Rechamber 7x57r to 7x65r
Is it possible to rechamber a 7x57r to 7x65r? I understand the 7x65r operates at higher pressure. Reason I ask is my 1962 vintage JP Sauer drilling 12 ga. X 7x57r chamber has neck erosion problems. Previous owner must have routinely fired cartridges with split necks or brittle brass that split on firing, causing the neck of the chamber to become damaged. I'm able to prevent my cases from splitting by annealing the case mouth every other loading. I would only fire reduced pressure loads if rechambering is possible. Thanks in advance.