Gun Hard Case

Plano All Weather - they have 3 lengths and probably fit your budget. I have one and it’s a tank. This is the 42” 



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Hard to argue with those Planos. You can get the very similar case from Harbour Freight when they have the coupons, but the price isn't much different from the Plano linked above. They seem to be the two most popular ones I see people purchase and are happy with.

Now, you asked for a hard case, so after answering that portion, I will also add this. You may be set on a hard case, and I understand. I personally purchased a heavy duty soft, double rifle bag, and I use it, as it is a little more versatile. I purchased it when I had a Red Wolf HP, so it is way too long for my Impact, Uragan, or Pulsar, but it can easily hold a couple rifles and plenty of gear. It is pretty heavy duty and protects the rifles well. I never had a single POI shift using it for my Impact. 

This is the one I have. 

https://www.amazon.com/Savior-Equipment-Warfare-Tactical-Backpack/dp/B07QLB7K15/ref=sr_1_4?crid=1MC6CJRAX5EHR&dchild=1&keywords=saviour+gun+case&qid=1588256801&sprefix=saviour+%2Caps%2C499&sr=8-4