I finally dialed in the 88 ELD with my latest hand loads. Until now the factory Hornady 88 ELD has out-shot what I was doing in the reloading room. I noticed that the factory loads are very light, to the point that the action cycles very mildly. I backed my loads down a bit and loaded them closer to the factory 2.260″ OAL, with my loads coming in now at 2.270″.
The secret sauce is 26.5 grains of Winchester 760 powder, Starline brass, and Winchester small rifle primers. I didn’t measure muzzle velocity but the loads still seamed hotter than factory, so I’m guessing 2650 fps from the 22″ barrel (factory shot 2650 fps from my 24″ barrel.)
I was able to shoot two 1 MOA groups, one with 9 shots and the other with 7, at 100 yards. I need to fine-tune this load now and then stretch its legs, but I expect good things given how the factory loads shot at 1000 yards last year from the 24″ barrel.
The group below is pretty satisfying at this point. Notice how you could combine those shots in different ways to get several sub-moa 5-shot groups. Never trust low round counts. I plan to refine this load a bit more, probably just drop to 26.4 grains and see how it shoots. I’ll put up a 20+ round group to see what we get.
That lower is not going to work, only for pistol calibers. Our upper assemblies are compatible with any mil-spec AR-15 lower that is compatible with .223 Rem.
That lower is NOT compatible with any centerfire rifle caliber upper assemblies. It’s strictly for pistol calibers, probably only for 9mm.
You can use a 6.8 SPC barrel with any mil-spec upper receivers, but the lower must be for standard AR-15 centerfire rifle calibers including the .223 Rem / 5.56 NATO.
Hi, I am new here but, I have some tech questions about the 6.8mm SPC setup. I want to change over from .223/5.56 to 6.8mm. But, will your upper mount on my Armalite Lower or KE Arms KE-9 AR-15 Stripped Lower Receiver 9mm Luger Accepts GLOCK Magazines Billet Aluminum Matte Black???
https://www.cheaperthandirt.com/ke-arms-ke-9-ar-15-stripped-lower-receiver-9mm-luger-accepts-glock-magazines-billet-aluminum-matte-black/FC-2-KEA1-50-01-062.html
Or will JUST the 6.8mm barrel mount to the XTS AR-15 Complete Mil-Spec Upper Receiver Black
https://www.cheaperthandirt.com/xts-ar-15-complete-mil-spec-upper-receiver-black/FC-767820084428.html
I just don’t want to buy something that will not work. I can rebuild any ar-15 but, I am smart enough to know to ask someone who does know, something gI is not sure about. Thank you. I know this is not the same discussion you were having.