Long range load development at 100 yards.

[villarreal]

[/quote]

There are no fliers, there is only "The group"...
[/quote]

That's right, I don't used the word flier, I call it "the one that got away".
And wherever the group, that's what my rifle and I can do.

G.

 

[Sled2live]

Erik,

Thanks for the education, I truly appreciate this post and you sharing the knowledge. It is also nice to know you are close by incase I need to pick your brain with some load development questions. I live between La Vernia and Floresville. Maybe you can point me to the range you use for the longer stuff....Nimrods GC only goes to 300 yards.

Thanks

Scott

 

[Erik Cortina]

Erik,

Thanks for the education, I truly appreciate this post and you sharing the knowledge. It is also nice to know you are close by incase I need to pick your brain with some load development questions. I live between La Vernia and Floresville. Maybe you can point me to the range you use for the longer stuff....Nimrods GC only goes to 300 yards.

Thanks

Scott

Scott, I have a personal range. If you ever need to do some shooting out to 1000 yards, let me know.

 

[ridgeway]

[quote author=RMulhern]
I've always considered 100 yards as a good distance to test 000 buckshot and I still feel as if it's worthless as teats on a boar hog! Hey...but whatever blows ya skirts up is fine with me!
[/quote]

This statement is just blatantly wrong.

Erik...thanks for taking the time posting and explaining. Very interesting!

 

[Down South]

Erik,

Thanks for the education, I truly appreciate this post and you sharing the knowledge. It is also nice to know you are close by incase I need to pick your brain with some load development questions. I live between La Vernia and Floresville. Maybe you can point me to the range you use for the longer stuff....Nimrods GC only goes to 300 yards.

Thanks

Scott

Scott, I have a personal range. If you ever need to do some shooting out to 1000 yards, let me know.

Some guys just have all the luck...... ;D 8)

 

[johara1]

A .100 group at 100 is a 1" at 1000 yds. till the conditions expand it to what ever. So to shoot mid range and a 1000 except in a match is just wearing out a good barrel for nothing. If you need to practice dry fire or use a junk barrel. Last year i shot over 20 2 and 3" groups at 1K matches and never fired a round except a 100 for development and 1000 at the match, so what Eric is trying to tell you is fact and not BS. Learn from it...... jim

 

[tonysnoo]

Hey Erik,

I routinely shoot at our 200. Are the same principles still valid or do I need to switch to 100?

Thanks, again
Tony

 

[Erik Cortina]

Hey Erik,

I routinely shoot at our 200. Are the same principles still valid or do I need to switch to 100?

Thanks, again
Tony

Same principles apply, however, I like 100 yards because I can keep all groups on same page which make them easier to read and reference in the future.

 

[Beau]

OCW article:

http://optimalchargeweight.embarqspace.com/

That seems awful complicated when you can just watch your chronograph and see when the velocities flatten out.

 

[palo]

Erik
What method do you use for adjusting seating depth when tuning a load ?
What distance are your bullets from the lands when you start load development ?

 

[Erik Cortina]

Erik
What method do you use for adjusting seating depth when tuning a load ?
What distance are your bullets from the lands when you start load development ?

I usually find that jam -.020" shoots good with most bullets, so I start there.

For testing, I start at Jam -.010" and work away from there in .003" increments.

 

[CatShooter]

OCW article:

http://optimalchargeweight.embarqspace.com/

That seems awful complicated when you can just watch your chronograph and see when the velocities flatten out.

My velocities have never flattened out. They keep on increasing until the bolt gets really hard to open.

 

[palo]

Erik
What method do you use for adjusting seating depth when tuning a load ?
What distance are your bullets from the lands when you start load development ?

I usually find that jam -.020" shoots good with most bullets, so I start there.

For testing, I start at Jam -.010" and work away from there in .003" increments.

Thanks Eric.
My problem is that I load to magazine length which leaves me some distance from the lands.
Would your testing method work in my situation ?

 

[Erik Cortina]

Erik
What method do you use for adjusting seating depth when tuning a load ?
What distance are your bullets from the lands when you start load development ?

I usually find that jam -.020" shoots good with most bullets, so I start there.

For testing, I start at Jam -.010" and work away from there in .003" increments.

Thanks Eric.
My problem is that I load to magazine length which leaves me some distance from the lands.
Would your testing method work in my situation ?

Yes, it will still work. Start at magazine length and then seat bullet deeper by .003" when testing.

 

[Erik Cortina]

The last two. They are same place vertically.
Did you see pressure signs?

 

[A j shooter]

Thay are just starting to show pressure signs.

 

[SDDasher]

Erik:
Would be interested in your opinion of the effect the magneto speed chrono might have on your method of arriving at the optimum load/node? As you know the front bayonet measurement device affixes to the barrel and does effect poi mostly in the area of elevation in my experience.
Also, is finding a "flattening of the speed" more noticeable using .05 incremental increases vs .02?

 

[savageshooter86]

so would he chose 46.5 gr?

 

[wooger]

I usually find that jam -.020" shoots good with most bullets, so I start there.

For testing, I start at Jam -.010" and work away from there in .003" increments.

Erik, what made you decide to use .003 increments? Do you see significant changes in tune during the testing of different seating depths? Once you have determined your optimum OAL do you vary this length during the life of the barrel?

Thanks,
Andrew

 

[savageshooter86]

Andrew not speaking for Erik but here is my last target show seating depth test. The furthers on left was jumped about 0.120" and the far right one was jammed 0.010". And look at the difference in groups as I get closer to the lands and eventually jammed. This was shot at 100 yards same day. Barrel cooled between groups
**I used Bergers seating depth for target shooters method to do this test**