Stock Questions mainly Accuracy International

this question should be moved to the equipment section.

anyway, each of the three you mention will fit the cartridge or other cartridges for which the 223, 308 and 300 are the respective parent case. example- 308 chassis will accommodate 243, 260, 6.5 creed, 7-08, etc.

if you do not understand the above- get started reading here on the hide. there is a wealth of information.
 
Thank you for the input. I also came to a similar conclusion. Think i am scrapping that boat and going a different direction.

Think I will be heading the .308 usual starter then moving the the 6.5 after i get range time and good shooting habits.