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I have found threads that talk about it being a good designed tool but have come up empty in my search. It looks like he has not posted for a few years. thanks,

Sumo #2 is in the works and twin 500cc ti tubes with reg are on the list.

I think I like Gary B method. I might add a stop collar to control the depth though. Way easy. I also thought of grinding a tool with two cutting edges and useing the haas to broach the ramp with a very steep thread cycle and control the depth by recutting it in Z depth over and over untill...

I think its time I start on a project that has been on the back burner for sometime now. I have a PTG one pc bolt and the heat treated stainless bar with the EDM work done. I suppose I could cut them as a surface on my haas mill but it would have an improper radius in the corner. I been...

I spoke with Bob Pastor of Viper Benchrest about chambering. He is well known for his work and is a competitive shooter as well. Currently up in Canada for two weeks of shooting F Class matches and doing well. He was very helpfull on the phone and has youtube video's that I followed and have...

If he can shoot a Marauder right handed with a lefty stock from wood blocks and do that good I cant wait to see how things go for him from here on out.

Hats off to Daniel!!!!! That is outstanding shooting. Looks like you all had a good time and shot well. Thanks, for the report.

God I hope there is two L's or I am in trouble.

Not really. The screw insert does not go all the way to the valve body. Only the transferport hole does and it is so easy to do on the side compared to the set up for the transferport and insert hole.

Now we just need to see if it shoots as good as it looks!

Yes I think I will have to add the trigger guard when I get it back on the west coast after Rick gives it a good trial run. I pretty much ran out of time to get it done. I also sent along another triggerblade that is longer with an Anschutz trigger shoe. I wanted to swap it out before sending...

The Sumo is ready to Wrestle!!!!!! Got the action pillar bedded, Assembled, leak free, Test fired a bunch, Picture ceremony and now its out the door to Rick Ingraham to play with, have fun Rick

At Revision #7 so far. Things never go just like you want the first time. Got rid of the hex. Moved on to slots to turn the insert down and they also help to blow the oring outward.

Well I have had some time to work a little more on the Big Boy. Doing some shooting with it over the chrony I just tossed it together with a baseline set up that would be 30ftlbs with a standard .228 transfer port and probe design and produced 39 ftlbs with a .156 transferport. I think it is...

I know there are some newer more airgun specific barrels from benchmark and other makers but I have seen a number of the 3 groove tight bore .22 from benchmark and pushed JSB's through them and inspected under a microscope and the imprint looks outstanding on the head and skirt. The Sumo Rick...

I think it works out to like 546cc but may loose some to end caps even though I dish them out. I think a 50fpe gun can be regged these days.

I have been making the titanium tubes and end pieces and Dan Brown fits his reg into it. I am working with Gordon and Dan to take them over since Dan does such great regs and Gordon will need a supply of them for all the guns he is doing. I have sent some to Maxbar inc for destructive testing...

We will have to see just how accurate and consistantly accurate these new class of airguns can be. The open and unlimited class is still just starting but it does show promise. I have never built one to this level before so I am on edge to see what Rick can do with it. and the stock is the...

Thanks, Now here is the stock I just inletted tonight.

I hope he does too so I can get feedback from both of you guys.. Do you think the polished stainless is to much?