Creedmoor shooter
Well-Known Member
Ok so I tried tweaking my load alittle tonight. I shot 42.1 and 42.2 grains. 42.1 opened up to .6 and 42.2 went to .9. So I'm going to try going the other way and go to 41.9 and 41.8 and see what happens.
Load or shooter?
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Canhunter35
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Just a thought but I would be more worried about your es if you're wanting to adjust your load than going from .5 to .3moa.Sometimes it's easier to get a better feel for how a rifle is shooting farther away once you're really tuned up.
I attached pics. At 100 it's hard to see what's going on, but rifles with a decent load shoot in a circle. Shoot 10 on a perfect day and exclude the outliers, examining the circle of bullet marks. A nice round circle indicates what a rifle is actually shooting in terms of Moa. The red plate is at 550 with my 130eldm. The 143eldx shoot darn near half that size out of the same rifle
Creedmoor shooter
Well-Known Member
I could take a few 300 yard grpuups to.see how they do. I chronoed this load in the summer and it had a es of over my chrono which I'm not sure how much I trust.
LoneTraveler
Well-Known Member
What is the cleaning cycle on this rifle? Do you clean it after every group?
If you have a bore scope, After the 4th shot check the bore it may be a problem with buildup somewhere in the barrel. Causing the 5th shot to go Oh S!!!
With a custom barrel this should not be a problem, But I have had to do a lot of lapping on factory barrels to get a rifle to shoot a consistent groups after about 3 shots they would start opening up and every shot opening the group bigger.
Just something to look at in your quest for consistent little group.
If you have a bore scope, After the 4th shot check the bore it may be a problem with buildup somewhere in the barrel. Causing the 5th shot to go Oh S!!!
With a custom barrel this should not be a problem, But I have had to do a lot of lapping on factory barrels to get a rifle to shoot a consistent groups after about 3 shots they would start opening up and every shot opening the group bigger.
Just something to look at in your quest for consistent little group.
huntaxhunta
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Have in mind that you want to shoot 6 rounds, then the fifth will go straight through, then stop there.
Creedmoor shooter
Well-Known Member
I generally clean around 100 rounds or so.
Creedmoor shooter
Well-Known Member
I'm thinking it has to be me. I started a new loaf work up with the 147 eld-m and rl-26. The group below it was the 4th shot that I kicked out. First 3 landed in a .194. I saw the group and got alittle excited and I'm pretty positive I pulled it because number 5 landed where it was supposed to after I saw I screwed up my group. The cluster of 4 measured .228
Is the flyer always low like that? In the first group you posted the flyer was low too....
Creedmoor shooter
Well-Known Member
Now that you mention it they're generally low right
Maybe your getting a slow round every now and then? Ignition problem?
Creedmoor shooter
Well-Known Member
I guess that could be possibly. But consistently the 4th and 5th shot?
Yea, don't know. Guess. if I had this issue, I would probably try a 10 show group to see what it looked like.
I was shooting some RL26 in a 6.5 CM last week and was having high ES. Like 40 PFS across 3 shots! Could have been having some chrony issues though. I tapped the neck of one of the fired cases on the bench and 2 grains of RL26 fell out. Load was hornady brass, F210M, 140 A-Max. This made me remember a post on the RL26 Creedmoor thread where a guy was getting high ES with RL26 in the CM. He started using magnum primers and the ES went very very low.
I was shooting some RL26 in a 6.5 CM last week and was having high ES. Like 40 PFS across 3 shots! Could have been having some chrony issues though. I tapped the neck of one of the fired cases on the bench and 2 grains of RL26 fell out. Load was hornady brass, F210M, 140 A-Max. This made me remember a post on the RL26 Creedmoor thread where a guy was getting high ES with RL26 in the CM. He started using magnum primers and the ES went very very low.
Creedmoor shooter
Well-Known Member
I'm not sure what is going on. I'm pulling my stinkin hair out though. It's happening with my 3 main powders which are h4350, rl-17, and rl-26. It's happening with all bullets too. Including some bergers I've got. I feel like I'm doing everything right butni just can't seem to pull it together. I checked my run out yesterday and I only had .002 run out.
Well probably not the RL26 then. Do you find yourself refocusing the parallax or anything during the groups? When I am really trying to shoot good groups. I put a long piece of thin cardboard on top of the barrel with double sided tape. I stops heat waves from the barrel affecting the scope image. Barrel heat can cause mirage that looks like your scope is outta focus.
