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OCW load development
#1
Stumbled upon Dan Newberry's site the other day.
http://optimalchargeweight.embarqspace.com

I've already developed an accurate 168gr load for my 308, so if I don't like this technique I can just drop back to my current pet load, although I have yet to chronograph it. Any reloaders use Dan's method?
NRA Life Member, NRA Certified Instructor:  HFS, Pistol, Rifle, PPIH,PPOH
Suarez Combat Arms Instructor School
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#2
Most of my reloading is for pistol plinking. I do reload rifle rounds for some of my Mil-Surps in 6.5 Mannlicher, 303 Brit, and 7.7 Jap but I never really got into tweaking rifle rounds to squeeze all the accuracy I can out of them. I want to get a CZ 557 Short Action at some point and once I do, I'll need to work on making more accurate loads. I like the approach the author takes to working up loads even if I don't yet understand all the details (harmonics, shock waves, etc.) he covers. Thanks for the link, bookmarked for future reference.
Ammunition, it's the new lead bullion. Buy it cheap and stack it deep.
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#3
So I ran my OCW test on weds. Found 3 sequential charge weights that were hitting near the same place (POI). Groups were all pretty tight. This was the best and the charge weight I'll be using.

And the Bushnell G2DMR scope is fantastic.

   
NRA Life Member, NRA Certified Instructor:  HFS, Pistol, Rifle, PPIH,PPOH
Suarez Combat Arms Instructor School
Admit nothing.  Deny everything. Demand proof.
If we lie to the government, it's a crime. If the government lies to the people, it's called politics.
Paying for welfare is slavery.
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#4
Nice grouping. Dimes everywhere should be worried.
Ammunition, it's the new lead bullion. Buy it cheap and stack it deep.
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#5
I just read through a few pages of it and it makes perfect sense to me. I'll be playing with numbers in that fashion this summer. It sounds a bit confusing at first, but when you understand what he's driving at it all falls into place, it should yield a pet load that will have tolerance for slight variances in powder charge weight, primer type or brand of brass that will give you respectable groups that will be plenty good for plinking or hunting without resorting to using bench rest loading techniques to get consistent results. In other words, if you have a pet load that gives one hole groups but a variation of powder as slight as .1 grain really spoils the group, you'll spend a lot of time trickling powder for your hunting loads, but with this method you should be able to come up with a load that will give very good results even with variations of a tenth of a grain or more. Hunting and gong or silhouette shooting doesn't require "one hole" accuracy, but consistently hitting your target within a reasonable distance of POI is critical in all shooting disciplines. This method should attain that degree of accuracy without worry about the slightest variation.
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