I have a Ruger LCR which holds five rounds and a Smith that holds six in 357/38. I plan on buying some Tuff QuickStrips. Is there any reason not to buy strips that hold 7 or eight rounds instead of 5 or 6? More ammo or more empty space on the strip to flex in the process of loading. Or is the spacing off for reloading? Stay with 5/5 and 6/6?