Aquahunter, congrats on the acquisition. Those are interesting pics, you should upload them to a picture hosting site and embed them in the post instead of attaching them. This way they can be viewed in original size and the details can be seen better.
What diameter shafts are with the Prodanovich gun? And what fish/hunting was it meant for?
Man I loved Tarzan books when I was a kid.
Hollow ground is not simply tri-cut, it's more complicated and more sensitive to hitting rocks. It's a nice jig but I'm not sure how many shafts that little grinding wheel will sharpen before it gets too small and needs changing.
Ingenious, thanks Don. I wonder if it's comfortable on the foot.
I use these Fiskars titanium shears (Fiskars Titanium Nitride No. 8 Shop Snip 12-79266984), pretty cheap from Home Depot. I cut a lot of Dyneema and never had to replace them yet, it's been at least a couple of years.
Welcome to Speardiver.
Nice modifications!
The middle gun in the pic of the 3 guns, doesn't the swept back handle make it hard to load on your foot? Or do you use the loop for that?
16lb Ling Sonoma coast.
Quote from John/Yowlie
Suit going strong after 15 months of solid use.
Thanks Don, that's exactly what I was trying to figure out; what stops the shaft from turning inside the triangle/jig. I think I may be able to make a simpler and more secure jig utilizing the flopper hole and a pin.
Thanks for the explanation John, but I don't get it. I need to see how it's done.
Dan, It's really simple actually. Same concept as your cross hole drill jig that you sale. That one is based on 90 degree angles. Now we need to think 60 degree. There are many ways to do it, methods based on the tool box that one has.
Can you get any more vague? 
I heard that before and don't understand it. How do you stop the shaft from turning inside the jig?
Welcome to Speardiver.
You must never miss Hank
Fish can make amazing recoveries, see this thread http://spearfishing.world/gene…n/1357-fish-injuries.html
It was meant to be
El Marco is catchy, I vote to make it official
First thank you for sharing the videos Marco.
I think you're too good to demonstrate anything conclusive about the performance of the roller gun, as close as you got to those fish you could've shot them with a pole spear.
An interesting video would be loading that gun to get it ready for action as quickly as you can.
The real question is after a couple more dive trips using the roller and getting your curiosity satisfied, will it become your go to gun?
Was the rubber amber to begin with?
Good story. Since it was lost I hope the fish makes it.
Possibly you shot high and went right through him and the tip hit something behind the fish causing it to bend. I don't think there's anything in a fish that will bend a tip like that. I think your gun is enough for even the largest cubera at such close quarters.
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To me an enclosed track is just about convenience, though there may be other benefits. So I'd do a short gun just as well.
