6BRA load data

[Northridge]

If I shot a ladder that printed like that I would go right in the middle .006 with my load.. That would be pretty safe..lol


Ray

Ray I do split tune window on many things depending on what I am trying to do but these days I have started to shoot seating position winners as shot with out the split heads up or the solid seating as shot. I have found it to share both point of impact positions when doing so when shooting 5 shot targets below 4". 10 shot strings mask the indifference better I have found. Seating is my last line of attack as powder and bushing & some other details have been maximized with barrel compensation in mind by this point. I observe a optimum tuning window or location as a compass or simply a square 4 sided box it will have a top, bottom, left & right side. as you push a platform into tune usually it will enter the box from the bottom quadrant and usually for me in a upper case capacity window it will slightly roll left showing the right wall or quadrant of box then as charge go's it will move to the left revealing the left wall or quadrant. then as you push it a little more it will reveal the top of box or upper Quadrant. then as you ask more it will blow through the top of the box headed for Alaska. the platform and powder type will determine how it travels through the box all ways enter from the bottom region if working up that is powder & often I will split the powder window depending on how its using the "BOX" some powder primer combo's don't like to be tamed in a square box but more of a vertical rectangle still has 4 side but a vertical rectangle non the less. now the topic of a seating Ladder or sign wave it will usually still have a 2 sides and a top if your in a forgiving spot but as far as over lap get in line as you will be struggling for awhile there most all ways .001 maximum then a quadrant shift or relocation in "the Box" that's why I do not split anymore as it is not fine enough to split but often the bottom of the box will be my winner or from 6 oclock but if there is color affinity and inside this "BOX" so to speak it will hold. Short and squatty shapes are my last option when choosing what one to go with. Alex"s Yellow color is my winner not because of size but shape it will handle rolling condition sounder IMO I don't view my smallest seating best as being ragged edge of tune like I do when making decisions on powder ragged edge, I used to but not these days.

Shawn Williams

 

[Dave Way]

Alex built me this rifle a couple months back and I couldn’t be any happier. First 6BR Improved I have worked with. It just handles great and seems to give consistent feedback with whatever tests I do. You know, not the tests that leave you scratching your head. Small groups to date are 2.3” for 5 and 4.4” for ten shots.



Here is a powder ladder shot at 1K with a new Hawk Hill barrel I was breaking in. The last 15 shots from the five highest loads printed in 6.25”. The barrel shows a lot of promise but needs more testing. I pulled it off and put my Krieger back on. Matches are upon us so I’ll go with the proven barrel/load and come back to this one in the fall. That’s something I’m looking forward to. It looks like it wants to run at about 2,960-2,970. The Krieger likes 2,945.



Load data is on on the target. Velocities were with an Oehler 35P, 15’ from the muzzle.

I did re-shoot part of the ladder with higher charges but 30.9 and 31.0 went vertical on me.

Dave.

 

[Northridge]

Alex built me this rifle a couple months back and I couldn’t be any happier. First 6BR Improved I have worked with. It just handles great and seems to give consistent feedback with whatever tests I do. You know, not the tests that leave you scratching your head. Small groups to date are 2.3” for 5 and 4.4” for ten shots.

View attachment 1113182

Here is a powder ladder shot at 1K with a new Hawk Hill barrel I was breaking in. The last 15 shots from the five highest loads printed in 6.25”. The barrel shows a lot of promise but needs more testing. I pulled it off and put my Krieger back on. Matches are upon us so I’ll go with the proven barrel/load and come back to this one in the fall. That’s something I’m looking forward to. It looks like it wants to run at about 2,960-2,970. The Krieger likes 2,945.

View attachment 1113183

Load data is on on the target. Velocities were with an Oehler 35P, 15’ from the muzzle.

I did re-shoot part of the ladder with higher charges but 30.9 and 31.0 went vertical on me.

Dave.

That is a perfect powder ladder in my opinion & here is why even in the wrong spot it still had color affinity and that matters more than anything being developing a lazy tune is not always easy but you nailed it here not one lost shot

Shawn Williams

 

[Raythemanroe]

Alex built me this rifle a couple months back and I couldn’t be any happier. First 6BR Improved I have worked with. It just handles great and seems to give consistent feedback with whatever tests I do. You know, not the tests that leave you scratching your head. Small groups to date are 2.3” for 5 and 4.4” for ten shots.

View attachment 1113182

Here is a powder ladder shot at 1K with a new Hawk Hill barrel I was breaking in. The last 15 shots from the five highest loads printed in 6.25”. The barrel shows a lot of promise but needs more testing. I pulled it off and put my Krieger back on. Matches are upon us so I’ll go with the proven barrel/load and come back to this one in the fall. That’s something I’m looking forward to. It looks like it wants to run at about 2,960-2,970. The Krieger likes 2,945.

View attachment 1113183

Load data is on on the target. Velocities were with an Oehler 35P, 15’ from the muzzle.

I did re-shoot part of the ladder with higher charges but 30.9 and 31.0 went vertical on me.

Dave.

You going with 30.7?

Ray

 

[Dave Way]

You going with 30.7?

Ray

30.75 to start group testing with but will probably cheat down to 30.6 area. This was H4895 lit by a 205M primer, I'm surprised I forgot to put that on the target!

Dave.

 

[R.Morehouse]

30.75 to start group testing with but will probably cheat down to 30.6 area. This was H4895 lit by a 205M primer, I'm surprised I forgot to put that on the target!

Dave.

Dave
You making it to Williamsport for the open this year? Our guns look very similar.....

Regards
Rick

 

[Dave Way]

Dave
You making it to Williamsport for the open this year? Our guns look very similar except mine has a tuner hanging off the end.

Regards
Rick

I'll look for you in two weeks.

Dave.

 

[R.Morehouse]

Very Cool..Forgot that I am breaking in a new barrel and the tuner won't be on it for the open.....It should be a good time.

Rick

 

[Raythemanroe]

Ray I do split tune window on many things depending on what I am trying to do but these days I have started to shoot seating position winners as shot with out the split head up or the solid seating no shot. I have found it to share both point of impact positions when doing so when shooting 5 shot targets below 4". 10 shot strings mask the indifference better I have found. Seating is my last line of attack as powder and bushing & some other details have been maximized with barrel compensation in mind by this point. I observe a optimum tuning window or location as a compass or simply a square 4 sided box it will have a top, bottom, left & right side. as you push a platform into tune usually it will enter the box from the bottom quadrant and usually for me in a upper case capacity window it will slightly roll left showing the right wall or quadrant of box then as charge go's it will move to the left revealing the left wall or quadrant. then as you push it a little more it will reveal the top of box or upper Quadrant. then as you ask more it will blow through the top of the box headed for Alaska. the platform and powder type will determine how it travels through the box all ways enter from the bottom region if working up that is powder & often I will split the powder window depending on how its using the "BOX" some powder primer combo's don't like to be tamed in a square box but more of a vertical rectangle still has 4 side but a vertical rectangle non the less. now the topic of a seating Ladder or sign wave it will usually still have a 2 sides and a top if your in a forgiving spot but as far as over lap get in line as you will be struggling for awhile there most all ways .001 maximum then a quadrant shift or relocation in "the Box" that's why I do not split anymore as it is not fine enough to split but often the bottom of the box will be my winner or from 6 oclock but if there is color affinity and inside this "BOX" so to speak it will hold. Short and squatty shapes are my last option when choosing what one to go with. Alex"s Yellow color is my winner not because of size but shape it will handle rolling condition sounder IMO I don't view my smallest seating best as being ragged edge of tune like I do when making decisions on powder ragged edge, I used to but not these days.

Shawn Williams

I am moving to what you call the bottom of the "box" I call it a node.. I have had problems with pushing it and temps increasing.. I think bottom is smarter but it all depends in this game on so many variables which I'm sure you understand..

Ray

 

[ledward]

Heres a seating depth test I shot at 1k a couple weeks ago.
28" krieger, Bat MB, foam-fill LRB stock
H4895 31.1 2985-2990 fps
103 Vapor trail (not sorted) .004, .006 and .008 in the lands yellow, blue, green
fed 205

View attachment 1112786

Alex, would you shoot this test a few times to verify that it is repeatable?

 

[KenOath]

Alex built me this rifle a couple months back and I couldn’t be any happier. First 6BR Improved I have worked with. It just handles great and seems to give consistent feedback with whatever tests I do. You know, not the tests that leave you scratching your head. Small groups to date are 2.3” for 5 and 4.4” for ten shots.

View attachment 1113182

Here is a powder ladder shot at 1K with a new Hawk Hill barrel I was breaking in. The last 15 shots from the five highest loads printed in 6.25”. The barrel shows a lot of promise but needs more testing. I pulled it off and put my Krieger back on. Matches are upon us so I’ll go with the proven barrel/load and come back to this one in the fall. That’s something I’m looking forward to. It looks like it wants to run at about 2,960-2,970. The Krieger likes 2,945.

View attachment 1113183

Load data is on on the target. Velocities were with an Oehler 35P, 15’ from the muzzle.

I did re-shoot part of the ladder with higher charges but 30.9 and 31.0 went vertical on me.

Dave.

Man I can’t wait for my Wheeler stock to get here!!!

Thanks for the great write up, easy to follow what’s going on there...Nice set up to, hows the Kahles scope working out for you?

 

[Alex Wheeler]

Alex, would you shoot this test a few times to verify that it is repeatable?

No. I have been shooting ladders like this for going on about 10 years now. You dont accidentally put 3 consecutive groups in the sub 2s for vertical. Now if it was a generally poor looking ladder with one good group in it, you would want to re shoot it to see if it repeats. But even if it did you wouldnt want to use a load like that anyhow. I learned very early on not to waste time shooting these in poor conditions. Benchrest barrels dont last very long at their peak, you need to find an efficient way to get them figured out quickly, if your not confident in the result you see, find a method that gives you that confidence.

I am really not liking the ladder term any more. These are not true ladders, and are so much more than looking for a couple bullet holes that are close together. The ladder term causes people to over simplify them and overlook all the other data they offer. They are in reality long range sine wave tests, and I will refer to them as such from now on.

 

[Dave Way]

Man I can’t wait for my Wheeler stock to get here!!!

Thanks for the great write up, easy to follow what’s going on there...Nice set up to, hows the Kahles scope working out for you?

Alex’s stocks are worth the wait. I was shooting March High Master straight 48’s. Tested one of these and now I shoot them exclusively. Great scopes.

Dave.

 

[KenOath]

LOTSA GOOD info in this thread..specially the last few pages!!!.

 

[KenOath]

Ray I do split tune window on many things depending on what I am trying to do but these days I have started to shoot seating position winners as shot with out the split head up or the solid seating no shot. I have found it to share both point of impact positions when doing so when shooting 5 shot targets below 4". 10 shot strings mask the indifference better I have found. Seating is my last line of attack as powder and bushing & some other details have been maximized with barrel compensation in mind by this point. I observe a optimum tuning window or location as a compass or simply a square 4 sided box it will have a top, bottom, left & right side. as you push a platform into tune usually it will enter the box from the bottom quadrant and usually for me in a upper case capacity window it will slightly roll left showing the right wall or quadrant of box then as charge go's it will move to the left revealing the left wall or quadrant. then as you push it a little more it will reveal the top of box or upper Quadrant. then as you ask more it will blow through the top of the box headed for Alaska. the platform and powder type will determine how it travels through the box all ways enter from the bottom region if working up that is powder & often I will split the powder window depending on how its using the "BOX" some powder primer combo's don't like to be tamed in a square box but more of a vertical rectangle still has 4 side but a vertical rectangle non the less. now the topic of a seating Ladder or sign wave it will usually still have a 2 sides and a top if your in a forgiving spot but as far as over lap get in line as you will be struggling for awhile there most all ways .001 maximum then a quadrant shift or relocation in "the Box" that's why I do not split anymore as it is not fine enough to split but often the bottom of the box will be my winner or from 6 oclock but if there is color affinity and inside this "BOX" so to speak it will hold. Short and squatty shapes are my last option when choosing what one to go with. Alex"s Yellow color is my winner not because of size but shape it will handle rolling condition sounder IMO I don't view my smallest seating best as being ragged edge of tune like I do when making decisions on powder ragged edge, I used to but not these days.

Shawn Williams

So each of your four quadrants are the 3 shot groups of each different powder charge and your 4 quadrants of the box make up the tune window more or less until it breaks out and up to Alaska? Obviously the quadrant starts at bottom of box usually, if you are working a powder charge from bottom to top?

 

[Northridge]

So each of your four quadrants are the 3 shot groups of each different powder charge and your 4 quadrants of the box make up the tune window more or less until it breaks out and up to Alaska? Obviously the quadrant starts at bottom of box usually, if you are working a powder charge from bottom to top?

basically yes and powder will have a cut off when it is forced to leave the county unless your platform is rather flexible it will resist the urge to go to Alaska Lol. seating depth tests will continue too bounce around the "box" like a revolving door really, takes extreme seating to really get it to make a big move or radical change unless your charge window is really not in a place that capitalizes on positive compensation or pause. what I would consider traditional tuning or building of ammo will often be poor or sloppy coming in to tune tune widow will be very small before chartering a plane to Alaska..

Shawn Williams

 

[KenOath]

basically yes and powder will have a cut off when it is forced to leave the county unless your platform is rather flexible it will resist the urge to go to Alaska Lol. seating depth tests will continue too bounce around the "box" like a revolving door really, takes extreme seating to really get it to make a big move or radical change unless your charge window is really not in a place that capitalizes on positive compensation or pause. what I would consider traditional tuning or building of ammo will often be poor or sloppy coming in to tune tune widow will be very small before chartering a plane to Alaska..

Shawn Williams

Thankyou..

Seeing large movement or variations in your seating POI or quadrant shift with seating tests would give an indication of powder charge not at optimal..good to know will keep that in the notes. I’ll be watching for the high rollers chartering a plane North
I’m hoping my new platform has strong will power and can resist the Urges!!

 

[Alex Wheeler]

Shot some new bullets today. 30.1-30.3 of h4895 at 1k. These are the new bullet that Tom Mousel has been developing with Roy Hunter. "Bullet A"

 

[ttfreestyle]

Man I wished it was cool enough here for jackets!

 

[DHuffman]

Here's where I'm at with the "A"s