Reducing ES on 10 shot groups

[Jerry Snyder]

Just go shoot. Life's too short........

Agree, being Autistic, it is hard to let things be. I was a Kaizen engineer and my job was to improve or eliminate everything except what added value to the final product.

 

[SKWERLZ]

Yes, using an AMP Annealer, will look into primer pocket uniforming.

How long was the ammunition loaded?


My 7mm hovers at 6-7 Sd for ten shots and with quality bullets vertical is something I don’t complain about shooting a lot a mile and beyond.

 

[ELR LVR]

I dusted off the 6 Dasher yesterday and used my Garmin chrono to log some info. I was happy with the group sizes, about .5 MOA. The velocity were what I expected, also the SD's. The ES were a little high for the group size/SD numbers. What would you suggest to reduce the ES numbers? View attachment 1653371

Try Rem 7-1/2 Primer or Wolf if you can find them.
I use Wolf SR Magnums
Many guys said they reported better ES & SD numbers from Wolf over the 7-1/2
And the 7-1/2 are very good to begin with
A Recent thread on here also showed majority of people agree the 7-1/2 Benchrest primer is tops.
---------------
Maybe Ditch the Varget
FYI, I have NEVER....liked Varget
I tried to make Varget work in a couple calibers
I only tried it because of the "FAD" of everyone using Varget
Kind of like the whole VV N-133 Fad, when I would rather just use WC-844
I bought 2 lbs of Varget once, only once and went through 1 lb and did not have good accuracy or any luck with it
over my standard "GO TO" powders
My second pound of Varget sits on the shelf as it is a waste of components for me to mess with.
I may use it for fire forming or something. I instantly.... had MUCH better luck with
Benchmark & W-748 --- (best all around powder period from .222 up to 22-250)
W-748 has always performed and performed very predictably, including from Lot to Lot.
-------------------------
If somebody else likes Varget and gets it to work... I'm very happy for them.
I am having excellent results with AA-2520 recently in a couple 22 BR's for what that's worth.
I was trying to find a replacement for a powder Called SRB-118 which used to be used in the Military's 308 rounds. One of the most accurate 22BR powders I have ever used.
SRB-118 stands for (Service Rifle Ball -M118) Not available anywhere except in the hands of whorders like me.

 

[Jerry Snyder]

How long was the ammunition loaded?


My 7mm hovers at 6-7 Sd for ten shots and with quality bullets vertical is something I don’t complain about shooting a lot a mile and beyond.

A few months ago

 

[Jerry Snyder]

Try Rem 7-1/2 Primer or Wolf if you can find them.
I use Wolf SR Magnums
Many guys said they reported better ES & SD numbers from Wolf over the 7-1/2
And the 7-1/2 are very good to begin with
A Recent thread on here also showed majority of people agree the 7-1/2 Benchrest primer is tops.
---------------
Maybe Ditch the Varget
FYI, I have NEVER....liked Varget
I tried to make Varget work in a couple calibers
I only tried it because of the "FAD" of everyone using Varget
Kind of like the whole VV N-133 Fad, when I would rather just use WC-844
I bought 2 lbs of Varget once, only once and went through 1 lb and did not have good accuracy or any luck with it
over my standard "GO TO" powders
My second pound of Varget sits on the shelf as it is a waste of components for me to mess with.
I may use it for fire forming or something. I instantly.... had MUCH better luck with
Benchmark & W-748 --- (best all around powder period from .222 up to 22-250)
W-748 has always performed and performed very predictably, including from Lot to Lot.
-------------------------
If somebody else likes Varget and gets it to work... I'm very happy for them.
I am having excellent results with AA-2520 recently in a couple 22 BR's for what that's worth.
I was trying to find a replacement for a powder Called SRB-118 which used to be used in the Military's 308 rounds. One of the most accurate 22BR powders I have ever used.
SRB-118 stands for (Service Rifle Ball -M118) Not available anywhere except in the hands of whorders like me.

Thank you for your thoughts.

 

[SKWERLZ]

A few months ago

The reason I ask is I’ve seen reloaded ammunition show a higher SD after storage for a while vs fairly fresh ammunition depending on how the cases were processed.

 

[Jerry Snyder]

OK, I uniformed the primer pockets, and added a few more kernels of powder and think I have solved my concern. Grouped 1/2 MOA at 100 yards. My results are as follows:

 

[Gil P.]

It could be your ignition system. Shoot it at distance and see if it still groups well. Im not an expert by any means, but sometimes ES didnt matter as much as I thought. My shots still grouped well past 600 yards and I had ES like yours.

 

[Gil P.]

OK, I uniformed the primer pockets, and added a few more kernels of powder and think I have solved my concern. Grouped 1/2 MOA at 100 yards. My results are as follows: View attachment 1654679

I just saw this post. I'm glad you got it figured out. Those numbers look great!