I am not trying to be an ass....but you can't jam a square pick into a round hole.
I think most people have said it - you can bring a bolt gun, but it is NOT going to work too well at all. If you want to show up with a Tikka, you will have to accept that it is going to suck for you. The proper rifle for this is an AR15 with 10 mags.
Yes, you can wear tennis shoes to go for a marathron run - but when your feet hurts at the end of the day don't blame it on the run itself !!! The problem would be that you have chosen to show up in tennis shoes.
If you shoot the ORA SR event, you will be running, kneeling, standing and switching positions in the middle of the match. You will have to change magazines in the middle of the serial - this is not a "belly" shooting event that wins by shooting groups. It is a competition of position shooting.
If you want to shoot bolt guns lying down on the grass with minimum movements, the precision event (run by ORA) is probably more matching to your interest The precision event is more of a belly shooting event.