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Working up loads |
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Wing master
Administrator AKA StraightShooter Joined: 10 June 2003 Location: United States Status: Offline Points: 7481 |
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Posted: 22 February 2021 at 00:03 |
I'm revisiting my truck gun and working up a load with a heavier bullet.
My question is, When you find a load that looks promising and start fine tuning it how much do you change the powder charge in each step? I have always went .5 grains but it was suggested to me to go .3 grains. What do you do? I don't want to make too big of jumps and get bad feedback. Wing master
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I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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d4570
.416 Rigby Joined: 27 January 2004 Location: United States Status: Offline Points: 9403 |
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The boy goes .5 at a time till he gets close to what he wants then .3 or .2
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Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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>5 because powder is scarce.
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“ The IQ and the life expectancy of the average American recently passed each other in opposite directions.”
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Wing master
Administrator AKA StraightShooter Joined: 10 June 2003 Location: United States Status: Offline Points: 7481 |
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Thanks guys.
I'm going to be loading my next test loads today. I found a really promising load and after I settle on a powder charge I'll start with seating depth. How big of changes in seating depth do you make at this point? How far from the lands do you usually find the best accuracy? Wing master
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I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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d4570
.416 Rigby Joined: 27 January 2004 Location: United States Status: Offline Points: 9403 |
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It depends on the bullet type.
Barnes should be kept away from the lands.
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Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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I start at .005 and work away at .005 increments. 5 shots with each step.
Remember as you seat further off the lands, you are seating deeper into yur powder capacity. and that makes small changes in your accurate powder loadings.
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“ The IQ and the life expectancy of the average American recently passed each other in opposite directions.”
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Wing master
Administrator AKA StraightShooter Joined: 10 June 2003 Location: United States Status: Offline Points: 7481 |
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D4570
These are Sierra bullets. I remember us talking about Barnes. I have had good luck with Sierras loaded close to the lands but I have read a lot of people have different results. Wing master
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I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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Wing master
Administrator AKA StraightShooter Joined: 10 June 2003 Location: United States Status: Offline Points: 7481 |
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Good point Bear.
That's how I've done it in the past. So far with this load I have loaded them to what the book calls for. I'm sure they are a ways from the lands but I don't have a modified case for .223 to check that. I thought I would start there and do like with powder charge and start going closer to the lands and see what happens. I can get a modified case if I need to but I thought I would try that first. I guess if it doesn't help I can always seat them deeper and see what happens. Am I thinking right? Wing master
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I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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You can get a black marker and coat the front of a loaded (LONG) cartridge. Chamber the round and the lands/grooves will scratch the bullet. then back of the die till no marks show. that is the zero range from which to measure the back oof.
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“ The IQ and the life expectancy of the average American recently passed each other in opposite directions.”
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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this works for all bullets and cartridges.
Been usuing one for 20 years. could easily make one. rod with two drill stops.
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“ The IQ and the life expectancy of the average American recently passed each other in opposite directions.”
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Wing master
Administrator AKA StraightShooter Joined: 10 June 2003 Location: United States Status: Offline Points: 7481 |
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I have a Stoney Point OAL gauge. I think it is a similar design. The thing is it uses an empty case with the base drilled and threaded to fit onto the tool. I just ordered a drill bit and odd sized tap so I can make my own modified cases from now on.
Wing master
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I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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lizard
.30/06 SpringField Joined: 17 February 2016 Location: United States Status: Offline Points: 301 |
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Wing, If I remember right, Hornady bought out Stoney Point, and the rights to that tool.
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Trigger Control is knowing when not to pull it.
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BEAR
Administrator Joined: 07 September 2013 Location: Appalachian Mtn Status: Offline Points: 13734 |
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Actually the Stoney point is simple and doesn't need those modified cartridges. You drop a sized or loadded catridge into the chamber, and measure to the hase head. then remove and drop a bullet into the chamber and measure how far it goes in. that lets you calculate the case COL to hit the bore for that bullet.
The stoney point seems to JAMthe bullet into the lands to cause the bullet to move back in the case. I think some subtraction is needed to compensate for the engraving by the 'jam'.
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“ The IQ and the life expectancy of the average American recently passed each other in opposite directions.”
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