I have read that many form 9.3x62 form 35 whelen or 30-06. I know that the case head/base diameter of the 9.3 is larger than the -06 I read an article a while ago that stated the minimum chamber diameter for the 9.3 is .4776" and the 06 or whelen run .464 to .466"
This would indicate a .012 to .014 expansion - in a minimum chamber. The article goes on to state. 'any time case expansion above the web approaches wall thickness, case failure becomes almost certain.' with some caveats re:brass hardness, number of loadings etc.
I am an enthusiastic handloader but no expert. The above makes sense, but can anyone shed some light? I am sure many have used -06 brass witout problem (I know two) . I have ordered lapua brass as I don't want the niggle in the back of my mind and ,well, lapua is excellent brass.