Really considering one but 457's are scarce, 455's not so much. I know there are a couple of differences.
Functionally and accuracy-wise, is there a downside to going with the 455? It looks like it may be a while before the 457's become readily available.
Functionally and accuracy-wise, is there a downside to going with the 455? It looks like it may be a while before the 457's become readily available.