I know I'm not he brightest bulb in the box when it comes to reloading as I have been at it for only two years. However, I picked up a brick of lage pistol primers from Winchester at Sportsmans Warehouse last week and it said they were for both regular and magnum cartridges. Can this be so? I know the diameter is the same but aren't the properties of magnum primers different? If it is true that you can use them for either can I use the magnum primes I bought by mistake when I first started loading in my 45acp or colt rounds?