Mech Tech 10mm Carbine Reloading Results

[kmartinez1040]

I doubt I'd go to 700X, but Power Pistol has some great applications.

I have to wonder why you are seeing the separation issues, when other have run the Underwood and Double Tap ammo thru theirs.  Can you contact MagTech to explain your situation or ask if there is a way to delay the ejection cycle?  Could the recoil setup be for a 40S&W rather than a 10mm?  Wrong spring? or detent for lock up?  I am not that familiar with the design and how they control the timing of the ejection.

Best of luck getting things worked out...

I have been in contact with Mech Tech a few times. They are stumped as nobody else has reported problems. I thought about the spring, but I understand it has little affect. Here is a link to explain:

http://www.orions-hammer.com/blowback/

We will see once I check the headspace.

[kmartinez1040]

Well today I received some 10mm Magnum Brass from Starline.  I trimmed one to the maximum headspace dimension from the SAAMI specs which is 1.004".  The second was gradually trimmed until it would chamber and fire in the Mech Tech.  That dimension turned out to be 1.018".  I believe this indicates that the headspace for my particular CCU is excessive. 

I tried both cases in my stock Glock 20.  The case at max SAAMI specs did chamber and fire, while the longer case would not.  What other conclusions am I to draw?