Factory has a hard time fitting their rifle to primer, because primer brand have different length. TC normally fit their head space to the longest primer, which is the W209. Hence all other brand will be too short for a perfect 'seal', and there will be blow by. Two of my Omega give a slight 'crush' to W209 primer, when the action is closed. CVA rifles are usually loose for all primer. Adjusting the firing pin bushing out is not really a band -aid, but rather a permanent fix, if done correctly.
Another way i have fit primer to my rifle is by making a breech plug to fit my rifle, and my primer choice. This works good. I have also modified OEM breech plug so they can only be used with one primer length, the one i choose.