Installed a war valve that I polished the internals, radiused the port, thinned down the probe and cut the shoulder back. Installed a dual wound spring from shorty (Tim) on the gta, and an mds hammer. 2900-2200..3/4 turn in.. No preload, with 33 grain swagged slugs, 897, 900,905,912, 914, 908,912,917, 915,919,915,912,913,916,908, 905,907,900,902,895. At 919 I dropped in a 43.2 eunjin and it went 870 for 72 ft lbs. I'll be testing soon for heavier lead and a max 8 shot tune. Lots of adjustment and power still available. Also modded the stock and installed a power adjuster so I can adjust the spring without continually removing the stock