308 RL15 (powder) 150gr Fmjbt using LCLR brass

Anyone use RL15 powder with LC brass and 150gr Hornady Fmjbt bullet? If someone who uses this recipe I'd greatly appreciate a idea where to start. I DO have load data from Hornady and Alliant, but LC brass has a different capacity then standard 308 brass. BTW AR-10 platform.

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I don’t use the same exact recipe but I have tested the crap out of 165gr sst with LC brass and RL 15 in my armalite AR10. I think what I’ve done with my combination will be a good starting place for you with the 150’s. In the Hornady book after 308 Winchester loads is a section for 308 service rifle loads. They are reduced from the standard 308 loads. I use the 168gr data for my 165gr, you could use the 155gr data for your 150gr. I have found that I reach my pressure limit at the max loads listed in the service rifle section, with varget and rl15.


JTD

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Originally Posted by JeffreyDeGraff

I don’t use the same exact recipe but I have tested the crap out of 165gr sst with LC brass and RL 15 in my armalite AR10. I think what I’ve done with my combination will be a good starting place for you with the 150’s. In the Hornady book after 308 Winchester loads is a section for 308 service rifle loads. They are reduced from the standard 308 loads. I use the 168gr data for my 165gr, you could use the 155gr data for your 150gr. I have found that I reach my pressure limit at the max loads listed in the service rifle section, with varget and rl15.


JTD

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I'm at work now but could you share what the 155gr data is with RL15 and varget for service 308?

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Here you go. https://uploads.tapatalk-cdn.com/202...bd48af6111.jpg


JTD

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Originally Posted by JeffreyDeGraff

Here you go. https://uploads.tapatalk-cdn.com/202...bd48af6111.jpg


JTD

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Thank you. I appreciate it. I tried 43gr at 2.700 of varget and got great groups, but wasn't sure on RL15. Looks about the same? BTW I have some 165gr SST what did you find for a good recipe using RL15?

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With the 165gr sst, LC brass, CCI 200, COAL 2.750”, my sweet spot with RL15 is between 41.0 -41.5gr. Ive tested 41.0 41.3 and 41.5 multiple times and they all three shoot moa and have the same point of impact. So I opted to use 41.3


JTD

Quote:

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Originally Posted by JeffreyDeGraff

With the 165gr sst, LC brass, CCI 200, COAL 2.750”, my sweet spot with RL15 is between 41.0 -41.5gr. Ive tested 41.0 41.3 and 41.5 multiple times and they all three shoot moa and have the same point of impact. So I opted to use 41.3


JTD

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With my Hornady 150gr Fmjbt should I seat them to 2.700 like 308 or 2.750? In the service 308 the 155gr are 2.800. When I tried varget I used 2.700 at 43gr. Was getting a hair over moa at 100 yards. BTW I use CCI 200 primers as well.

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I used 2.750” for the sst because that’s what Hornady loads them to for standard 308. I would start where the book has them seated to.


JTD

Quote:

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Originally Posted by JeffreyDeGraff

I used 2.750” for the sst because that’s what Hornady loads them to for standard 308. I would start where the book has them seated to.


JTD

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Thanks Jeff I appreciate the help.[emoji106]

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No problem bud. Glad I could help


JTD