Shot the 16.5 Proof Carbon barreled Fix today. Damn what a gun.
I shot a 10 round group and two nine round groups. The really high left was the only 130grn I shot aiming at the same point as the 10 rounds of 147 below it. Mind that all 3 groups each has 3 different charge weights. I was doing load dev more than shooting for groups. I shot seated off a bipod with no rear bag. 100 yards indoors. The 5 round group in the middle was sighting it in.
I know I can do a lot better but I was shooting for chrono data more than accuracy. Now I’ve got some loads I want to test for accuracy.
Note: magnetospeed V3 is 10000 times better than Caldwell chrono. I didn’t have any pressure signs but stopped because I didn’t want to push it. I felt like I should have had pressure signs at these numbers but it just wasn’t there.
16.5 inch Proof Carbon 6.5 Creedmoor Fix: 147grn at 2572 FPS. 2500 elevation. That’s crazy. Only 68 rounds on the barrel too. So it should speed up. But I want my awesome peterson brass to last so I’m going to dial it down to 39.9-40.9 by .01 grain increments and find the sweet spot. That should be around 2450 which makes me happy.
So what exactly did your rifle end up liking the most? I guess since you were just chrono'ing it not a big deal but I start losing track when mixing groups like that. Did you keep notes on the order and location of the hits by any chance?