Hey guys, its been a very long time. I previously used the name "*###*" I lost access to my account and it seems I'm sol as far as recovery is concerned. I have built many more great toys over the years and I felt like getting back into the community to share my knowledge as well as to learn and bec...

I usually shoot at 2000 psi. The pilot volume is almost non existent, so it opens with a sharp bang. I am currently figuring out how to go about attaching the sights. But honestly its fairly easy to aim as is. Although it would be cool to see the performance at 50-100 yards. I'd put this thing up ag...

Here's what I'm shooting.

I'm shooting 360 grain slugs at the moment. At 1800 psi it shoots clean through 2" plywood. No hesitation at all. At 3000 I feel like it could drop a grizzly bear. A chronograph is pretty high up on my list but currently I dont have any actual number for performance.

So I've put something together, its a hybrid clone of my phenumatic rifle. Right now they share a barrel but it will get its own dedicated when complete. For the time being I have had a few successful test shots at 10x using the chart from the forum. They are hard to repeat. But I have had some succ...

Since posting i believe i have figured out my issues. I noticed that if I leave the gun sit for roughly a minute before firing it goes off reliably. I increased the chamber volume aswell.

I am in the process of creating a "venturi" fuel mixing system to mix the gasses as the chamber is filled.

So a little update, I did a little shooting. At 1000psi I got 586 fps. Roughly 275ft/lbs. At 3000 I launched the chronograph across my drive way and I to several pieces... so not real performance data. How ever in the never ending quest of moar-power I have assembled a hybrid out of nearly identical...

Unfortunately I did not. I know you guys want videos! I am here in Colorado and we have snow at the moment... we should have some nice weather coming up. Maybe this weekend... I have switched over to my hybrid though. As far as I am concerned this thing is complete, a smashing success. I even replac...

If you find some with the right size head, you dont need to remove it and it will apply some drag stability. I like the nails for hanging pictures.

I have made a few pen guns, always thought shooting small nails was fun. Or "skewers" work as well.

So you guys were on the money. I was lean for sure. I think higher mixes helps aswell. I have been successful up to 30x with roughly 20psi propane 420psi air. Now it seems to be on par with the phenumatic counterpart. I do intend on mounting it on a stock or something of the sort. Like a bulpup conf...

The "t" fitting that I use is a "street t" so it has one set of male pipe thread. The front of the piston sits inside the male threaded portion of the fitting. The back of the t has a 3/4-1" male to male reducer. The back of the piston sits in the 1" portion of the reducer. With out the reducer the ...

Does this make any sense? Art is not a talent I have...

Also it is a barrel sealing piston. The "face" sits inside the barrel instead of pressing up against it. The rear oring is a "floating oring" so air passes one way to fill the chamber. It cannot flow in reverse.

I dont know if you can make it out properly but this is a picture I have on hand.

The pipe is stainless, I am not sure what alloy...

Works fine for me. I have been up to 3500 so far. I did not do a hydrostatic test.