The bolt does not close on an empty case. The case rim as well as dummies are contacting the barrel face as did loaded rounds of two different OALs yesterday. With rifle on a stand in bright light I can see the bolt face initially stops about 3/32" (<1/8 but > 1/16) from the case about the same as with 407052 and then dropping the bolt handle about 1/4" as the lug begins to cam the bolt face forward it is contacting the case and stops there.   

The same case inserted  in 407052 is about even with the receiver back edge and with this rifle it is set in about 1/16" from back of receiver edge which is the only difference I can see.

There has been debate on whether Criterion barrels are short chambered or not. On this one the case appears to enter the chamber completely so would that not happen with a short chamber?