20" Craddock RTR 1:7"
29.5gr CFE223 75 ELDM @ 2.240 = 2950fps
.6" for 5rds, .6" for 5rds, .74" for 5rds, .63" for 5rds, and .76" for 5rds. Two groups would've been .42" and .34" except for first and last round fliers. This load shot 3030 ft per second at about 1.5" in a 22" Baldwin gun works 22 Grendel barrel.
26gr 8208, 75 ELDM @ 2.280 = 2899fps
most accurate at .37" for 5rds
26.5gr 8208, 75 ELDM @ 2.280 = 2950fps
.46" for 5rds
27gr 8208, 75 ELDM @ 2.280 = 2999fps
least accurate at .74" for 5rds and showing pressure
Used my old 22 Grendel brass and just ran it through the new Lee 22 ARC dies. I still had 60 rounds of 22 Grendel(CFE load) loaded up. I shot 30rds of it to help get zeroed, set the gas block, and run some rounds through thru the barrel before testing the 8208 loads. Everything functions fine but headspace on the 22G brass and ammo was 1.174 and fired brass from the Craddock 22ARC is 1.181. Same BCG and rifle parts; just pulled the 22G barrel and replaced with the 22A barrel. Used the Hornady headspace comparator and .400" insert to measure the shoulders. I'm looking forward to trying some TAC and maybe even some StaBall 6.5.
Hoping I can get sub .5" consistently at 3000fps plus once the barrel speeds up and brass is sized correctly. Hopefully TAC can get me there. If it doesn't work out, I at least have 8208 at mid 2900s was excellent accuracy.