I shoot two of them. Had one built 9-10 years ago and bought one of the Howa barreled actions a few years ago. I don’t know how to answer your question about it being better than a 243. I don’t think a 243 is better but can’t say this is better either. A few of the pros as I see them.
Factory rifles are twisted fast enough for longer bullets. Not always the case with the 243.
Factory ammo is available with 105’s and 108’s. Also seems to be available and one of the more affordable offerings.
The shorter case can aid with over all length issues should that matter.
For a handloader or using a custom barrel most of the advantages are a wash but doesn’t hurt anything.
