I have been loading for 223 with federal brass which are 1.750 in. in length after a full length size. Now I am running low on federal and will be using some lake city which are 1.760 in length after full length size. My question is does this make any difference in accuracy in terms of space for the powder or set depth of the bullet? I have a trimmer if the difference is crucial enough to mandate trimming. I have half inch 5 shot groups now and really dont want to screw that up due to brass that isn't uniform in length. Thanks in advance.