All this headspace information

[Bindi2]

My questions are.
1 when the case grip in the chamber has been removed [ lubed case] the case life extended [10 failure to 35 and ongoing] what life expectancy does the bolt lugs now have as they are carrying all the load not sharing it with the case.
2 Is case life more important than a non replaceable part. Cases are a consumable.
3 The dimensions of a battle rifle are and will allways be different to a commercial one the 303 is probably the worst offender, can not that be accepted.