I ran a 36" .338LM Improved in my Covert for years
These days that chassis is dedicated to 16.5 - 20 inch barrels, of which a 16.5" 6.5x47L is a really damned good setup, especially suppressed. My only headache is that even with a 5-25x Ultra Short on it, I struggle to fit even my shortest clip-on for night shooting.
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The UNS-A3 is the only one that comes close (ClipNV-LR is a bit sketchy and PVS-27 is a no go), but it's really no good past 10x magnification.
Edit: serious First World Problems, I know.