Does your 10mm run reliably with 200gr cast?

[tominboise]

I have a G20sf. I have shot a few hundred of the Montana Bullet Works 200gr Gas Check bullets through it. Using Blue Dot powder. I originally worked up a load in the OEM barrel, which worked fine and shot well. Then I put a Lone Wolf barrel in it. The same load shoots fine in the LW barrel. Neither barrel has had any issues with jamming. I do run a 22lb recoil spring assembly.

 

[Lennyjoe]

Hey guys, would you be so kind to measure and share the COAL of these two Underwood loads? It may assist me with my loads (the Underwood site does not list COAL).

Sparkyv, will do in am.

 

[Lennyjoe]

Hey guys, would you be so kind to measure and share the COAL of these two Underwood loads? It may assist me with my loads (the Underwood site does not list COAL).

 

[sparkyv]

Cool! Looks like I'm on the right track for my 195 gr WFN COAL! Thanks for measuring, Lennyjoe.

I'm still tweaking the COAL to improve the reliability. Yesterday, my most recent load was 1.239". I think I'm getting close.

View attachment 1147651
View attachment 1147652

 

[Lennyjoe]

Cool! Looks like I'm on the right track for my 195 gr WFN COAL! Thanks for measuring, Lennyjoe.

Happy to help