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#3177848 - 02/27/13 09:38 AM Another 300 WSM Quest
gtk Moderator
8 Point


Registered: 01/26/01
Posts: 2468
Loc: Mississippi

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Since I can actually seem to get responses here, I have another question about "working up a load". While I'm not new to reloading, I am new to starting a load from scratch.

background. I'm going elk hunting for the 1st time this October, so I picked up a Ruger 300 M77 Mark II 300 wsm. Since shells seem to average around $50 a pop, I got some free hulls & a set of dies.

I researched bullets & narrowed it down to Barnes TSX 165 grain which several people have said shoots good out of their rugers. Nosler Accubond was a close second. 180 grain bullets had mixed results. Some shot good, others didn't, but 165 was pretty consistently accurate and very capable of taking Elk sized animals.

I already had some IMR 4350, which is supposed to be a good Short Mag powder.

Now to the questions. How do "you" go about working up loads? Do you start at min? Start in the middle? Do you move up in 1/2 grain increments? i'm not one of those who believe I must shoot max.

The min-max listed on barnes site for this bullet is 61.0 min, and 68.0 max (compressed with 108% case capacity).

Thanks !
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#3177867 - 02/27/13 09:57 AM Re: Another 300 WSM Quest [Re: gtk]
KPH
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Registered: 08/06/05
Posts: 3156
Loc: Hendersonville Tenn

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I would advise to start at the bottom and work up. Now that being said I normaly start in the middle and work up, it just seems to work out for me. 1/2 grs is about right.
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#3177912 - 02/27/13 10:34 AM Re: Another 300 WSM Quest [Re: KPH]
EastTNHunter
10 Point


Registered: 03/08/10
Posts: 2629
Loc: Rhea Co., TN

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Rule of thumb is to start off 10% off max and work up, looking for pressure signs.
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#3177914 - 02/27/13 10:35 AM Re: Another 300 WSM Quest [Re: KPH]
Deer Assassin
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Registered: 08/01/03
Posts: 85522
Loc: Kingston Springs

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i start 3 grains be low max and work up if .5 grain increments till the last grain before max the i do it in .2 grains


in your case

65 65.5 66 66.5 67

67.2 67.4 .6 .8 68
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#3178040 - 02/27/13 12:09 PM Re: Another 300 WSM Quest [Re: Deer Assassin]
WGK
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Registered: 02/18/12
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Loc: loudon

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Goof advice from all. I start 2 grains below Max.
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#3178096 - 02/27/13 01:10 PM Re: Another 300 WSM Quest [Re: WGK]
mr.big
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Registered: 01/03/01
Posts: 28414
Loc: Copper Head Road

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I start 10% off book max and load one round in one grain increments until I see pressure,from this I try and figure what the max safe load will be which is usually 2-3% below where I can see pressure,,

then with the max safe load I shoot for accuracy and work down,,I like the fastest load I can get that is accurate and this process seems to get me to that load using the least amount of components,,

68 grs is listed as max in your example,,I would load one round at 61,62,63,64,65,66,67,68,69,70,71,,

I would shoot those looking closely at the fired brass and bolt lift ,primers and everything,,take it slow and shoot each round with cold barrel for consistant test data,

the first round that showed me excess pressure or velocity spikes I would stop and back down 2-3 grains and start trying for accuracy..
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#3178120 - 02/27/13 01:35 PM Re: Another 300 WSM Quest [Re: mr.big]
gtk Moderator
8 Point


Registered: 01/26/01
Posts: 2468
Loc: Mississippi

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very good info... keep it coming \:\)

mr.big. Why do I "want" to shoot until I see pressure signs? Just get get max velocity ? Wouldn't I just want to stop once I got good groups? Shooting till I see pressure dangers, scares me, but remember, I'm new to this \:\)

One person suggested to test for pressure increases, I need to measure the base of the shell, and once I see increases of .003 to back off (that number may be wrong, as its off the top of my head)


I was going to load up about 5 rounds in each increment, seeing what shot best. Once I got a good group, stick with it \:\)

Again, thx for the comments.
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#3178153 - 02/27/13 02:07 PM Re: Another 300 WSM Quest [Re: gtk]
mr.big
Non-Typical


Registered: 01/03/01
Posts: 28414
Loc: Copper Head Road

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if you are happy with just accuracy by all means just start at 62 or so and shoot groups until you get the results you want,,sometimes you will run into pressure before you get accuracy or reach book max loads though,,

thats when you reach for a different powder or bullet,,
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#3178185 - 02/27/13 02:31 PM Re: Another 300 WSM Quest [Re: mr.big]
gtk Moderator
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Registered: 01/26/01
Posts: 2468
Loc: Mississippi

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Well, i am happy with accuracy, but do you get better bullet performance the faster you push it? What are teh reasons to load for max..
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#3178192 - 02/27/13 02:36 PM Re: Another 300 WSM Quest [Re: gtk]
gtk Moderator
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Registered: 01/26/01
Posts: 2468
Loc: Mississippi

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OAL question..

Are the benefits of sizing your rifles shells to "just off lands" really that beneficial, or will the books published "max OAL" suffice ? A good "load" for me would be a 2" to 2.5" group at 200 yards.. I think that would suffice to kill an elk ..
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