Creedmoor Hawkeye Predator's First Range Day

[Dranrab]

42.5 grains of IMR 4350 driving a Hornady 129gr SST, COAL 2.795 gave me this 3 shot group at 100 yards. By my imprecise measurement it's .35 center to center. Two literally went through the same hole. I think I have a shooter and a load. I need to adjust my scope a bit. Still getting everything set up.

The factory loads gave me sticky extraction. How do you read these empties.

 

[wwb]

Primers are definitely flattened a bit; also a little cold flow around the firing pin indent. I've seen FAR worse.

Sticky extraction might be a chamber finish issue - the fired brass doesn't look bad enough to cause it.

 

[Big Old Boy]

A little over max but nice group good shooting.

 

[Allen207]

Nice group, I find myself interested in the 6.5 Creedmoor.

 

[6GUNSONLY]

Primers are definitely flattened a bit; also a little cold flow around the firing pin indent. I've seen FAR worse.

Sticky extraction might be a chamber finish issue - the fired brass doesn't look bad enough to cause it.

Agree with this. I might do a little gentle polishing on that chamber. I had to do this on my Remington R-25 .308 recently and it seems to have solved the problem. Semiautos are different, I know, but it sure couldn't hurt anything. My extraction was so "sticky" it was tearing the rims off cases...
Ken