I have tried to get this rule changed to conform with RBA rules but the TRA Technical committee has deemed it is still appropriate for TRA Benchrest standard 200/600 type shooting.
Please familiarise yourself with it, especially if you are going to a big event/trip like the TRA Nationals where a DQ will be costly and heart-breaking. So i am just making everyone fully aware of this rule that has been around for many years but was policed at last years Nationals for the 1st time. Please note this does not apply to RBA rear bag rules that are far less stringent.
Page 14 of the rules below covers it, I plan to take a standard small ear bag with me to these events at all times.