22-250 8 twist groups

[josebd]

I'm getting closer to dialing this shilen 26 inch 8 twist barrel,with savage 10 action.
200 yards,5 shots,28 degrees, no wind.
H4350,36.1,cci br2,77 hpbt sierra,new nosler brass( no prep).
.005 has less verticle with little less than 1 1/4 group.
.010 1 inch group.
.015 5/8 inch group but some verticle.
.020 not good.
What is next to tighten up these groups?
Try different primers?

 

[22DASHER]

.015 and give it some slight changes in powder charge. Go up and down a few tenths.

 

[josebd]

Ok,I will try that

 

[C.E.Smith043]

Wind flags... Theres no such thing as "No Wind"

 

[josebd]

Oh ok,if you say so

 

[Greyfox]

Wind flags certainly won't hurt. There is no such thing as "no wind". But the simple truth of the matter is, that may be as good as it's going to get. The 22-250 has never been known as a super accurate round. For 100-200 yard accuracy a 14" twist would be a little better. I doubt you have a 3" forend. Put all od this together and you are shooting very well as is your rifle.

Rick

 

[josebd]

It’s a bell and Carlson varmint tactical stock

 

[Greyfox]

It’s a bell and Carlson varmint tactical stock

Don't misunderstand. I'm not criticizing your equipment, technique or your shooting skills. Rather, I'm suggesting that you are getting just about all your setup is capable of consistently shooting.
I thought the groups looked pretty good, but you won' get benchrest accuracy out of what you are shooting. In spite of what you read on the innertube, not many rifles are capable of consistent 1/2 MOA groups. But, I would still encourage you to get a good set of flags and use them....every time.

Rick

 

[josebd]

Well thank you for your advice, I really do appreciate it,but I'm going to keep trying at 200 and see how good it can do.

 

[Greyfox]

Well thank you for your advice, I really do appreciate it,but I'm going to keep trying at 200 and see how good it can do.

Absolutely!!!

Rick

 

[Evan]

Wind flags... Theres no such thing as "No Wind"

Maybe he's in a giant warehouse?

Wind flags certainly won't hurt. There is no such thing as "no wind". But the simple truth of the matter is, that may be as good as it's going to get. The 22-250 has never been known as a super accurate round. For 100-200 yard accuracy a 14" twist would be a little better. I doubt you have a 3" forend. Put all od this together and you are shooting very well as is your rifle.

Rick

I entirely disagree. The 22-250 has always been an exceptionally accurate cartridge and has a history of performance. One notch down from a 6BR. Two down from PPCs. That said, all three of my barrels were 14 twist and I shot 52 FB match bullets out of them. 35.2gn of 4046 and every barrel shot better than 0.3 MOA all the time.

That's not a wallet group, that's what the gun will do but I HAVE to use wind flags and I have to pay attention.


Not as many people play this game though. The 22-250 is almost entirely used by hunters where minute of gopher is the only metric and the accuracy isn't teased out beyond that so I can understand why you have your opinion about it.

hosebd, I think you should move in to 100 and retry with 10 and 15, and see if it holds. Then try bumping powder charge up and down 2 tenths to check the node at the best seating depth. My 22-250 is pretty forgiving on seating depth, I don't really have to chase the lands to maintain the groups. I also never push my loads to hot. I always go one or more nodes down from the top and my barrels go past 2000 rounds with slow firing.

Edit: Skimming the necks will help too. Uniform neck tension has been important for my rifle.

Once you're dialed at 100, when you go to 200, you'll know better if it's you/the wind or the load.

Little sprinkler flags from lowes or home depot are cheap and do fine for wind.

 

[C.E.Smith043]

Maybe he's in a giant warehouse?

I highly highly doubt that. And that's putting it mildly

 

[Evan]

I highly highly doubt that. And that's putting it mildly

I wish I had an enclosed 200 yard warehouse/shooting range to shoot in. Load development would be so straightforward!

 

[nmkid]

Do you have any H4831sc? I would try some before making any other adjustments

 

[josebd]

I shoot just when it’s light enough out here in between midland and lubbock.
I know when there’s even just a little wind,wide open country out here.90 percent of the time hardly no wind,that time of morning,and I have used flags.

 

[josebd]

Maybe he's in a giant warehouse?




I entirely disagree. The 22-250 has always been an exceptionally accurate cartridge and has a history of performance. One notch down from a 6BR. Two down from PPCs. That said, all three of my barrels were 14 twist and I shot 52 FB match bullets out of them. 35.2gn of 4046 and every barrel shot better than 0.3 MOA all the time.
View attachment 1074385
That's not a wallet group, that's what the gun will do but I HAVE to use wind flags and I have to pay attention.


Not as many people play this game though. The 22-250 is almost entirely used by hunters where minute of gopher is the only metric and the accuracy isn't teased out beyond that so I can understand why you have your opinion about it.

hosebd, I think you should move in to 100 and retry with 10 and 15, and see if it holds. Then try bumping powder charge up and down 2 tenths to check the node at the best seating depth. My 22-250 is pretty forgiving on seating depth, I don't really have to chase the lands to maintain the groups. I also never push my loads to hot. I always go one or more nodes down from the top and my barrels go past 2000 rounds with slow firing.

Edit: Skimming the necks will help too. Uniform neck tension has been important for my rifle.

Once you're dialed at 100, when you go to 200, you'll know better if it's you/the wind or the load.

Little sprinkler flags from lowes or home depot are cheap and do fine for wind.

I use to do load development at 100 yards,then everybody said 100 yards you can’t tell nothing,go to 200. I don’t know????

 

[josebd]

I was told by many that a good group at 100 yards wouldn’t be good at 200 yards!

 

[JFrank]

I'm getting closer to dialing this shilen 26 inch 8 twist barrel,with savage 10 action.
200 yards,5 shots,28 degrees, no wind.
H4350,36.1,cci br2,77 hpbt sierra,new nosler brass( no prep).
.005 has less verticle with little less than 1 1/4 group.
.010 1 inch group.
.015 5/8 inch group but some verticle.
.020 not good.
What is next to tighten up these groups?
Try different primers?
View attachment 1074289 View attachment 1074290 View attachment 1074291 View attachment 1074292

Wind flags will always help"

I would stay with the top target for seating at least at the moment.
Assuming you have performed a ladder test"
You can tinker with the powder charge .1 each side of the current charge.
Indeed primer selection can change performance dramatically.
Test several side by side
BUT AFTER initial load development

 

[Coyotefurharvester]

Most people will not notice a less than 4 mph wind on their face, your load will drift .85 ish at 200 with 2.5 mph right angle wind. I always feel lucky at my range when I can set up with flags(no one around) for load testing. Sometimes I just tell others the target burning barrel is full and I light it up, or worse display wind on my NOAA weather app.

 

[GWY]

josebd;

I shot a 8" twist 22/250 with H4350 but used 80 SMKs and Federal 210Ms to get around 3100fps (26" barrel). Consistent half minute and under 5 shot groups out to 300 yards (the furthest I ever tested it). No experience using the 77SMKs, but you might give the 80s a try.

Regards

GWY