Is your aiming accuracy @1000 comparable to one kernel?

[BartsBullets]

Math. There are 10 tenth's in a grain. Take a tenth of a grain then. Most of the time, depending on powder, there are 5 - 6 kernels in a tenth of a grain. I calculated that to be about 1.5 ft per second / kernel.

The way I shot in the IBS shoot today I was a brick shy of a kernel. Do figures lie or liars figure?

Oops I was off. 9.2 per 10th.

 

[Alex Wheeler]

Theres about 4 kernels in a tenth. Most barrels will shoot TINY at 1k for +/- 2 kernels. The window is wider if your looking for .5 moa at 1k. Just depends on your needs. I would say weighing to the kernel has been standard practice for almost 10 years in LR BR.

 

[BartsBullets]

It's okay Bart, there is actually ONE THING worse than screwing the pooch!





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Tom

The +\- 9 foot still stands!

 

[carlsbad]

I always weigh to the kernel. Problem is, my scale goes to 1/10 of a kernal. So sometimes I have trouble deciding if I should be .4 kernal light or .6 kernal heavy.

 

[Marksman63]

So, I understand that those weighting to a kernel, uses as well cases with all same volume to a kernel, bullets all same weight to a kernel, ... ability to read wind to a kernel and, of course, aiming the target to a kernel

 

[Torge]

I’ve done well testing at 300 yard, but better at 1000. I always get my charges to the kernel. The way the competitors at Deep Creek tune gives us a sound level of compensation for small variations in velocity. These nodes are not always pretty in terms of ES but work well. If you load outside of these nodes your error will be amplified and is a large part of the reason that Tom, Alex and others advocate ladder testing at 1000 yards.
David

 

[dkhunt14]

I think some of it depends on the accuracy of your scale. Plus or minus a 1/10 of a grain, then throw in the plus or minus .02 accuracy of the scale and your talking maybe coming out of your node.

I know with a heavy gun that tracks well at 1000, you can shoot the difference. Some days with the mirage it would be hard. Then you get that drizzly overcast day, that you can see little stones on the back bank, then your loads better be right, because that's when you can shoot those tiny little knots and maybe shoot a record. Matt

 

[Marksman63]

IMHO, it's a sort of balance between controllable and uncontrollable variables.
Ideally, our internal ballistics variables are controllable, depending on the accuracy of our loading instruments, our case/bullet sorting's accuracy and quality of our rifle's parts and building. Therefore if my rifle is in general capable of a consistent 0.2MOA, a one kernel accuracy is around +/- 0.30" @1000, i.e. 0.03MOA.

Is the measuring's accuracy of our uncontrollable variables (wind's speed and direction, temperature, humidity, pressure, etc.) comparable to 0.03MOA? How much do uncontrollable variables influence my "single kernel" accuracy?

Probably the Bryan Litz's WEZ simulation would provide an answer.

 

[Alex Wheeler]

Its hard to put an moa number on a kernel. The reason is some barrels can be forgiving when you break out of the node and others can get nasty. A tenth or two may add a couple inches to the group or it may add 10.

 

[Stan Taylor]

The +\- 9 foot still stands!

Bart an Tom I gots tweezers what next.

 

[hogpatrol]

Reloder 33 charcoal briquets come in different sizes so you have to pick out one that gives you that perfect weight. I use stainless tweezers so as to not induce any static electricity while digging in the pan to find the right one.

 

[retired]

yes for the most part that is correct...but you missed several things.
i do not know if wez works for long range benchrest.
you appear to be trying to justify NOT doing the work necessary to be a COMPETITOR vs results fodder.
be my guest, skip lots of steps, show up and help move me up the list.

So, I understand that those weighting to a kernel, uses as well cases with all same volume to a kernel, bullets all same weight to a kernel, ... ability to read wind to a kernel and, of course, aiming the target to a kernel

 

[retired]

i'll give you a clue.
i bought 4000 cases to get 200 that were acceptable to me.

So, as well cases with all same volume to a kernel,l

 

[dragman]

It makes difference yes. Since switching to a tuned beam scale from my original digital I noticed more consistency.
I will say the cartridge controls how much difference as well. If I'm shooting my lapua or a RUM with 100 grains of powder if is way more forgiving than a 6mm at distance.

 

[Marksman63]

i'll give you a clue.
i bought 4000 cases to get 200 that were acceptable to me.

Which brand???

 

[Alexander-M]

The way I see it, as many have already, if I can weigh to the kernel without too much problem, why not do it? Weighing to the kernel will certainly not hurt my score, and it may even help!

Alex

 

[retired]

rws

Which brand???

 

[Marksman63]

rws

Buy Lapua or Peterson. You would accept much more

 

[retired]

no...go look at your criteria...cause that is what i did.
rws is some of the best in the world.
lapua does not make 300 win mag.
i'm not sure pederson was around when i did this.
you are the last person i would take suggestions from.
you gave up BEFORE you pulled the trigger.

Buy Lapua or Peterson. You would accept much more

 

[6BRAckley]

What powder scale do you'all recommend to accurately weigh down to the single kernel?