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Accurate Loads

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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 20:08
I have the standard weatherby freebore, so I should me somewhere in the neighborhood of a mile or so from the lands. The only way I could seat to the lands that I've found so far is with a 200 gr. accubond seated WAY out. There is no way I can even get close and have them fit in the magazine.

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sakomato View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sakomato Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 20:20
Then, IMO, you should look to other avenues besides seating depth to significantly reduce groups size.  But, nothing is written in stone, every rifle is an individual.
 
Is your action bedded?
 
What load are you shooting?
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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 20:22
Shooting 180gr. Sierra gameking on top of 85.2 gr. IMR 7828ssc in a Wby case. Winchester wlrm primer. Velocity is running about 3175.

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sakomato View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sakomato Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 20:28
Man!  That ought to be a great load!
 
Can you post pics of your ladder work up?
 
Do you have any Fed215 primers? (I could send you some)
 
Does your rifle have a pressure point on the tip of the forearm?
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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 20:33
I'll see if I can get the targets rounded up, and put on here somewhere. I do have some Fed 215's. Rifle is  Weatherby accumark. Factory pillar bedded with aluminum bedding block. #3 contour fluted barrel. Floated.
 
I may have had an error in the bottom part of my OCW development, but the upper end loads were ok. This is where I ended up seeing some potential, so I kept those targets.


Edited by trigger29 - October/19/2009 at 20:34

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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 20:51
In my workup, it seemed odd to me that some charge weights hit much higher, lower, or left, or right than the others. It seems to me that there shouldn't be a huge shift in the point of impact, but I'm still learning about all this reloading stuff.

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sakomato View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sakomato Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 21:13
There will be a difference in POI with the different loads.  If nothing else, as your velocity increases your group should move up on the target.  Not too noticeable at 100 yards but very noticeable at long range.  That is the reason that an Audette climbs up the target, the increase in velocity.
 
It is all about barrel timing.  Bullets leaving the muzzle microseconds after others are going to hit in a slightly different place.  Seating depth, variations in bullet grip, case capacity, charge weight variations and velocity will affect your barrel timing.
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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 21:21
Ok, here is what I have left of the workup.
Starting with 84.5 gr. This group I think got mixed up with a round from a different lot or something. Either that or something made it a HUGe flyer. The third hole is the one straight down. Not really sure what happened there.
85.0 gr. Unfortunately, I wasn't very centered on the target, but once I started, I didn't want to make an adjustment, and mess myself up.
85.5
I then repeated the test with 85.2 85.5, and 85.7 to see if one way or another improved things. I adjusted the scope to hit the correct target too! I seem to be missing the 85.7, but one hole was on either side of the aiming dot, and the other one flew way high, and right. Not really sure what caused it. The other two didn't show huge promise.
85.2
85.5
 
Any ideas? I like this load, but it needs to shoot much better.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote sakomato Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 22:13
Not too terrible.
 
Do you neck size with the Lee Collet Neck Sizer?  That die can make an improvement in accuracy and they are economical.
 
I would try some loads with the Fed215's and see but I would start back down at 84 grains since 84.5 gr is the listed max in the Nosler #5 manual and the Fed215 may slightly increase pressure.  That would be the first change and it might do the trick.  Then you could try another bullet, Nosler Ballistic Tips are inexpensive and generally very accurate.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dale Clifford Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 22:14
Originally posted by sakomato sakomato wrote:

There will be a difference in POI with the different loads.  If nothing else, as your velocity increases your group should move up on the target.  Not too noticeable at 100 yards but very noticeable at long range.  That is the reason that an Audette climbs up the target, the increase in velocity.
 
It is all about barrel timing.  Bullets leaving the muzzle microseconds after others are going to hit in a slightly different place.  Seating depth, variations in bullet grip, case capacity, charge weight variations and velocity will affect your barrel timing.
concerning reloading-- in pistols faster loads shoot lower, as the recoil has less time to act on the barrel
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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 22:26
Originally posted by sakomato sakomato wrote:

Not too terrible.
 
Do you neck size with the Lee Collet Neck Sizer?  That die can make an improvement in accuracy and they are economical.
 
I would try some loads with the Fed215's and see but I would start back down at 84 grains since 84.5 gr is the listed max in the Nosler #5 manual and the Fed215 may slightly increase pressure.  That would be the first change and it might do the trick.  Then you could try another bullet, Nosler Ballistic Tips are inexpensive and generally very accurate.
I used the collet neck sizer for these. They were full lenght sized in the redding body die though. Haven't tried them fireformed yet. I will try backing down, and trying the fed. primers. I have a lee factory crimp die also, but thought I'd try to see how they shoot without crimping them, and then see if crimping helps. The groups are not TERRIBLE, but I'm not satisfied either.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote sakomato Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 22:39
So these were new cases?  Everything changes with once fired as compared to new cases.
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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 22:41
They were once fired cases from factory loads that I bought off gunbroker. Therefore I full lenght sized them, in the redding body die, and neck sized them with the lee collet.

Edited by trigger29 - October/19/2009 at 22:41

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Post Options Post Options   Thanks (0) Thanks(0)   Quote sakomato Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 22:45
Then you will probably get a change if you just neck size them.  As long as the unsized fire formed case is easy to chamber, then just neck size them with the Lee Collet.  It should take a couple of firings before they become tight in the chamber and you have to use the Body Die.
 
That along with the Fed215's will cause enough of a change that the groups may improve.  They might get worse but chances are they will get slightly better.
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trigger29 View Drop Down
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X = 180 Y = 90 (X+Pyro)+(Y-Pyro) = ?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote trigger29 Quote  Post ReplyReply Direct Link To This Post Posted: October/19/2009 at 22:50

Sweet! I don't need them to be in one hole, but I would like to improve them some. I'm wondering if I should put a light crimp on them too. I think I'll try some just neck sized, and  some with the federal primer. I want to do those seperate, in case one works and one doesn't. Then I might try a set with a light crimp on them.


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