Grendel Bolt Action loads

[JASmith]

...Extracted easily, was slightly bulged at the web, CCI BR4 primer flattened slightly and showing machine marks from bolt face.

It looks like three pressure indicators were observed. Two of them would suggest that the load is OK for the rifle and case.

The bulged case, however, should evoke further checking.

• If so, was the bulge actually just above the web? In other words, more than 4.15 mm (.163 in) above the base?
  
• Safest bet to get the actual location is to use a drill rod or other suitable measuring probe to get the actual length from the mouth to the top of the base.
  

A bulge just above the web that does not get bigger with subsequent shots likely reflects the true chamber diameter at that point.

A visible bulge at the web could be an indicator of significant pressure unless your eyes can pick up a gentle bulge of less than a few thousandths of an inch.