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Old 08-11-2013, 09:02 AM   #1 (permalink)
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SL68II love?

I have an old SL68II that I did some cosmetic modding on sometime back. Filled the grips and contoured them etc. Never really tried to do anything performance wise as it was meant to be a cheap loaner/backup pump. So as it sits lanquishing on my wall since I have far superior pumps, anyone have suggestions on things that can be done to it to make it more worthy of getting used more often? I know J&J sells a barrel for it. Thought about maybe getting one and sending it out for freak boring. I have an adapter that makes it so I can use larger feedneck hoppers, but anything else that can be done? Anything that can be made to make the pump strong lighter? Smoother? Never tried it, but how do these things run on HPA?
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Old 08-11-2013, 04:02 PM   #2 (permalink)
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I own a SL68II and had Stanchy freak bored the barrel to eliminate the rollout issues. I also tried running it with HPA with no luck. I could only get it to shoot around 240 even with a great ball to insert match and was told by a Tippmann tech via email that they are designed for CO2. I have heard of cases where some can use HPA. Try your luck. I have also seen some amazing mods done to them. I recall seeing center feed mods and setting them up to run on 12 grams as well.

Love mine and I will never sell it. It is fun, with a sportshot it is lightweight and reliable.
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Old 08-12-2013, 01:56 AM   #3 (permalink)
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for hpa try giveing the gun 900, 950, or 1000 psi input.
my sl's love 950 psi. do that and youll get 280-290fps
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Old 08-12-2013, 02:29 AM   #4 (permalink)
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I can't remember how detailed the man got (maybe some pictures); but someone talked about drilling and tapping the meat where the barrel clamping screw is located to insert nylon tipped 10-32 grub screws to act as guides for the pump rod. One on each side, and he was able to eliminate the twist in the pump handle.

Not being the strongest guy myself, I was able to fasion a pump handle using an extra A5 grip frame that allowed me to pump the gun easy and fast enough that I could get the hammer to latch onto the bolt without air every now and then. I don't recall being able to do that with the stock pump handle.
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Old 08-12-2013, 11:59 AM   #5 (permalink)
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dansoslow you need to adjust the lenght of your guide rod.
that can be done with a longer guide rod.
your stoke is longer than it needs to be.
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Old 08-13-2013, 07:39 PM   #6 (permalink)
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Size:  183.1 KB let's see if this pic uploads.
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Old 08-13-2013, 07:42 PM   #7 (permalink)
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It might need a hit man mod for the pump.
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Old 08-13-2013, 08:12 PM   #8 (permalink)
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How many shots do you get off a 12 gram?
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Old 08-13-2013, 08:14 PM   #9 (permalink)
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Good question. I honestly haven't taken it out since I built it. Life kinda hit me like a ton of bricks and I haven't played recently. But let me see if I can get some idea. Though my 12 grams are dubious at best. They are made for brewing beer. Lol
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Old 08-13-2013, 08:24 PM   #10 (permalink)
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Looks like 28ish decent shots... I am kind of curious what I could get with a little more devolumizing (sp).
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