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I'm going to piggyback on this thread and ask a related question instead of opening a new thread if y'all don't mind.

I'm getting ready to order a block. It looks like most sleeves can go 4.500 to 4.530 max. How small a bore can a 4.500 max sleeve come with? Can I get a 4.44 bore, then go 4.470 then go 4.500? Does it make sense to do this?

I'm not sure on that one. I'd give Ken a call and ask him.
On most of combo's we do we start at 4.500, then if need be you can go 4.505, 4.510, 4.530, 4.535, etc. up to 4.560
it's all about the application and ring sets available.
For what they cost I'd like to get as much life as I can before I have to buy 8 more sleeves.

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