The 29/629 can shoot any SAAMI rated bullet of any weight without any problem.
Enter the Ruger/TC only loads and you've got problems.
I've been shooting 265g cast from the Lyman 429244 in my 29's and 629's at 1200fps for over 25 years and they aren't even loose yet. 2 are pre endurance and the others aren't.
Keep it to a dull roar with SAAMI approved pressures and you've got no worries.
Methinks your friend doth protest too much.
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