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Question about accuracy in long vs short spear

John Marr

Well-Known Member
Aug 1, 2007
56
5
48
Hello,
I am still optimizing my selfmade railgun, trying to figure out if a longer or a shorter spear delivers better accuracy if given the same barrel length and rubbers.
I am comparing 115 vs 85 cm at the moment. Obviously with the longer one I can get a bit closer but the shorter one has way better maneuverability, especially with fish like Cero which might come very close at times.
I guess the longer spear would hold its path in the water a bit better, right?
 
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John Marr

Well-Known Member
Aug 1, 2007
56
5
48
Ah. Thanks. I guess I'll build a target and then compare both of them with multiple shots and distances
 
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Benthic

Member
Aug 7, 2015
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0
11
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Destin, FL, USA
Shorter will be more rigid and less prone to shaft whip, but have less mass and sometimes people don't like the short overhang because it gives a different sight picture. On personal guns I usually prefer to go to a short overhang but slightly larger diameter shafts
 
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John Marr

Well-Known Member
Aug 1, 2007
56
5
48
Hmm, also I am a rather small guy, so loading shorter guns is easier.
I shall try a 7mm maybe.
Did you do some comparisons?