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Johnoly
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Guns have an effective range and a total range. Just like a gunpowder type of gun it depends on the Caliber(size & length of shaft), the power propelling it (bands/pneumatic pressure), water conditions (currents, viz), enviroment (wrecks, ledges, rigs), and line/free shaft.
In general big gun, ie 70 inches, long range. Short gun 30 inches, short range.
Just my experience, but I've seen a 70 inch free shaft gun kill a grouper from 35 feet away and I've seen a 30 inch pneumatic bounce a shaft off a barracuda from 5 feet away. And just like powder guns, a 22 caliber pistol will kill just as good if not better than a 44 magnum. When it comes to spearing, accuracy is always better than power.
In general big gun, ie 70 inches, long range. Short gun 30 inches, short range.
Just my experience, but I've seen a 70 inch free shaft gun kill a grouper from 35 feet away and I've seen a 30 inch pneumatic bounce a shaft off a barracuda from 5 feet away. And just like powder guns, a 22 caliber pistol will kill just as good if not better than a 44 magnum. When it comes to spearing, accuracy is always better than power.
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