Double Tap 200 grain hard casts

[Species]

Radiotom - can you measure what the COAL is on those factory loads?  Trying to dial in my reloads with those bullets and as you know at 1.250" they don't feed 50% of the time.

[The_Shadow]

I have measured the Double Tap WNFP Hard Cast stuff and he has reduced the COAL to 1.4200" to allow the wide Nose to tip up and into the chambers...

[Species]

At those measurements they are quite small and would explain the leading.   

I have shot about 100 through my KKM barrel and 50 through my OEM barrel and have not noticed any significant amounts of leading.......I have had a hard time getting them to feed, but they have been extremely accurate and no key holing whatsoever in either barrel.  YMMV.

[The_Shadow]

The last one I pulled-down and documented was C.O.A.L.: 1.2450"

[Species]

I have measured the Double Tap WNFP Hard Cast stuff and he has reduced the COAL to 1.4200" to allow the wide Nose to tip up and into the chambers...

I am assuming you meant 1.240"...... 

[Species]

just out of curiosity, do the factory loads have the case mouth covering up the canelure?  when I load them to 1.250 (I know that is too long now), the canelure is not covered at all.  I guess that is why DT is putting the canelure where it is......

[The_Shadow]

Those cast bullets were originally designed for the 38-40 cartridge for revolvers and rifles, that's why they have the cannelure.
The case does cove the cannelure as seated...
http://10mm-firearms.com/factory-10mm-ammo-pull-downs/double-tap-200gr-wide-flat-nose-hard-cast-gas-checked/

In the 230 gr you can see the case didn't quite cover the cannelure as loaded at 1.2555".
http://10mm-firearms.com/factory-10mm-ammo-pull-downs/double-tap-230gr-hard-cast-pull-dowm/