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crazy2medic
.375 Holland & Holland Magnum Joined: 22 November 2005 Location: United States Status: Offline Points: 722 |
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Posted: 08 January 2015 at 06:16 |
I'm reloading for my 6mm-06, hodgdon just came out with new
powders, talked with them on the phone in regard to which would be my best bet, they advised that the slowest the IMR7977 would be my best choice for trying to push a 70gr. Bullet out the muzzle at 3800fps, here's the rub they couldn't help me with a starting charge, I'm currently using H4350 and 240 Weatherby data. Can anybody tell me if there is a formula for calculating a starting charge for a particular powder? |
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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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Crazy;
No such formula that I know of. I'm going to presume that you've looked at the Hodgdon on-line site, but what other sources have you checked? What manuals do you have? I'd think the .240 Weatherby data would be close, but I sure wouldn't take it as gospel. Way too many differences & variables apply. 900F |
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crazy2medic
.375 Holland & Holland Magnum Joined: 22 November 2005 Location: United States Status: Offline Points: 722 |
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I know I can use 240 weatherby starting charges, problem now is the
new powder doesn't even have that, IMR7977 is slightly faster than H1000 so guess I have more research ahead, thanks for your input and if anybody has additional info I would appreciate your help I have the new hodgdon 2015 reloading manual, Lyman reloading manual, hornady reloading manual Edited by crazy2medic |
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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I'd compare case capacity of water, first. find something in 6mm with the same, or slightly larger...then reduce it 10% for start.
There is was a POWLEY calculator/computer that let you calculate loads for known powders. But this is a new powder without any data? Powley needed things like barrel volume (easy to figure). Maybe you are rushing it, could use you reg powders until published data comes out? trying to work with unknown powder is sailing in uncharted waters. |
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crazy2medic
.375 Holland & Holland Magnum Joined: 22 November 2005 Location: United States Status: Offline Points: 722 |
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The case capacity of the 6mm-06 is a half a grain more than the 240
weatherby, which is why I'm using that has my starting data, I have 8lbs of H4350 and will probably use that for a bit, was just wanting to find out if there was a way to calculate a starting charge from two similar cartridges, hodgdon doesn't have any data for the 240 weatherby, they do for the 25-06 but the bullet weights are different and the case mouth is different, just too many variables for me to be comfortable! |
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CB900F
Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857 |
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Fella's;
A large part of the problem with starting, or reduced, loads, is that the lesser amount of powder filling the case can create it's own dangerous situation. It's been found that powder charges that fill the case burn one way, but if the reduced amount lies flat in the case, the flame front can travel over the charge rather than burn it from primer to neck. And that in turn can cause what amounts to an explosion in the case rather than a progressive burn. I'd be starting with known data before trying any experiments. KABOOMS are no fun, hard on guns and frequently very hard on flesh. 900F |
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Birth certificate!? He don't need no steenkink birth certificate!!
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Irish Bird Dog
.416 Rigby Too many Joined: 01 March 2009 Location: Midwest Status: Offline Points: 5511 |
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did not check these out but you might look thru them to
see if you can find any help with your questions. HIGH LIGHT THE LINK and then click in the box to open 6mm-06 - CHUCKHAWKS.COM www.chuckhawks.com/6mm-06.htm 6mm-284 data can be used as a starting point for working up 6mm-06 loads. As always, and especially with a wildcat cartridge, start with the minimum load and ... 6mm-06 build - Page 2 - Long Range Hunting Online Magazine www.longrangehunting.com › ... › Hunting › The Basics, Starting Out Jan 4, 2012 - 7 posts - 5 authors This comes from experience with the 6mm-06. You are opening a huge can of worms. Reloading data is hard to find. When you down size the ... 6mm-06 loads - PredatorMasters Forums www.predatormastersforums.com › ... › Hunting › Reloading & Ammo Jul 24, 2011 - 10 posts Posts: 420. Loc: Utah. You can use 6X284 data. The case capicity is almost exactly the same. Necking down 25-06 is the easiest way to go. 6mm06 Springfield load work 11 posts Dec 15, 2014 Let's talk 6mm-06 15 posts Sep 7, 2014 6.5x284 Norma Load Data Help 9 posts Dec 5, 2010 Need super rockchucker load data 15 posts Apr 12, 2005 More results from www.predatormastersforums.com 6mm-06 Wildcat - RifleShooter www.rifleshootermag.com/.../ammunition_rs_6mm06wildcat_20 0808/ Jan 4, 2011 - I am unaware of any pressure-tested load data that has been published for the 6mm-06, but since its case capacity is quite close to that of the ... 6mm-06 Load Data - LoadData.com https://www.loaddata.com/members/search_detail.cfm? MetallicID=436 LoadData.com is the largest resource online for reloading information and data for 6mm-06 Load Data loads. Information includes weight(Wt.), bullet, powder ... 6mm/06 Load data - Shooters Forum www.shootersforum.com › Rifle and Rifle Cartridges › Wildcat Cartridges Feb 18, 2009 - 9 posts I have a 6mm/06 on a Pre 64 Winchester 70. Only load data I have is in Ackley's books. too old for my tastes so I'd appreciate and data you can ... The 6mm/06 14 posts Nov 17, 2014 6mm-06 What are your thoughts? 20 posts Jan 20, 2010 6mm-06 / 243-06 / 240 Gib 20 posts Nov 6, 2003 6mm-06 4 posts Feb 19, 2002 More results from www.shootersforum.com Nosler Reloading Forum • View topic - 240 Weatherby or 6mm-06? forum.nosler.com/viewtopic.php?f=4&t=26142 Nov 18, 2013 - 25 posts - 12 authors The practical choice would be the 6mm-06 but how many of us are practical : .... Predicted data by increasing and decreasing the given charge, 243-06? - The Firing Line Forums thefiringline.com › ... › The Hide › The Art of the Rifle: General Nov 30, 2011 - 25 posts - 18 authors yes I just read a short article about 6mm 06 which was basically the ..... My 284 reloading data did come from the 6br site gun of the week and I ... 6mm-06, .243 Catbird? - Forum forum.accurateshooter.com › ... › 6mm-06, .243 Catbird? Jan 25, 2011 - 8 posts - 7 authors Another wildcat to consider is the 243 SuperRockChucker. I picked one up a couple of years ago. I used 240 Wby load data. I ran 25-06 brass ... Let's talk 6mm-06 15 posts Sep 7, 2014 6mm/06 & loving it!!! 12 posts Jun 16, 2014 Coverting 700 BDL 30-06 to 240/6mm 9 posts Nov 3, 2011 More results from forum.accurateshooter.com 6mm-06 loads - 24hourcampfire www.24hourcampfire.com › Forums › Reloading › Varmint Rifles Mar 27, 2010 - 10 posts #3939562 - 03/27/10 07:15 AM Re: 6mm-06 loads [Re: halfmile] ... Be Alert: Publisher cannot be responsible for errors in published load data. Searches related to 6mm-06 reloading data 6mm ppc reloading data 6mm remington reloading data 6mm 284 reloading data 9mm reloading data 7mm reloading data Edited by Irish Bird Dog |
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Irish Bird Dog
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crazy2medic
.375 Holland & Holland Magnum Joined: 22 November 2005 Location: United States Status: Offline Points: 722 |
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Thanks IBD, I was attempting to find a Starting load for hodgdon new
powder IMR7977, this is slightly faster than H1000, I found a load for an 80gr bullet using H1000, this would require me to reduce the starting charge by 5% for the difference in burn rate, and since I'll be using a 70gr.bullet I believe that should be correct, just not real comfortable with the idea of not having hard data! |
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