Hard to say but I'd probably say yes, unless you are really pushing your foot into the end. Length may not be the issue here, but actually the width, as if the vamp isn't tight enough on your foot then width is probably the factor. Sizing is very hard to get right, as many times a 10C will be the almost the same length as a 9E just narrower etc.
In the time when I started to expand my shoe collection but was still growing in my late teens to early twenties it took a few years of experimentation in different makers to fully determine my actual size in most of them, especially the width as not many manufacturers stock different widths to try on so easily. It was finally discovered in GJ Cleverley, who are keen on narrower lasts, my true size afterall and what had been the problem was actually the width of my shoes not the length. So the lesson is to examine all aspects of fit not just the length.
A good indicator for whether your shoes are too big in length would be wear on the back of your socks as that would be evidence of heel slippage.
Edited by Ich_Dien - 1/17/14 at 9:36pm