I had a suspicion, so I went looking for a good drawing of the 311-410 (Hat tip to Longbow).
Compared it to the #59 drawing, the meplats appear to be the same at 0.150
and that was a surprise to me.
The pin on #59 is slightly narrower, 0.105 as opposed to 0.115 for the 311-410.
So the question is, with sizes so similar, are we going to have the same
tip deformation problem as was had on the original?
And checking ALL the pictures,
the Post #59 TL GC HP has a meplat of 0.150,
the Post #69 LG GC has a meplat of only 0.145!
It looks to be a problem....
.