The number to qualify as a CRL would depend on the cartridges. You could own 8 rifles in .223 Remington, .243 Winchester, .270 Winchester, 7mm Remington Magnum, .308 Winchester, .30-06 Springfield and .300 Winchester Magnum and just be an ORL (Ordinary Rifle Loony).
But if you own 4 rifles in .22 K-Hornet, .300 H&H, .348 WCF and .450/.400 3" you're definitely a CRL!
Does having an array of Savage 99s in 220 Swift, 25 Souper, 25-284, 260, 6.5-284, 338-284, and 40-55 get me a CRL or ORL badge?
Surely having 15 Winchester/USRA 70s in 25 WSSM is at least irregular loony territory.