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speargun ??

Thread Status: Hello , There was no answer in this thread for more than 60 days.
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robchong13

New Member
Mar 31, 2009
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I have a beuchat 105 I love it, My ? is, it has 2 14mm rubbers. I was thinking about switching to a single 18-20mm sling, will I be overloading the gun or should the gun be just fine.
Also I live in Hawaii will the gun be practical hunting some open water fish like 60-80 lb ulua(jack), or mahi. thankyou
 
From some "back of an envelope" type calculations we did last year, I reckon your 2x14mm bands would have approximately the same power as a 20mm band. So I don't think you will overpower your speargun. However, loading will be noticeably more difficult (but faster). I would suggest starting with an 18mm (or 16mm) band and see how that goes. I've used guns with 16, 18 and 20mm bands & prefer the 16mm bulk rubber configuration for the UK - it's plenty powerful.
 
robchong13 said:
hows about 2 5/8 bands ??
Click to expand...
To convert inches to mm just x 2.54.

So 5/8 = 15.875 ~= 16mm band. In fact it v. likely is exactly the same as we call 16mm as the SA companies & some euro-companies resell USA rubbers.

2 x 16mm is a classic high power rubber configuration for Rob Allen rail guns - he usually offers 1x16mm, 1x20mm or 2 x16mm - and that is in order of power ...and spear thickness. The 2x16mm configuration is usually supplied with, I think, a 7 or 7.1mm spear -- check out the Rob Allen website at www.roballenc.co.za and take a look at the spearguns tab for details though.

However, it is possible that you may run into problems if your spear is quite thin (it might flex & become inaccurate) and/or have no rail. You could try it and if you run into problems look at getting a thicker spear and/or a stick-on rail (such as that made by Omer). Or maybe try something less conventional, like1x16mm + 1x14mm!

blaiz might be able to offer some local insight.
 
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It really depends on how thick your shaft is. I use a riffe 110 here in hawaii and it came stock with 2 5/8 bands (~16mm i think) and I felt it was a little over powered for the stock 17/64'' shaft, and was a bit inaccurate. I downsized to 2 9/16 (14mm) bands and like it very much. If you are using a 5/16s shaft you would probably be ok with 2 5/8 bands. I have also found a big difference in the color of the bands. Black bands seem to have a little more punch and power for the length, the down side is that they can be too powerful and the rot faster. I use amber rubber now and really like the smooth feel and they last two to three times longer than black bands.

When it comes down to the nitty gritty its all personal preference.

Your gun sounds like a good size for hawaii. Uluas are typically found in holes and caves so a 100 to 110 is a good size as they are more maneuverable than a blue water gun but still have the range and punch needed to take down a bigger fish. The main thing that will determine whether or not your going to land a fish is the set up you are using. And the set up will be different for reef, cave, or blue water. Also the specific group of fish you are targeting.

As far as blue water hunting its not an ideal size but thats not to say you couldnt land a mahi or ono that was stupid enough to get that close to you. Mahi are definitely that stupid the hard part is finding them.
 
on my gun i have 3 5/8 bands but most of the time i just shoot one. its a little longer than yours and a woody but as long as there is not to much recoil you'll be fine
 
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