O3 and 03-A3 the same. The 03-A3 that I have ejects positively straight out to 1 o'clock. I don't know if this is relevant to the AR types
Bolt action ejection is totally irrelevant to AR types and semis in general.
The AR uses a spring loaded plunger ejector. Constant pressure is applied to the case as long as the extractor is holding it in position. Where the brass lands depends on how fast the bolt is moving when the empty clears the edge of the ejection port, and what the case hits, or what hits it on its way out.
You can easily see this by carefully chambering a fired case (making sure the extractor is engaged normally, rifle full locked shut) and then ejecting the case by hand, As fast as you can do it by hand, its still lots slower than what happens during firing, and the empties will wind up in a different place.
There are gun designs where hotter loads get the brass tossed more forward, due to the difference in the action's operating speed. This seems to be more common in systems that use a fixed ejector, but might happen for other reasons. Sometimes a gun that opens faster can shut faster, and if the stars line up just right, the closing bolt/slide could hit the ejecting case, giving it a different than normal landing location.
It is also possible for a light load to open the gun "slower" and the spring will shut it at normal speed, creating the same situation.
I have a pistol that with regular factory loads never throws the brass forward, but with hot handloads does it with regularity.
I don't see any problem recovering your fired brass on an indoor range, other than the range managements policies. Some ranges are very possessive of fired brass, considering it "theirs" as soon as it hits the ground. I will not patronize such an establishment!
There should be no issues with allowing you to police up your own brass, ONCE THE RANGE IS CLOSED/COLD. We do it all the time on outdoor ranges when the range goes cold to allow for putting up & changing targets.
Now, asking the range to order a cease fire so you, and only you can collect your brass is rude to other shooters, just be patient, and polite. A range that will not allow you to collect your brass during a cease fire period is just being rude to YOU, and you should go somewhere else, or work on getting the management to change the policy. Good Luck.