That is an interesting idea. The air rifle guys do just that with pellets. You can buy a combination packet that has all the pellets made in seperate boxes so you can determine which one works the best in your rifle.
ORIGINAL: yeoman
Sabotloader, I've heard of the Crushed Rib. How do you go about ordering the correct sabot? Wouldn't it be great if you could get a "variety pack" and try them out. I have a full box of .451 pistol rounds and the standard green sabots are a real pain to load.