Matt,
Great to hear that you called Hodgdon and got the information. Glad to see you researched the load before hand.

I am also glad to hear they said 40% so that puts you in the safe area with 27 grs. I was guessing because the normal figure I see of 75% of Max and your load was borderline at 27grs. Most of these accidents with SEE you hear about are with straight wall case like 38 &357 and 45-70. They are not pretty.
I heard of a guy last year in California that worked for Firearms Company that had a range on their facility. At lunch he went to range and did not show back up that afternoon. Later they found him at range with the bolt out of his gun lodged in his head after explosion. They suspected this was a SEE explosion.
Good luck with the reduced loads. I know they are pleasant to shoot. You might also look at chuckhawks site listed above for his listing of reduced loads from published IMR and Hodgdon data. Hodgdon has redone their web site and they’re listing of youth loads do not show up any more? My guess is lawyer liability reasons.