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Picture of Snake Reaper
posted
When working up loads how much does everyone increase there powder. In increments of what. tenth , half or whole grain incrments. Starting at minimium and working till most accurate or presure signs or hitting book max i know. But how fast does everyone work up when going by book ? For.example a 6.5 creed using a 140 grain sst and h4350 starts at 35.6 then 37.6 then 39.6 , 40 .5 then max 41.5. by the 10th edition hornady book . Or does everyone start at min and go by 10th or half grain. Just looking for more experience than what i have. Just really getting back into rifle cal. I kniw once hi hit accurate load for the rifle at had u work by 10ths back and forth to find most accurate . Just looking for best way and safest way everyone starts.
 
Posts: 167 | Location: Georgia | Registered: January 30, 2010Reply With QuoteReport This Post



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I usually work in half grain increments till it shows promise then tweak from there ,couple of tenth either way.I look to accuracy first, at a speed I can live with,not trying to get that last tenth of an inch or fps.
 
Posts: 325 | Location: bourbon capitol KY. | Registered: November 23, 2010Reply With QuoteReport This Post






Picture of Magnum Mike
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If my load work is just to find a maximum charge, it all depends on the case size/powder volume. For a real small case like the 22 CCM, I worked up in .1 grains. For cases the size of 221FB - 223 Rem/5.56 I'd work up in .2-.3 range. Once I get beyond that I'd do .5 and for the big magnums I've gone 1 grain.


mike
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Posts: 19249 | Location: western PA, USA! | Registered: October 30, 2003Reply With QuoteReport This Post



Picture of Smokin7mm
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Pretty much what Magnum Mike said. It is about % of increase for the case size. If you have a case that only holds 10 grains and you increase 1gr at a time, each grain is 10%. If the case holds 100 grains and you increase 1gr at a time it is only a 1% increase. The smaller the case the smaller the increments.

Bret


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Posts: 1582 | Location: Washington | Registered: January 08, 2009Reply With QuoteReport This Post



Picture of big10
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It depends on the load range. Some data only allows 2 grains or less min to max and some is much wider. I divide the total range in to 8 steps and then start in the middle. I have never had best accuracy in the lower half of the load range. Usually best accuracy comes @ 75% or higher. Once I get two steps that are showing promise I will split the difference to see if it improves and then again if necessary.


thumbup Rod
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It's not a break, it's a brake, unless it's a break, then it's broke ;-)
 
Posts: 6431 | Location: Northern MN | Registered: February 17, 2006Reply With QuoteReport This Post



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I usually use a 5 step increment from start to max.
5.5-7.5gn, I would use 5.5, 5.9, 6.3, 6.7, 7.1gn, and go above if there was a reason to.
For 47.8-55.6, I would go 47.8, 49.3, 50.8, 52.3, 53.8 and go on up if there are no pressure signs.
I may only fire one or two rounds each, but I have been bitten before where just the mid-range load was already a max load in my gun with that bullet and lot of powder, so I approach MAX cautiously. In fact, once with a .44 Rem Mag and once with a 9x19, the START load was MAX or over-max with my gun and components, so I also always check multiple manuals.
 
Posts: 24 | Location: arizona | Registered: December 31, 2014Reply With QuoteReport This Post



Picture of big10
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quote:
In fact, once with a .44 Rem Mag and once with a 9x19, the START load was MAX or over-max with my gun and components, so I also always check multiple manuals.


What indicators are you relying on to determine MAX in your guns? You must be scared to death of shooting factory ammo......


thumbup Rod
------------------------------
It's not a break, it's a brake, unless it's a break, then it's broke ;-)
 
Posts: 6431 | Location: Northern MN | Registered: February 17, 2006Reply With QuoteReport This Post
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