I have always wondered why T/Cs 375JDJ barrel is always listed for use with the G2. I think it was to sell more frames. I agree that the G2 is stronger, but the 375JDJ was developed and shot for years in the older style frames. I think I remember reading that JD Jones tested all of the various Contender rounds he develped on the same frame, proving that the pressures of the rounds could be handled by the Contender.