6.5-300: H1000 or 8133 loads for 127LRX (or similar mono)?

SilverbulletMAG

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Searched the interwebs and didn't find much info regarding real world load data for this rifle (Accumark V) using temp stable powders (i.e. H1000/IMR8133). US869 is the speed king but, the temp instability and horrible ES/SDs have shown me it's time set that one aside and stop killing my barrel on a powder I'm done with.

In an effort to save some barrel life (pretty sure I've smoked half the life on this barrel in load development alone), does anyone have a solid load for the 127 LRX using H1000 and/or 8133 I can use for reference? I have looked at Hodgdons load data for their recommended max loads, hoping for real world reports though...
 

Capt RB

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Do a ladder test with both and you will get your answer
 

SilverbulletMAG

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Do a ladder test with both and you will get your answer
Thank you for the insight Capt Obvious.;) Again, hoping for real world data from folks that have already tested this bullet/powder combo. It's a little different doing load development on a huge barrel burner vs. a 308...
 

Mallardhammer

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I won’t be with my notes for about 10 days, I’ll try and remember to post to this thread or PM you. I tried all three plus retumbo. I do remember that us869 gave best speed at 3390 and ES of 12 in my vanguard.
 

highdrum

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I'd personally start with a low charge of desired powder. With that light of a bullet with that big a case, H1000/IMR7977/N565 area is probab a good start at the 70-72gr area. Start off with a low charge, establish your seating depth first with 2 shot pairs till you get 2 very close, and shoot a 3rd to confirm. Once you have a known seating depth node, work your powder up in 0.3-0.4 grain steps. You'll find something the rifle likes. Retumbo/8133 are viable options.
 

smokey3

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I hate hearing that the US869 did not work out. I just bought a Vanguard and 8lbs of that powder this summer. I couldn't find the other powders at that time, although 8133 and RL33 have shown up recently. Weatherby has a link to some reloading data on their website that shows a little hotter loads than what Barnes or Hornady show on their reloading data. I think it was published by Handloader magazine. Here's the link, interesting article. He had varying results with several powders. https://weatherby.com/wp-content/uploads/2019/05/65300_Loads.pdf
 
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bsnyder

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Us869 worked fine with the 127 for me I had it at 3400 and change. I switched bullets and powder. Accuracy was 3/4 In at 100 but anything of 80 and over 400 yards I saw inconsistent results. All depends on application on which you wish to use.
 

SilverbulletMAG

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Bsnyder, those are my results as well with 869. 3448fps net the best 3 shot groups of 3/4" at 100 yards. ES between 40-50 and SD 30+... all with sound reloading procedures and high end equipment. Beyond a couple hundred yards, it's a shotgun. Going to work up to the suggested loads with 8133 as I have 8lbs on hand and like the temp stability.
 

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