1. number of fouling shots if any - No specific fowling shots, most groups are in the middle of a range session
2. coating used, how applied; time and temperature of cure - HF Red Powder Coat, Tumble Lubed, 15 Minute bake after reaching 350 degrees.
3. Bullet used, alloy, and sized dia. - any culling criteria used (eg bullets weighed to +/- .2 gr) - Custom no groove "357AR" 180s and 200s, Range lead, +/- 0.5 gr, with special base forming setup
4. powder used and estimated or measured velocity - WC 680 powder, ~ 2050 Feet Per Second.
5. Rifle used and caliber - PSA AR-15 platform, MSR 357AR barrel, 2-7X Scope.
6. How accuracy compares to jacketed and/or traditionally lubed in the gun - Nothing but PC being run at this time
7. GC data - None
8. number of shots in the group - At least 5 for a typical group, some groups have a few extra.
9. Number of groups before accuracy deteriorates. - Barrel is not normally cleaned, I run all I want with no change in accuracy.
I have posted more about my efforts with the 357AR at
http://castboolits.gunloads.com/show...-Rimless)-AR15
My most recent range trip included a sub 4" group at 200 yards with my 200s at real close to 2050 fps (pic at post 83 in the thread at the link above).
I have had more than a few sub 2" groups at 100 yards with 180 and 200 gr bullets at over 1850 fps. I got the 180s to reliably shoot under 2 MOA at 100 yards first, but they do terrible at 200 yards. Eventually after I fabbed up a better batch of cases, the 200s started to shoot under 2 MOA. The 200s stay accurate out to 200 yards, and I can push them over 2000 fps with no loss in accuracy.