One of my accurate .243W loads uses Norma brass, Hornady ELD-X 90 gn, Federal 210 Primer, AR2209 43.80 gn for 3250 fps from a 1:9 twist, 22 inch barrel
I thought it a hot load but repeated firing of the same brass ( maybe up to 5 X ) has not shown indications ( yet ) of overpressure. So, I think I'm good. I think a tendency sometimes with AR2209 is to render higher velocity with slightly less than max charges and without excessive pressure. I have found AR2213sc ( in other cals ) is the same.
In any case your intended course of action is what I would do. Keep shooting and loading the same brass for a while and see what the brass tells you. My guess is you'll be fine.
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