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Rifles, Reloading, Optics, Equipment
Reloading
**need help for hot summer load development**
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<blockquote data-quote="bigbuck" data-source="post: 399008" data-attributes="member: 18377"><p>Let me start by saying that last summer I had a sweet load of 86 grains of retumbo . my best group was 3 shots that you could cover up wuith a dime . Now i've read over and over how in order to be better off @ long range I need all the horsepower I can get so I decided to toss the load that i use to use and start over on the high side . The only thing thats different is I have installed a wyyat's extended box mag so I started with .010 off the lands . The powder charge is as follows.</p><p> </p><p>89.0 G retumbo .010 off the lands</p><p> </p><p>89.5 G retumbo .010 off the lands</p><p> </p><p>90.00 G retumbo .010 off the lands</p><p> </p><p>90.5 G retumbo .010 off the lands </p><p> </p><p>91.00 G retumbo .010 off the lands</p><p> </p><p>I also tried 89.5 g retumbo .020 off the lands , it was better but know were near my old favorite load ! </p><p> </p><p>Now my question to you all is this do you back down for the summer time temps ? If so what is the rule of thumb ? I would like a smokin hot small group load but it looks like i may have trouble finding it in these hot temps ( 90- 100 degrees ) . </p><p>I'm needing a group that will perform out to 1200 YRDS</p><p>Rifle is 300 RUM broughton heavy barrel DE break and recoil lug 210 Bergers 6.5X20X50 Lupy 30 mm tube . </p><p>What would you reccomend ? </p><p> </p><p>Thanks for any advice/help</p><p> </p><p>BigBuck</p></blockquote><p></p>
[QUOTE="bigbuck, post: 399008, member: 18377"] Let me start by saying that last summer I had a sweet load of 86 grains of retumbo . my best group was 3 shots that you could cover up wuith a dime . Now i've read over and over how in order to be better off @ long range I need all the horsepower I can get so I decided to toss the load that i use to use and start over on the high side . The only thing thats different is I have installed a wyyat's extended box mag so I started with .010 off the lands . The powder charge is as follows. 89.0 G retumbo .010 off the lands 89.5 G retumbo .010 off the lands 90.00 G retumbo .010 off the lands 90.5 G retumbo .010 off the lands 91.00 G retumbo .010 off the lands I also tried 89.5 g retumbo .020 off the lands , it was better but know were near my old favorite load ! Now my question to you all is this do you back down for the summer time temps ? If so what is the rule of thumb ? I would like a smokin hot small group load but it looks like i may have trouble finding it in these hot temps ( 90- 100 degrees ) . I'm needing a group that will perform out to 1200 YRDS Rifle is 300 RUM broughton heavy barrel DE break and recoil lug 210 Bergers 6.5X20X50 Lupy 30 mm tube . What would you reccomend ? Thanks for any advice/help BigBuck [/QUOTE]
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Reloading
**need help for hot summer load development**
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