I have the
Apache 9800 from Harbor Freight. It's 55" long and you can probably score one for just over $100 with one of those "rare" coupon Harbor Freight distributes...
I just flew with it to Alaska. Here are some suggestions (some of these were given to me by friends who fly often with rifles, too):
1. Take all of the foam out and pack the rifle with gear to 50lbs. I put it in a soft case with my down pants under it and down jacket over it. Around it I packed my ammo (hand loads in a hard plastic case), bino (in a hard case), clothes, and the random items.
2. The Apache only takes two locks. The shackles need to be 7/8" long to not be able to be pryed open. I bought
these on Amazon and they worked great. The rifle case snaps were open when I landed and it looked like TSA had tried to check and see if the locks were effective and case could not be pried open. Everything was inside and those locks will not allow the case to pry. I had longer shackles on there before ordering these (1-1.5") and it could be cracked just a little more than I liked.
3. I put an AirTag in the case. There's some back and forth on whether or not you should/shouldn't/how useful it is to do this, but it saved me some time on the way to AK. I could see my rifle was sitting in baggage claim as we were on the tarmac of the runway. I called the AK Airlines in my departing city as soon as I landed in the connecting city. I described the case, where it was, (had my name on it), etc. They had it on the next flight out directly to my destination city.
I'm sure it would've showed up eventually, but calling definitely served as a catalyst and had my rifle show up only a few hours after me...which was great as we were headed into the field soon.
Hope this helps!
Edit: The Apache has wheels and I would definitely +1 on
@wyosteve comment. The wheels are really nice when you have several things with you.