I am looking into purchasing my next gun. I will likely get one in 40 S&W or 45acp(leaning to a P90DC if I can find one). I have a lot of 40 brass and 45 mostly small pistol(I have separated sp and lp). My question mainly is what are the pros and cons of 45 with small pistol primers? And I will be reloading for what ever I buy. Also any recommendations are welcome on the gun and/or caliber. Thank you