Keep in mind a 223 Rem Match (.068"FB 1.5*throat)is a different design than a 5.56 CLE(.025" FB) and is different from a Rem 223(.025" FB 3* throat) and different from a 223 Wylde(.062"FB).
ETA if Frank White(CLE) makes a "223 Match" different from his 5.56 CLE or 223 Rem Match I have not seen the design specs. Between Manson, Clymer, JGS and PTG there are probably over a hundred custom 223/5.56 chambers on file, I had 2 myself.
Last edited by constructor; 11-10-22 at 10:28.
All those different freebore dimensions makes it difficult to use a shared load recipe that is known to shoot well in a rifle with a different chamber. I could not come up with a good reload that would shoot well in the CLE match barrel, so I copied the barrel and load other people were using successfully.
I don't have the equipment to precisely measure the differences in match chambers, so I have to rely on collected reload data and down range scores. This thread has been an education.
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