XS60C PCP Repeater project

[StevenG]

Is this the same gun with the oval shroud?

[stalwart]

Okeydoke - that looks much better!    Yeah, details like getting a gun built before shooting the bullets are a drag... ;-) :-D

These are samples made to give me an idea what I need to change, if anything. The band is .224, and the area scored is .217-.218. I don't think it would hurt to go .220 in the front, but this may fly as is.

[stalwart]

Is this the same gun with the oval shroud?

No, this is a Marlin .22 rimfire barrel I'm going to built into a bullet shooter.

[StevenG]

You sure have lots of stuff going on.
I somehow missed the PB barrel thing. That is pretty impressive work.

[rsterne]

I'm impressed with the appearance of the bullets.... it will be interesting to see if they shoot as good as they look.... What is the weight of the sample in the photo?....

A two-stage cocking hammer may be problematic if you stay with bolt-cocking.... may need a rear cocking design.... not great on a repeater....

Bob

[stalwart]

They are 31 grain.

LOL... I hadn't even thought about cocking the thing as a repeater. End up with a gun that's harder to operate than a backhoe... 

[RMM]

Is the MG going to be PCP or HPA??   

[rsterne]

The terms are somewhat interchangeable.... I assume by PCP you mean with a tube, while with HPA you mean using a tank (bottle).... Since either can be regulated (or not) that really isn't a distinction.... I don't know which stalwart is planning (or both), but I assume initially it will use a tube, but constructed for 3000 psi, running right through the receiver....

Bob

[RMM]

The terms are somewhat interchangeable.... I assume by PCP you mean with a tube, while with HPA you mean using a tank (bottle).... Since either can be regulated (or not) that really isn't a distinction.... I don't know which stalwart is planning (or both), but I assume initially it will use a tube, but constructed for 3000 psi, running right through the receiver....

Bob

Yes I was wondering if it would be tube or bottle and I would say you are correct with the tube Bob.  Learning something new everyday,such as, it's all in the terminology. 

[stalwart]

Yup... 3K tube. I like the idea of packing the weight of the reserve, off the gun. 8 rapid shots is enough for a hunting gun, around here. Never hunted grouse, but if they'll stick around for more than 8.... I'd definitely gear up for them!

Eventually, I'll build something so hungry it needs an affixed tank. Maybe this winter...

[RMM]

Yup... 3K tube. I like the idea of packing the weight of the reserve, off the gun. 8 rapid shots is enough for a hunting gun, around here. Never hunted grouse, but if they'll stick around for more than 8.... I'd definitely gear up for them!

Eventually, I'll build something so hungry it needs an affixed tank. Maybe this winter...

Tanks for fulfilling my query.   

I've been trying to wrap my head around the OEM Chinese springs and their compression rate efficiency  and ES.  I had a set main spring in one of my 60s, the set was arched, which Mike sent me two more with my 3rd 60 purchase (after all the 60s are experimental and a big thanks to Mike).  But I was wondering if custom springs would tighten up the ES along with eliminating as much friction as possible in the chain of moving parts (stalwart's Teflon coated striker).  Can anyone, Bob  , please satisfy my curiosity again?? 

[moorepower]

There are those who are trying to figure that out.  

[rsterne]

A spring guide may help.... I don't know if you will find any more consistency with a spring change, however....

Bob

[RMM]

There are those who are trying to figure that out.

A spring guide may help.... I don't know if you will find any more consistency with a spring change, however....

Bob

This is a good thing because it shows I'm not the only one thinking about springs.   

[stalwart]

Frankly, I'm surprised some enterprising fella hasn't made up a high quality spring and screw kit. Some homework, and a couple hundred bucks... and you'd be in bidness.

If someone hasn't done this by the time I get through R&D here... I will. There are RC guys who pay for a lot of bad habits, and save folks a lot of time, doing just that.

[RHytonen]

Mike, I do have periodic episodes of unconsciousness that interfere significantly with my work. It's a bad habit I'm trying to break... with zero success. 

Yarp, brew it up! I'm always ready for more.

 

I swear by grinding beans daily just before brewing, and have a regular Amazon order of
5lb every 2 months of dark roast Celebes Kalossi beans - best in the world- about $45-$50.
(= 6 cents a cup - take THAT, Starbuck's!)

[RHytonen]

All repeaters will be shipped with these 2 upgrades, from now on. Slip coated strikers have proven their worth.

SWEET!
-you've got mail...

-Rod

[RMM]

Frankly, I'm surprised some enterprising fella hasn't made up a high quality spring and screw kit. Some homework, and a couple hundred bucks... and you'd be in bidness.

If someone hasn't done this by the time I get through R&D here... I will. There are RC guys who pay for a lot of bad habits, and save folks a lot of time, doing just that.

Your a good man Eric.  Thanks for springing on the wants of others.   

[stalwart]

Your a good man Eric.  Thanks for springing on the wants of others.   

Arrrgh....     Cornball.

 

Been playing around with strikers, and got a few mm of extra stroke without cutting into the receiver... and about double the weight. Really smacks home, hard.

[rsterne]

Excellent news.... keep up the good work !!!.... We'll need all we can get, eventually, at 3000 psi....

Bob