility because you have your spine working for you.. Wide = faster target acquisition because you don't have to turn the bike full on to the target. Think padded also. Hard give you a lot of vibration transferred through to the firearm. Soft give you a lot of cushioning..
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