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Donut Slayer Super Member
Joined: Jun 27, 2007 Posts: 594 Location: Pensacola, Florida
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Posted: Mon Aug 20, 2012 7:00 am Post subject: I may be getting close..... |
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To finding my actual hunting load this year. Here's the closest so far.
270 WSM
135 SMK (sierra match king)
IMR4350 58.0gr
WLRM primer
RP case.
100 yards:
_________________ Browning X-Bolt in 30'06. The work for a pet load starts again. The more people I meet, the more I like my dog. |
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Donut Slayer Super Member
Joined: Jun 27, 2007 Posts: 594 Location: Pensacola, Florida
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Posted: Mon Aug 20, 2012 7:13 am Post subject: Re: I may be getting close..... |
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The only "problem" I had with the above load is, its .7 grains lower than the recommended starting load from sierra. They recommend 58.7 starting load. The "problem" I had was on 2 of the rounds, I got powder residue around the primer. My assumption is there wasnt enough pressure to "seal" the case to the primer upon ignition. The 3rd case looked fine. These were RP cases, once fired, trimmed to length. Same cases, same lot# showed NO leakage as powder charges went up to 60.0 grs as a max is 62.7. Primers were Winchester Large Rifle Magnums. Now, I have read on the internet that winchester had some LR primers that were .0005 undersize. (you can believe everything you read on the web ). I miked the primer pocket, they all were .209". I'm going to assume leakage was due to a light charge and bump up the starting charge accordingly. Any other thoughts? Oh, I am going to mark the 2 cases with a magic marker to see if they leak again.
_________________ Browning X-Bolt in 30'06. The work for a pet load starts again. The more people I meet, the more I like my dog. |
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Donut Slayer Super Member
Joined: Jun 27, 2007 Posts: 594 Location: Pensacola, Florida
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11390 Location: Ava, Missouri
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Posted: Mon Aug 20, 2012 7:51 am Post subject: Re: I may be getting close..... |
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First...Why a "match King" and not a "Game King" bullet?
Second...I have never "miked" any primer pockets. I have always gone with how it felt when I seated the primer. If it slid in like it was greased then I discarded the case after removing the primer. If you felt a bit of a tug when you seated the primer all is good. However, if you had soot around the primer after firing then I would look for some other problem. If it was an under sized primer you would have felt it [or not] when you seated it. It's posible that one or two cases had a shoulder pushed back when resizing or the bullet was jamed [hard] up against the rifling leeds. Usually a sooty primer indicates an over pressure problem.
Third...If indoubt as to the quality or condition of the two offending cases...Just toss them.
_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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Donut Slayer Super Member
Joined: Jun 27, 2007 Posts: 594 Location: Pensacola, Florida
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Ominivision1 Super Member
Joined: Sep 20, 2010 Posts: 2984 Location: Iowa
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Posted: Mon Aug 20, 2012 8:05 am Post subject: Re: I may be getting close..... |
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I agree, match kings are not designed for game animals only for targets. Its possible that the load was under pressure, how were the necks? Any sign of carbon around the neck? Get the bullet your going to be using for the game your hunting and work up the loads.
_________________ Regards
Limitations are but boundaries created inside our minds. |
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Donut Slayer Super Member
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11390 Location: Ava, Missouri
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Posted: Mon Aug 20, 2012 8:23 am Post subject: Re: I may be getting close..... |
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A sooty neck is normal.
A quick premer on cartridge movement in the chamber when the firing pin hits the primer. 1. pin strike and the case moves forward. 2. Powder ignites and the primer backs out a bit. 3. Pressure builds and the case SLAMS back against the bolt face and reseats the primer sometimes smashing it. 4. Case expands to grip the chamber wall. 5. Bullet exits the case mouth. 6. Case relaxes for extraction from the chamber.
This may help in diagnosing your problem...Maybe.
_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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Ominivision1 Super Member
Joined: Sep 20, 2010 Posts: 2984 Location: Iowa
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Posted: Mon Aug 20, 2012 9:14 am Post subject: Re: I may be getting close..... |
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When I shoot H380 out of my 22 250 the necks are badly "sooted". It's not a dimensional issue with my rifle and casess since when I shoot Varget or IMR 4350 there is considerably less soot. In my case it's the nature of the powder.
I twist some 000 steel wool around the neck a few time then place in the tumble or US and they come out clean. If these cases have been fired alot of times it could be that they might need annealing.
If these are new cases, go ahead and shoot em and maybe up the powder charge a wee bit at a time. Have you run these loads across a chrony?
_________________ Regards
Limitations are but boundaries created inside our minds. |
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Donut Slayer Super Member
Joined: Jun 27, 2007 Posts: 594 Location: Pensacola, Florida
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stovepipe Super Member
Joined: Sep 25, 2008 Posts: 4877 Location: Pine, Az.
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Posted: Mon Aug 20, 2012 1:01 pm Post subject: Re: I may be getting close..... |
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Cabron or grit in the pocket, poorly seated cap, cap or case anomily. Either way, pinch the neck and toss. If hi-pressure gas got by once it might do it again due to flame etching and that aint a case I'd use.
Nice group BTW! Keep it up!
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Donut Slayer Super Member
Joined: Jun 27, 2007 Posts: 594 Location: Pensacola, Florida
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stovepipe Super Member
Joined: Sep 25, 2008 Posts: 4877 Location: Pine, Az.
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Posted: Mon Aug 20, 2012 2:07 pm Post subject: Re: I may be getting close..... |
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Pinch that neck and give it the heave-ho!
Check yer bolt face for shmutz too.
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Donut Slayer Super Member
Joined: Jun 27, 2007 Posts: 594 Location: Pensacola, Florida
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stovepipe Super Member
Joined: Sep 25, 2008 Posts: 4877 Location: Pine, Az.
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Posted: Mon Aug 20, 2012 2:18 pm Post subject: Re: I may be getting close..... |
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Good to go, back to testing Mr. Man!
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