I have been reloading for 45acp for my 1911 for a while. However, I never really got into reloading for rifles. I have just recieved a set of dies for my 303 SMLE as an early birthday present. With my 45 I never had to worry about case trimming. Is this something that needs to be done with every reload or can I wait awhile before investing in a trimmer. If I need one right away what are some good low cost ones? The Mrs. says my shooting budget is limited to my VA disability checks ONLY.