In my CCW classes I see probably 2 dozen J-frame shooters a year and every one of them struggles to certify with it on a ridiculously large target (12" x 18" target @ 7Y) usually using puffball Winchester white box FMJ.
The only way most can qualify with a J is via cocking and shooting single action between every shot.
When I hand them the G42 they drill the center out.