That is my case. Here is the case from mycasebuilder
https://mycasebuilder.com/cases-by-brand/custom-foam-mycasebuilder-cases/j-250-custom-foam-case/
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The original case design was done by Greg
@gkitt80 and fits 1000 chips plus cards & DB's. I bought the first one second hand from Greg and then had a second one made. Each barrel is separate, no racks involved. The J250 is way bigger than the Apache cases 3800 & 4800 though.
My standard 800 chip layout using an Apache 3800 is below. It stacks 2 levels of standard racks and has space for a setup & DB's. I think you'd be hard pressed to fit 900 chips in the 3800 especially if over half were 43mm, you might could do it but it would be really tight (need a little tetris to figure out the puzzle). You would need to probably go with the 4800 to fit that.
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Be aware the mycasebuilder prices have gone up substantially in the last couple of years. Unless you are planning on using the PnP foam included with the Apache case instead of the custom hard cell foam (recomended), you will be paying up.