Boyer method for 6br tuning

[DanSavage]

I was definitely using flags. The first row +005 it was right to left from about 2:30 at least 7mph. I figured it would stay like that for awhile, so I began when the flags were spinning good and they were pointing the same way it seemed to go real good until the last group it began to rain so I waited a bit and realized that condition wasn’t going to come back lol.
The middle groups were shot while raining unfortunately lol ,, there wasn’t much wind but I saw a little switching but I don’t think it caught me much. By the time I was done with that line the rain had stopped.

The bottom groups were fired in a pretty good 7-10 mph tail wind trying to fire when the flags were spinning right at me.
I’ll admit I held 1 bullet hole for one shot during the whole test. Then I remember Tony’s book saying test in the wind and see what it will do like the one guy pointed out.

 

[ELR LVR]

Looks close +.005" in
going deeper looks like it got worse
Simply based on that you might try the other direction
Starting .005" off and go .-005" at a time until you got to -.030" off and see how it likes it.
We can't dictate what our rifle likes
--------------------------------------------
Another method I use to use for long 6mm VLD's
was
Start at +.005" in, and keep going out .005" until you get to +.060" in.
As the others said, You may also try going deeper.
Berger ran some tests and found there can be two or more nodes within a .140" spread on seating depth.

 

[JFrank]

I retuned a barrel with 1200 rounds that shot a little better. Another with closer to 1500 rounds that shot in the 2’s at 1000 yards after retuning.
The first one I still use for a practice barrel until those bullets are gone.
‘

 

[Jerry Wick]

I retuned a barrel with 1200 rounds that shot a little better. Another with closer to 1500 rounds that shot in the 2’s at 1000 yards after retuning.
The first one I still use for a practice barrel until those bullets are gone.
‘

I'm curious, did you find it just needed a longer seating depth to account for throat erosion or was is vastly different from the original tune?

 

[JFrank]

I'm curious, did you find it just needed a longer seating depth to account for throat erosion or was is vastly different from the original tune?

I looked at powder and seating, it went from a .025 jam to .017 jam. I’d have to check my notes but just off recall I took a little powder off. I also cleaned it real good but it was my first time in the 2’s

 

[JEFFPPC]

It may help readers to understand that Mid/Long range load work is different than short range.
We may put out a couple flags to help interpret a target but we don’t adjust for each shot or hold off to a different point of aim as the short range guys do.

It’s just a different animal.

In general I disagree. Basically I tune with 500 yrds in mind. When tuning you use flags to be sure your shooting in the same condition. You don't 'hold' to try and shoot small. In spite of what some believe, if it shoots big at 100 it normally will only shoot worse at 1000. Yes the 600 and 1000yd game has drifted to a run and gun style especially when 5 shot group's are used but even in the 10 shot format to try and get all shots in the same condition. So let me ask you a question. If you have a rifle that regularly shoots 100 yd 5 shot group's in the ones do you have an advantage over the guy whose gun is a .5 or .6 gun At 1000.

 

[DanSavage]

Well it’s been so long since I’ve tinkered with load testing I completely forgot about my load book until tonight lol
Barrel was new in 2017, it shot Hornady 105’s and Berger 105 vld’s real well also.
It also likes 29.3 of the same Varget also with the 107smk
The cool thing is I found a bunch of seating depth test results! It should definitely save components, now believe it or not, according to my data the sweet spot would correlate to +.000-+.005.
The +.000 is still in lands enough to leave marks on the bullet.
All my seating measurements are based off measurement of the Le Wilson seating stem and that is all I use.

 

[JFrank]

you have a rifle that regularly shoots 100 yd 5 shot group's in the ones do you have an advantage over the guy whose gun is a .5 or .6 gun At 1000.

Personally a never shoot at 100, my scope is
zeroed at 300 but to answer the question with my opinion and that’s not worth much. lol

I don’t think so, 100 yard tunes I’ve seen tend to fall apart at longe range, one reason is bullet hold/ neck tension errors don’t rare their ugly head at short range but can really break your heart at mid to long.
Another is the wrong primer choice.

just my opinion.
Jim

 

[JEFFPPC]

Hi Jim,
Turned necks will control neck tension. I never gave much attention to primers until I started shooting 1000. On 3 rifles it brought my ES which was 17 to 22 down to 4 to 10. Same primer for each and one I had never owned before. It doesn't shoot big and go small as range increases. Problem from tuning at 300 is conditions making flag use to be sure your shooting in the same conditions even more important. I agree they are different games but more in how the competitors have come to shoot them. Hard to pick at long range, ask me how I know. So wider stocks , heavier guns etc so when you hear Fire its how fast and how smooth you csn get 5 or 10 off. Not my cup of tea. There were several men who shot a match that went to 500yds I attended years ago who were mediocre in general. They moved on to 1000 and have been Very good and winners since then. Maybe different games fit our skill sets for personalities. For what it's worth, a friend who broke almost every IBS recored at a 1000 in 2014, his guns every year group back to back at 100yds in the low .1s snd zeros. Take it for what its worth.