Finding the right seating depth

[Tim Singleton]

We're getting way off track here.

Well, it's your thread, Tim. Just asking for clarification of a concept I'd not heard about before, to wit: that seating depth can be tuned to make a load (how shall I say it, then?) "wind insensitive".

Please slow down a little ...

I'm not even moving.

Let me know if any further clarification is required than is in my answer to your question.

 

[DanSavage]

Tim, round robin is instead of shooting a group all at once, you shoot 1 for each group then go back and shoot the second bullet for each group then shoot the third at each group.

 

[Tim Singleton]

Tim, round robin is instead of shooting a group all at once, you shoot 1 for each group then go back and shoot the second bullet for each group then shoot the third at each group.

Thanks, I'll read up on it

 

[Brians356]

Let me know if any further clarification is required than is in my answer to your question.

Very generous, I will, thanks!

 

[harv50]

Tim I disagree, you should mention wind. It is no different than a long range shooter trying to get a good ES. And I think daniel brothers covers alot of what you say is happening although there may be other factors involved. What you are saying does show up on the target and thanks for trying to help others with your knowledge.. harv

 

[Terry]

Once you find your favorite seating dept, do you chase it with barrel ware?

 

[Tim Singleton]

Once you find your favorite seating dept, do you chase it with barrel ware?

I do verify my jam length after each match and adjust if needed

 

[martin22250]

Same example of seating depth as tim first posted. 6ppc shot at 200 yards. Started at touch and moved in .004

 

[Tim Singleton]

Same example of seating depth as tim first posted. 6ppc shot at 200 yards. Started at touch and moved in .004

-.012 is looking Nice! Great example of seating depth testing
At 200 it's easy to see the correct depth. You read so many posts about guys doing (load development) by just picking at random a depth for what ever reason and loading 20 or more rounds with slight powder changes and pick the best it will do and stop. Or continue to constantly tweet powder by a tenth of a grain one way or the other. I did this myself for years because I didn't know any different.
As you can see once you have the correct seating depth you have a wider powder charge window.

 

[dedogs]

Tim, I think I'm missing something here. How is Martin's seating depth of .012 good when it's all over the place? .008 looks better to me. dedogs

 

[SHootSTraight22]

Tim, I think I'm missing something here. How is Martin's seating depth of .012 good when it's all over the place? .008 looks better to me. dedogs

I agree!!! .012 is all over the place!! If this is as good as the shooter/gun combo will group I would go with something between touching to .004-.008...This gun is really shooting best from touching to .008 it's obvious! What I would really do is reshoot this test from touching to atleast .030 off in .003 increments... Then I would choose the series of shots that are all hitting within the same point of impact like a OCW test.... I would choose one of the longest loads to shoot so I know I will hit the same spot as the barrel wears... Simple easy!!!

 

[SHootSTraight22]

If someone would like to see an awsome example of a seating depth test then post to let me know... You can send me a number to text a picture to then you can post my pic... I don't know how to post pics... I have a perfect example shooting in .003 increments with groups moving from .1moa all the way out to .5moa as the barrel finds it's tune...

 

[DHuffman]

With all due respect Tim , I don't think new guys should here this theory about "certain seating depths being effected by wind" MORE THAN OTHERS... I've noticed on many reloading/gun forums that new guys tend to take a lot of this stuff as religion and it causes them to be over anal with their methods (resulting in loss of fun...) Plus, they start trying to argue things like this with their full believe and passion, not realizing the person they're arguing with has had a gun in their hand since they came off their mothers tit.. Not counting they've been reloading since prepuperty..

If someone would like to see an awsome example of a seating depth test then post to let me know... You can send me a number to text a picture to then you can post my pic... I don't know how to post pics... I have a perfect example shooting in .003 increments with groups moving from .1 all the way out to .5 as the barrel finds it's tune...

Shootstraight22: I let your first quote on pg 3 of this thread go but now it seems you want to pick and choose who you deem worthy of your knowledge. I don't really care and find your attitude laughable but it's ideas like yours that have this forum branded as a bunch of elitist snobs if you care.
Tim seems to be trying to enlighten while you seem to believe a lot of us "new guys" can't handle any advanced knowledge. This is precisely why I and I'm sure many others come to these forums, to gain knowledge that is unavailable locally for many of us.
There are no long range precision shooters in my immediate area that I'm aware of. Everything I've learned in the last year about shooting has come from my son and I shooting thousands of rounds in our pasture/range or the internet.
Your notion to keep information from newbs is ridiculous on so many levels I'm not going to begin listing them.

Didn't see you don't know how to post pics. Sorry for the last remark

Tim:
Thanks for attempting to enlighten us knuckle draggers

 

[Tim Singleton]

Tim, I think I'm missing something here. How is Martin's seating depth of .012 good when it's all over the place? .008 looks better to me. dedogs

I agree!!! .012 is all over the place!! If this is as good as the shooter/gun combo will group I would go with something between touching to .004-.008...This gun is really shooting best from touching to .008 it's obvious! What I would really do is reshoot this test from touching to atleast .030 off in .003 increments... Then I would choose the series of shots that are all hitting within the same point of impact like a OCW test.... I would choose one of the longest loads to shoot so I know I will hit the same spot as the barrel wears... Simple easy!!!

I'm not sure what is meant by all over the place? We don't know if Martin dialed his scope over for wind age or not. To me it doesn't matter. I'll take 3 touching with no paper between them any day. The vertical location on the the groups at that depth look good.
I don't mind at all to answer any question that I can. Not trying to say I'm some great shooting guru. But I would like to share what I've learned over the last few years
Some of you may not be to familiar with a PPC. Which I think from the powder weight of N133 is what Martin is shooting. It is common to see them go from a horizontal slot to a vertical slot .5 grain of powder a part.
Please let me know the train of thought that the .008 depth with probably a 3/4-1" group is better than the .012 depth at 29.9 is a 3 shot group in the .1s at 200 yards!
The pic is posted in landscape, but I'm thinking he shot it stapled up in the portrait position
Picture it rotated 90 degrees clockwise.

 

[Tim Singleton]

If someone would like to see an awsome example of a seating depth test then post to let me know... You can send me a number to text a picture to then you can post my pic... I don't know how to post pics... I have a perfect example shooting in .003 increments with groups moving from .1 all the way out to .5 as the barrel finds it's tune...

Pm sent with my email address. I don't mind to post it for you if I can

 

[Brians356]

"Wow, .012 looks awful."
"No, .012 looks great."
"Awful!"
"Great!"

I guess that's what makes horse races - and shooting matches.

 

[Tim Singleton]

ShootStraight22 testing target

 

[SHootSTraight22]

ShootStraight22 testing target

Hey guys.. Thanks Tim Singleton for putting this up for me.. This is a seat depth test I did with my 6.5x47 and 140gr hybrids with 40gr H4350.. Barrel was nicely broke in at around 500-800rds I think,,, but not new and shooting from a Harris bipod laying in the back of the truck..... Notice I moved the bullet back in .003 increments.. Notice how the first two longest lengths hit bullseye (this was telling me I was on the lands..) After that you could tell the bullet was off the lands at .127....(the bullet moved to the right side of the bulleye.. What really got my attention was how the group opened up so much at .109.... I choose to shoot .127 with this load at this time (wear time) with this barrel... The reason is I want have to adjust the load for awhile before the group changes impact spots,, like a OCW test...

 

[SHootSTraight22]

"Wow, .012 looks awful."
"No, .012 looks great."
"Awful!"
"Great!"

I guess that's what makes horse races - and shooting matches.

Thanks,, If I shot bench or something similiar I would have choosen .112 load... I would have reshot the test with .114,.113,.112,.111, and .110 to double check it and see exactly where the gun starts shooting the .112 type group... Since I shoot practical/tactical I needed to choose a dependable load that would allow for wear.. You don't actually have to but it keeps me from having to check my gun periodically wearing down the barrel...

 

[SHootSTraight22]

With all due respect Tim , I don't think new guys should here this theory about "certain seating depths being effected by wind" MORE THAN OTHERS... I've noticed on many reloading/gun forums that new guys tend to take a lot of this stuff as religion and it causes them to be over anal with their methods (resulting in loss of fun...) Plus, they start trying to argue things like this with their full believe and passion, not realizing the person they're arguing with has had a gun in their hand since they came off their mothers tit.. Not counting they've been reloading since prepuperty..

If someone would like to see an awsome example of a seating depth test then post to let me know... You can send me a number to text a picture to then you can post my pic... I don't know how to post pics... I have a perfect example shooting in .003 increments with groups moving from .1 all the way out to .5 as the barrel finds it's tune...

Shootstraight22: I let your first quote on pg 3 of this thread go but now it seems you want to pick and choose who you deem worthy of your knowledge. I don't really care and find your attitude laughable but it's ideas like yours that have this forum branded as a bunch of elitist snobs if you care.
Tim seems to be trying to enlighten while you seem to believe a lot of us "new guys" can't handle any advanced knowledge. This is precisely why I and I'm sure many others come to these forums, to gain knowledge that is unavailable locally for many of us.
There are no long range precision shooters in my immediate area that I'm aware of. Everything I've learned in the last year about shooting has come from my son and I shooting thousands of rounds in our pasture/range or the internet.
Your notion to keep information from newbs is ridiculous on so many levels I'm not going to begin listing them.

Didn't see you don't know how to post pics. Sorry for the last remark

Tim:
Thanks for attempting to enlighten us knuckle draggers

I decided to post this publicaly because I want everyone to know something about me.. If I type something that in this "text messaging/emailing day and age" comes across wrong then I'm sorry.. I didn't mean anything rude to you, I swear!!! Have you ever thought that some may type at a key board without thinking to much into how they word things?? People!!! Everyone take their testosterone shots at 400mg per week and quit being so sensitive!! I didn't mean to insult you Sir, I don't know anything about you.. I'm just here like you, because I liked to talk about shooting and guns! This is the exact reason I don't go to the Hide anymore because of drama and booty buddies jumping in to disagreements like women!! I'm sorry....