I've tried everything known to mankind in my 7lrm. The only thing it will shoot is Bergers(180 Hybrid or 175 Elite hunter) and H1000. Not even the 175 ELD-X that it was supposed to shoot well when Gunwerks sent the gun to me. Tried 23, 26, 7977, retumbo, 33. None of it works. Probably why the couldn't supply me with the 3 boxes of factory ammo I ordered when I ordered the gun. Would have been hard to disprove how bad it shot if they sent me their ammo. Spent 10K on a gun and they told me they weren't loading 175 eldx ammo yet for 7lrm. Seems to me someone should have called me and told me they couldn't get the eldx's to shoot in it. Instead they blamed my reloading. Garrett Wall told me to try 180 hybrid. Wow, all the sudden my reloading got really good. Not the experience I was wanting when I decided to order a Gunwerks Gun. Huge disappointment!!