https://mrlock.com/brand-index/american-lock/padlocks-by-american-lock/1100-series/
https://www.amazon.com/ABUS-80TI-50-Titalium-Aluminum/dp/B00G7P3FYA
Both good practice locks to move on to.
Abus Titalium 80Ti/50. 12 Bucks on Amazon.
https://www.amazon.com/ABUS-80TI-50-Titalium-Aluminum/dp/B00G7P3FYA/
Or if you want really good one in that range, Abus has their big bad boy 90/50 Titalium for like 48 bucks on Amazon.
https://www.amazon.com/90-50-Titalium-Stainless-Shackle/dp/B009S5YBUS/
I would drop the tubular and focus on pin tumblers. TheAbus 80ti/50 i find a great deal. The loto is a decent choice as well. Or the abus 72/40. All great deals on Amazon and will get you comforable for your green belt.
If you felt pretty comfortable with that Orange Belt Abus, maybe you should try a $12 green belt: Abus Titalium 80Ti. I have a couple of these and they are enjoyable picks.
Kinda depends on your goals though. I feel like I've been recommending this way too much lately, but a Sparrows Revolver would probably be an incredible training lock right now for getting incrementally better at security pins. If you master the Revolver with a difficult pin load out, it would be easy to graduate to the blue American 1100s.
That's curious. I have never purchased one of those.
I use about 4 of these in rotation.
Buy a pelican case. Just put up the damn $50 for a case large enough for your gun and a couple other items, and then get high quality lock (NOT MASTER LOCK) like an Abus Titalium (virtually unpickable).
It makes flying with a gun so much better. You only need the one lock on the smaller Pelicans.
Factory gun cases are garbage, a Pelican with a dessicant packet in it will keep your gun totally sealed from the elements.
https://www.amazon.com/ABUS-80TI-50-KD-Titalium/dp/B00G7P3FYA
You're in those two for under $50 total.