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Question for the reloaders here?

This is a discussion on Question for the reloaders here? within the Accuracy forums, part of the M14 M1A Forum category; I am intending to do a load workup for my M1A using H4895 powder and 155 vs 168 grain Hornady A-Maxes... Last loads of 42.0 ...


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Old December 27th, 2016, 06:45 PM   #1
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Question for the reloaders here?

I am intending to do a load workup for my M1A using H4895 powder and 155 vs 168 grain Hornady A-Maxes... Last loads of 42.0 grains did not shoot as well as my 41.0 grain loads.

Question: Is a .2 tenth work up better for accuracy results? Should I weigh or just adjust my thrower?

Thanks,

Jeff

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Old December 27th, 2016, 08:43 PM   #2
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With a case the size of the 7.62 I like to go in .3 grain increments. When I find an accuracy node, I load 5 under, 5 over and see what works best. Save's components.

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Old December 27th, 2016, 09:10 PM   #3
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I think you will find 4895 to course to work well in a powder measure

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Old December 28th, 2016, 07:45 AM   #4
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The load you work up to is good for that lot of powder.
The biggest asset to accuracy is to have minimum bullet run-out(.003" T.I.R. or less) and consistent neck tension from one round to the next.
Also-size the case to fit YOUR chamber.
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Old December 28th, 2016, 08:51 AM   #5
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Throwers are garbage, I set mine close and then trickle up. I would never just use the thrower.

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Old December 28th, 2016, 09:42 AM   #6
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Blacktail nailed it for you Jeff. As coarse as H4895 is it is difficult to concistantly get .2 unless you are going to throw .5 under and trickle in the final little dab. Don't know if one of the new electronic scales can get you concistant enough to show a difference at the target as I don't have one. Don't know if you are going to really see much difference between the two bullets-I know that I can't shoot good enough to see it.

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Old December 28th, 2016, 01:07 PM   #7
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You'll see more deviation from the brass than you will from a .2 charge difference.

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Old December 28th, 2016, 04:57 PM   #8
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Quote:
Originally Posted by boomerpusher View Post
Blacktail nailed it for you Jeff. As coarse as H4895 is it is difficult to concistantly get .2 unless you are going to throw .5 under and trickle in the final little dab. Don't know if one of the new electronic scales can get you concistant enough to show a difference at the target as I don't have one. Don't know if you are going to really see much difference between the two bullets-I know that I can't shoot good enough to see it.
Thanks boomerpusher, and all who replied! Am sure I do not shoot well enough either but am hoping all this work will let me play with the new crono and let me pick one load to stick with.

I have loaded up 30 rounds tonight of the lower charges (40.5, 40.7, 40.9); 5 rounds each of Hornady 155/168 A-Maxs.
??? how do you guys weigh your charges!? I do not have the patience and stopped at 30 tonight.... threw close and trickled using my brothers PACT digital scale... Do the 41 grain stuff tomorrow...
Have set aside 60 nny cases I have used for the 20 Dot for this test and loaded all with CCI-BR2 primers. COAL set @ 2.823. This will be their 5th reload.


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Old December 31st, 2016, 06:46 PM   #9
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Quote:
Originally Posted by Bill3508 View Post
You'll see more deviation from the brass than you will from a .2 charge difference.
Thanks Bill3508!
I am a believer... I shot 60 rounds of weighed charges (on a PACT digital scale) today and saw no reason to go away from my throwers for my rifles loads... I used ALL nny brass today that I weight sorted into a 160/169gr weight range for my test.. I did not notice any group change weighing the charges vs throwing them from my load book...
And the best crono results did not match my shot groups...
I am the limiting factor here for sure.
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Old December 31st, 2016, 09:35 PM   #10
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At what distance are you shooting for groups? Generally speaking, when I'm performing a ladder test (I load in .2gr increments), I'll do it at 200 yards. In my experience, I've found that lots of loads shoot well at 100 yards or less; it's once you stretch their legs a bit that they start wandering around. Once the shots start to cluster on paper, I'll take the 3-5 tightest impacts and then find the average powder charge among them...that'll be my "go-to" powder charge. After that, I start playing around with seating depth, etc.

For all rifle loads (except plinking stuff for .223) I throw an initial charge with a Lee "Perfect Powder Measure" that's set to .5-.7gr below final charge weight. Then, I trickle each charge to where I want it to be. Whether or not I shoot well enough to see the difference remains to be seen, but I don't want any doubt in my mind if the problems is see on paper are my fault or not (and they usually are).

A good thing about the Lee powder measures, is that they're cheap. I pretty much buy one for each load and leave it set up. I mount them to a small piece of 1x4 and then clamp them to the bench as needed.

-WRM

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Old January 1st, 2017, 06:50 AM   #11
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Quote:
Originally Posted by lumpy grits View Post
The biggest asset to accuracy is to have minimum bullet run-out(.003" T.I.R. or less)
Have you ever checked the run-out on your ammo after it has been chambered? Be interesting to see what it measures after slamming into the feed ramp.

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Old January 1st, 2017, 12:14 PM   #12
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Quote:
Originally Posted by WRMorrison View Post
At what distance are you shooting for groups? Generally speaking, when I'm performing a ladder test (I load in .2gr increments), I'll do it at 200 yards. In my experience, I've found that lots of loads shoot well at 100 yards or less; it's once you stretch their legs a bit that they start wandering around. Once the shots start to cluster on paper, I'll take the 3-5 tightest impacts and then find the average powder charge among them...that'll be my "go-to" powder charge. After that, I start playing around with seating depth, etc.

For all rifle loads (except plinking stuff for .223) I throw an initial charge with a Lee "Perfect Powder Measure" that's set to .5-.7gr below final charge weight. Then, I trickle each charge to where I want it to be. Whether or not I shoot well enough to see the difference remains to be seen, but I don't want any doubt in my mind if the problems is see on paper are my fault or not (and they usually are).

A good thing about the Lee powder measures, is that they're cheap. I pretty much buy one for each load and leave it set up. I mount them to a small piece of 1x4 and then clamp them to the bench as needed.

-WRM
Thanks WRMorrison,

That was an 'oops' on my part... That range there measures 103 meters and the other I may use measures 100 meters... I call it 100 meters and always load 5 rounds in a ten round magazine for my groups...
I have Redding and RCBS throwers here.
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Old January 1st, 2017, 12:17 PM   #13
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Quote:
Originally Posted by Samuel Seeley View Post
Have you ever checked the run-out on your ammo after it has been chambered? Be interesting to see what it measures after slamming into the feed ramp.
Thanks Samuel Seeley. No, I am not to that stage yet but have been giving it some thought; think better optics and a better cheek riser will help as well.
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Old January 1st, 2017, 12:45 PM   #14
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Nice reloading setup you have there. I like Redding powder measures,too-seem more accurate to me.

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Old January 1st, 2017, 12:52 PM   #15
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Quote:
Originally Posted by boomerpusher View Post
Nice reloading setup you have there. I like Redding powder measures,too-seem more accurate to me.
Yes, I much prefer them... Started with Lee then RCBS and now Redding benchrest for sure

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