.300 RSAUM Load Development.

.300 RSAUM Load Development.

Postby R. Chapman » Thu Jun 26, 2014 6:09 pm

Starting off with powder charges as this is a hunting gun.

Specs:
Ruger M77 Mark II .300 RSAUM
Action bedded and barrel channel floated
Vortex Viper 2.5-10x44mm 30mm tube
40 pounds of torque on ring bases
25.5 pounds of torque on rings

Components:
Remington Brass
Hodgdon Varget
CCI 200 or Federal 210 Primer
Nosler 165 gr. AccuBond

COL is set at 2.880" for right now.
Powder charge in 1 grain increments:

53.5
54.5
55.5
56.5
57.5
5 foulers

Each charge increment will be 3 shots with each charge. Will post pictures of groups and results as followed.
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Re: .300 RSAUM Load Development.

Postby one2many » Thu Jun 26, 2014 6:12 pm

this should be good
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Thu Jun 26, 2014 7:17 pm

one2many wrote:this should be good

I await your criticism...
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Thu Jun 26, 2014 7:17 pm

Dun, dun, dunnnnnnnnnnn...
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Re: .300 RSAUM Load Development.

Postby Bootlipkiller » Thu Jun 26, 2014 7:29 pm

High and right
AKPirate wrote:The sins of Boot and Gaddy are causing the Cali drought and knowing they have no limits to their depravity... :mrgreen:
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Re: .300 RSAUM Load Development.

Postby one2many » Thu Jun 26, 2014 8:04 pm

R. Chapman wrote:
one2many wrote:this should be good

I await your criticism...

no criticism at all from me.i was just being supportive of you
No helicopter looking for a murder
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Even saw the lights of the Goodyear Blimp
And it read, "Jeffys a pimp"
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Re: .300 RSAUM Load Development.

Postby clampdaddy » Fri Jun 27, 2014 10:08 am

I normally load five of each in .3 (one ends up at .4) grain increments, the first two being used as foulers. Most times I'll find that the sweet spots are found in a very narrow margin between whole grain charge weights.
Last edited by clampdaddy on Fri Jun 27, 2014 10:12 am, edited 1 time in total.
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Fri Jun 27, 2014 10:11 am

clampdaddy wrote:I normally go in .3 grain increments. Most times I'll find that the sweet spots are found in a very narrow margin between whole grain charge weights.

All in one day?
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Re: .300 RSAUM Load Development.

Postby clampdaddy » Fri Jun 27, 2014 10:12 am

R. Chapman wrote:
clampdaddy wrote:I normally go in .3 grain increments. Most times I'll find that the sweet spots are found in a very narrow margin between whole grain charge weights.

All in one day?

Yep.
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Fri Jun 27, 2014 10:15 am

clampdaddy wrote:
R. Chapman wrote:
clampdaddy wrote:I normally go in .3 grain increments. Most times I'll find that the sweet spots are found in a very narrow margin between whole grain charge weights.

All in one day?

Yep.

Boy the shoulder would be feeling it, that's for sure.
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Re: .300 RSAUM Load Development.

Postby DeadEye_Dan » Fri Jun 27, 2014 12:31 pm

Lead sled. Period.
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Fri Jun 27, 2014 12:38 pm

Nope.
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Re: .300 RSAUM Load Development.

Postby Bootlipkiller » Fri Jun 27, 2014 12:55 pm

I developed many loads for Jennifer love Hewitt when I was Rex's age.
AKPirate wrote:The sins of Boot and Gaddy are causing the Cali drought and knowing they have no limits to their depravity... :mrgreen:
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Re: .300 RSAUM Load Development.

Postby clampdaddy » Fri Jun 27, 2014 2:39 pm

DeadEye_Dan wrote:Lead sled. Period.

Never tried one. Sure wished I had one when testing shotgun slugs though.
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Re: .300 RSAUM Load Development.

Postby DeadEye_Dan » Fri Jun 27, 2014 3:38 pm

I've been known to use a lead sled and a remote firing device when testing loads.
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Re: .300 RSAUM Load Development.

Postby one2many » Fri Jun 27, 2014 3:50 pm

DeadEye_Dan wrote:I've been known to use a lead sled and a remote firing device when testing loads.

packing them cases full with powder are we ? :D
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Re: .300 RSAUM Load Development.

Postby DeadEye_Dan » Fri Jun 27, 2014 4:10 pm

Not so much that, as removing all the human error from the equation.
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Re: .300 RSAUM Load Development.

Postby one2many » Fri Jun 27, 2014 4:12 pm

DeadEye_Dan wrote:Not so much that, as removing all the human error from the equation.

understand that!
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Sat Jun 28, 2014 12:41 pm

ImageUploadedByTapatalk1403977251.163163.jpg

ImageUploadedByTapatalk1403977260.210473.jpg
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Re: .300 RSAUM Load Development.

Postby Redbeard » Sat Jun 28, 2014 1:30 pm

Well
gila-river wrote:Great, now the cops want to install dishwashers to. Just do your job Red and stop encroaching on our rights to replace appliances. That is not the responsibility of police.:lol:
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Re: .300 RSAUM Load Development.

Postby Bootlipkiller » Sat Jun 28, 2014 1:33 pm

High and to the right
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Sat Jun 28, 2014 1:41 pm

ImageUploadedByTapatalk1403980795.378487.jpg

ImageUploadedByTapatalk1403980804.022286.jpg

56.5 did the best. Now I'm going to try in 2.5 gr. increments like this.

56

56.25

56.5

One of these is most likely to produce the best powder charge.
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Re: .300 RSAUM Load Development.

Postby Tiler_J » Sat Jun 28, 2014 2:01 pm

Bootlipkiller wrote:I developed many loads for Jennifer love Hewitt when I was Rex's age.

Haha! You say it like you have stopped! Haha!
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Re: .300 RSAUM Load Development.

Postby clampdaddy » Sat Jun 28, 2014 3:35 pm

Looks like you got a real shooter there. :thumbsup:

If you want any easy way to make targets on the cheap, get yourself one of those jumbo bingo card markers and a stack of regular ol' printer paper. You can blot as many spots as you want in a matter of seconds and they make nice round spots. They last a long time too. :thumbsup:
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Re: .300 RSAUM Load Development.

Postby sws002 » Sat Jun 28, 2014 4:16 pm

You should draw your circles closer to the holes...
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Sat Jun 28, 2014 8:55 pm

clampdaddy wrote:Looks like you got a real shooter there. :thumbsup:

If you want any easy way to make targets on the cheap, get yourself one of those jumbo bingo card markers and a stack of regular ol' printer paper. You can blot as many spots as you want in a matter of seconds and they make nice round spots. They last a long time too. :thumbsup:

Thanks for the advice. I wish I had a hair bit more of magnification so I don't have to make the circles as big as they are.
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Re: .300 RSAUM Load Development.

Postby Flightstopper » Sat Jun 28, 2014 8:57 pm

How far you shooting here Rex?
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Re: .300 RSAUM Load Development.

Postby R. Chapman » Sat Jun 28, 2014 8:57 pm

100
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Re: .300 RSAUM Load Development.

Postby clampdaddy » Sun Jun 29, 2014 1:29 am

R. Chapman wrote:
clampdaddy wrote:Looks like you got a real shooter there. :thumbsup:

If you want any easy way to make targets on the cheap, get yourself one of those jumbo bingo card markers and a stack of regular ol' printer paper. You can blot as many spots as you want in a matter of seconds and they make nice round spots. They last a long time too. :thumbsup:

Thanks for the advice. I wish I had a hair bit more of magnification so I don't have to make the circles as big as they are.

When you're shooting for group size, if your cross hairs cover up more area than you like and it's making you want to go to a bigger dot just aim low left or low right so the dot is nestled in the corner of where the cross hairs intersect. Make the bottom and one side of the bull just kiss the wires. I use a similar technique when shooting the iron sighted military bolt action match. For me, the best way to get the most precise and repeatable sight picture is to put the blade along the left side of the target and put the corner of the blade at 9 o clock on the black.
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Re: .300 RSAUM Load Development.

Postby 3200 Man » Mon Jun 30, 2014 12:27 pm

X2 clamp ! I guess it's the way we do it here ? I do know the curly-hairs part , with every shot !
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