cart SHOPPING CART You have 0 items
SELECT CURRENCY

Discussion Forums

1
Search forums
Forum Index > Rifles general discussion > the optimal charge weight reloading method?

the optimal charge weight reloading method?

20 Apr 2015
@ 07:32 am (GMT)

Thomas Kitchen

never heard of this until someone mention ocw didnt have clue what they were talking about.
don't think ill bother trying it cause Nathan's methods are spot on but thought i put it out there if anyone uses it?
https://www.youtube.com/watch?v=dv-t0vO9IR8
http://optimalchargeweight.embarqspace.com/#/ocw-instructions/4529817134
for others that have never heard of it

Replies

1
20 Apr 2015
@ 10:58 pm (GMT)

Warwick Marflitt

Re: the optimal charge weight reloading method?
As an auto electrician having to fault find by using what I know about electricity electron flow in circuits ie it needs a good earth return back to the battery. The fuse has to be good
The wire thickness correct for the current draw of the motor. When I know the things that don't change and what is the right values for the circuit to work correctly. I can now start to conduct some intelligent tests starting with the easiest things to test progressing to the hardest last.
So I can see why he is in favor of the Round Robbin testing of shooting at targets in sequence the way he describes.
As for barrel harmonics I'm sure it is possible to test with oscilloscopes, load cells, super high speed cameras and actually see the barrel twist and flex back? or does it whip? as the bullet and pressure of powder ignition and burn cause Newtons law to take effect.
As the rifling and pressure force the bullet to twist and bite into the rifling creating torque as it travels out the barrel so the bullets resistance will apply torque back into the barrel?
Wouldn't it be great to study? Maybe Mythbusters will have a look at it?

21 Apr 2015
@ 06:27 am (GMT)

chris murphy

Re: the optimal charge weight reloading method?
Sounds like BS to me cos if his scope was set a minute to the right when he started he would be saying the other groups were more stable.
22 Apr 2015
@ 10:58 am (GMT)

Scott Campbell

Re: the optimal charge weight reloading method?
I have found this system works well - coupled with Nathan's input (via his books) - I was able to sort out a good accuracy load for my 700 Tactical 308 with a minimum of fuss and bother. In my opinion Dan Newberry's logic and methodology is quite sound - once you get the hang of it!



13 Jun 2016
@ 03:19 pm (GMT)

Tom Dixon

Re: the optimal charge weight reloading method?
I have been looking at this as a possibility, I like the idea of finding a sweet spot within a broader spread rather than picking the best group with the highest velocity from a ladder test. It ought to mean better tolerances of temperature and other factors beyond the shooters control. I know that when ladder testing loads in the past I have had maybe the 2nd, 3rd and 4th loads of a ladder form nice groups and then maybe the 5th and 7th shoot poorly with the 6th being good. The temptation is to choose the 6th as it is a good group with a higher velocity, but the OCW method would suggest choosing the 4th as the variations either side also shot well... Interesting stuff for sure. Love to hear Nathan's thoughts on this..

http://optimalchargeweight.embarqspace.com/ocw-overview/4529824091
13 Jun 2016
@ 04:37 pm (GMT)

Bryan Webster

Re: the optimal charge weight reloading method?
To be able to use it efficiently you should be doing those shots at 300 yards according to the many discussions I have red online regarding this.
13 Jun 2016
@ 04:46 pm (GMT)

Bryan Webster

Re: the optimal charge weight reloading method?
Several people claim this method works with minimum shots fired to get you accuracy load.
13 Jun 2016
@ 08:47 pm (GMT)

Nathan Foster

Re: the optimal charge weight reloading method?
Yes, the method has merit and what is said is true such as ES versus accuracy. Also, I have never been a fan of ladder testing and tend to use a method similar to the OCW so yes, I can understand this. I do not however have an acronym for this method. The need for acronyms is very typical of todays society where everything must be put in boxes. The problem is, this does not take the many other factors I have discussed in the book series into account.

As one example, I quite often see people loading 200 and sometimes 300fps below the potential of their rifle. The .270 Win is a classic example I have used multiple times here on the forums. Both my cartridges book and reloading book can be used to work towards rectifying this. I also find that as people load up, their shooting technique lets them down as they reach higher velocities but this is blamed on the barrel, not the person. So again, I used the full book series to work through this and as mentioned within the series, it was a tough call as to whether to have the shooting technique book first or get the rifle sorted first and have the shooting book released as the final installment (which is how it panned out).

For those who truly want a simple answer, here is a link to the most simplistic method I know:


http://shop.countdown.co.nz/?banner=www&_ga=1.212760148.1570583177.1465850688#url=/Shop/Browse/meat-seafood/game
13 Jun 2016
@ 09:12 pm (GMT)

Bob Mavin

Re: the optimal charge weight reloading method?
Ha ha, That's the answer Nathan!!! I'm selling all my gear and spending the money on that site.
13 Jun 2016
@ 11:04 pm (GMT)

Wayne Woodard

Re: the optimal charge weight reloading method?
Some interesting reading on http://www.varmintal.com/ regarding harmonics, fluting, action stresses and such.
14 Jun 2016
@ 02:07 am (GMT)

Martin Taylor

Re: the optimal charge weight reloading method?
Doesn't everybody find a stable, wide node and work within it??? I thought that was standard practice.....
Any load needs to be stable at different temps (pressures) both from atmospheric and chamber, what's the point of a shifting PIO if multiple follow up shots are needed, target or game.

I recall reading a certain book series that treats this as a whole, from beginning to end without the attached dribble. People over complicate the shit out of things these days and just to sound more intellectual than the next Muppet.
14 Jun 2016
@ 02:14 am (GMT)

Nathan Foster

Re: the optimal charge weight reloading method?
You mean the UYFCS method Marty?
14 Jun 2016
@ 09:09 am (GMT)

Thomas Kitchen

Re: the optimal charge weight reloading method?
that link was brilliant Nathan i had to laugh when i opened it.

im with you martin im just happy to have some trigger time, it never hurts to learn to do things properly.



14 Jun 2016
@ 10:22 am (GMT)

Cor Nepgen

Re: the optimal charge weight reloading method?
Hi all,

Nathan, I laughed quite a bit after opening that link. Point made haha.

I follow quite a few rifle and hunting pages out of interest. I like seeing different people's opinions and hearing different responses. However, as in all things its easy to listen to too many people's advice and end up doing too little and just generally making a giant stuff up. So I follow the books and am damn happy I'm doing it!

Keep well everyone and thanks for the laugh Nathan!

Cor

1
 

ABOUT US

We are a small, family run business, based out of Taranaki, New Zealand, who specialize in cartridge research and testing, and rifle accurizing.

store