Solid Or Removable
Solid pilot reamers are designed to fit into the lands of the tightest barrel that you might encounter. That will leave it quite loose in a barrel that has a different, (larger) bore diameter.
Example. I have seen certain 6mm match barrels that are as small as .2362 in the land diameter, and others that are as large as .2374. That is .0012 difference. Logic dictates that a generic solid pilot reamer that will fit into a .2362 bore will be entirely too loose in the larger barrel.
So, I guess it gets down to what level of precision you are looking for. Read these Forums on Benchrest.com for very long, and you will see that we get anal about anything over .0003, much less .001+.
Go with a removable pilot. If you plan on chambering barrels with any degree of precision using the conventional methods, (ie, floating holder), it is difficult to arrive at good results unless you use a removable pilot that you can custom fit the bushings with.
The removable pilot simply gives you many more options. The only draw back as I see, is the initial cost is a bit more............jackie
