6.5 creedmoor necked up to .338 lapua wildcat cartridge in a ar10

[grprecon]

basically what it says in the title
has it been done before
with a hornady .338 lapua cal sst interlock 200 gr./ with .445 bc/ with a .244 sec. den reload myself, what do you think the accuracy, range and stopping power for big game hunting past 800yrds would it be capable in a 22" barreled ar10

[Jim Watson]

About like a .338 Federal.

At 800 yards on game? Not me, that is about triple my confident hunting range.

[Zak Smith]

basically what it says in the title
has it been done before
with a hornady .338 lapua cal sst interlock 200 gr./ with .445 bc/ with a .244 sec. den reload myself, what do you think the accuracy, range and stopping power for big game hunting past 800yrds would it be capable in a 22" barreled ar10

A .308 sized case will not have enough powder capacity to shoot the high BC bullets that you want for long-range shooting at a reasonable velocity to make those kind of hits.

The .308 case size has a ballistic sweet spot in terms of BC/velocity in 6.5mm caliber, in the .260 or 6.5CM.