6.5-280AI 26 inch benchmark 1 in 8 twist peterson 280 AI brass necked down and turned to .014 thickness once fired 62.2gr. RL-23, CCI mag primer, 123 AH, 5 shot chrono at 3537 with a 3.6 SD .325MOA at 150 yards 3.420 coal a .040 jump, .004 neck tensionPlease provide load details, barrel, brass, twist, etc for all. Thanks!
I'm working on the load data spreadsheet to post.
I have noticed with staball 6.5 when you get to upper end loads it will get real jumpy with velocitySo did some testing with Superformance in the 6.5 PRC, went from 57.6gr up to 61.8g and velocity went from 3153 to 3420 with some light extractor marks and a heavier bolt lift. I'll be giving the 61.2 to 61.5 window a test as the velocity spread was only 3396 to 3402. The whole group was roughly 1.5 MOA but the first 4 were low while the remaining 11 went sub 3/4 MOA.
I also did more testing with StaBall 6.5, did the same load as last week but the groups opened to 1 MOA instead of sub 1/2 MOA. The weird thing is that the velocities seem to split between 3320 and 3360 with an odd 11 o'clock string even though they are all 59.3gr. I have the Lee FCD on order so I will have to try that and see if it helps tames the odd results I seem to be getting with StaBall.
Also I've been updating the document so if anybody else wants to add their load data please feel free.
Yeah I think I'm going to back down a bit to try a lower node and see how that goes and use Superformance for the faster node. I also have the 109gr AH coming this week so I'll give StaBall a shot with those.I have noticed with staball 6.5 when you get to upper end loads it will get real jumpy with velocity