Terrible idea, it's all about pressure. Small pistol primers are -NOT- proper for containing 60k PSI and beyond. Even .30
Carbine (40k max) and .327 Federal (45k max) use small rifer primers and never small pistol.
The pistol primer has a thinner cup and pressure does absolutely everything it possibly can to try and find a failure point to escape. When you successfully and properly contain it, the pressure escapes from the muzzle (and gas port) where it is supposed to. Don't give that pressure a thin primer to attack and attempt to compromise.
As far as I am concerned, if it is a proper jacketed bullet .223/5.56 load, a pistol primer is careless and dangerous.
I like to swap brass... and I'm looking for .32 H&R Mag, .327 Fed Mag, .380 Auto and 10mm. If you have some and would like to swap for something else, send me a note!