Interesting comment on the 187s. I thought they were all screw caps, but haven't really looked into them. And have never filled any.
Here's my take on the corking process. The cork starts out a specific size (if I recall rightly #7 is 21mm, #8 is 22mm, and #9 is 23 or 24 mm). The corker compresses the cork to fit in a bottle, either by squeezing in jaws or pushing thru a tapered sleeve. I think that all sizes of cork would be compressed to the same small diameter. So either the cork fits the bottle at that small diameter or it doesn't. Then the cork starts to swell back out, it's memory wanting to return to it's original size, but the bottle stops it. From this view, any size cork can go in any corkable bottle.
Two provisos to that...
1) different corkers may compress the cork more or less.
2) a larger cork in a smaller necked bottle may cause the neck to crack when it expands.
Bottom line for me. I use #9s with a floor corker. But I only use 375ml, 750ml, and 1.5 litre bottles. Haven't had any problems.