I never have any problem getting Winchester primers, I usually have a little difficulty getting Fed 210 Match, but always end up with some. I can never find CCI 450 SR primers, and I have completely stopped trying to find CCI 200 #34.
Just ordered CCI 450 SR from Wholesale Sports (no indication they weren't in stock at least but time will tell :-/ ) Is #34 military?
With wholesale it usually takes 2 weeks for me to recieve the notice saying my item is back-ordered and it will be 2 months before I get it.