I want to buy some good match ammo for now, save the brass and reload later. I was planning on buying 140gr. SMK for reloading. Will the ELD bullets work better in this setup? I'm not looking for single hole accuracy- just a good low-hassle target load I can reload myself if/when ammo gets tight again.The OP appears to me to be asking about factory ammo made for the 6.5 Creedmoor--that's what I based my recommendation on.
I've built several Creedmoor AR's; in general--for modern high SD/BC bullets--the distance for the BO ogive to engage the lands goes significantly past the typical 2.8" you'll find on factory ammo and magazines. I just did a random sampling of good 6.5 bullets and they all engage the lands at 2.85 or more--mostly more-- in one of my 6.5 Creedmoor ARs. But the Creedmoor is one of those cartridges that "jumps well" in an AR, though you may have to search around for the ideal COL. I've found that Hornady's ELD bullets generally work very well even with long jumps to lands in the many different cartridges I've used them in when making hand-loads.