strange possibly over pressure sign

Or even better, the complete drawings of all the parts.

I have been using the "universal equation" for protrusion.

P=0.5*D+0.01"

where D is the pin diameter.

The actual spec may deviate slightly. 0.04" for AR-15, and 0.05" for AR-10.

-TL

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well i got around to taking the ar-10 apart and measuring pin protrusion, and checking for slack in the pin / hole fit. nothing out of the normal, and all within specs.

i think the powder was hot, (110F) that would raise the pressure a bit, but still a safe load. and the primer cups are thin. that's what i think it is. when i can find some cci-200's for sale i'll continue with that load development. thanks to one and all, for the input.
 
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