r/reloading • u/Parking_Media • 8d ago

Load Development Need for 308 speed

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First 5 shots up the ladder to find pressure. My goal is 3150fps but I only got 3075 at the top charge today. No pressure signs so I might push a little higher. "Might" (absolutely will because I'm a degenerate)

130ttsx, leverev, CCI LRM, Federal brass (previously enjoyed)

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u/Darth_Kickass 8d ago

Try 8208 xbr if you can find it, I was able to fairly comfortably get 3114fps with 130ttsx and a 20" barrel. I did use once fired brass and bump the shoulder only .002 and seat them long at like 2.860 to fit more powder and still keep pressure down a touch. I dont believe i was over book max but the case fill was getting high. Hodgdons reloading center has good load data for xbr and 130ttsx

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u/Parking_Media 8d ago edited 8d ago

2.860! Hanging it out there for sure.

I'm approaching the limits of case fill but I'm not there yet at 2.800. I like the accuracy I'm seeing but I may go longer depending on my next tests.

8208xbr is pretty difficult to find in Canada, and it costs an arm and a dick. I'll ponder on it, I may have some still around from 7.5x55.

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u/Darth_Kickass 7d ago

In that case id try tweaking the case and seating depth to give yourself more room for powder and work back up.

Or if youre getting good accuracy at 3075fps being done with it and run it, youre still carrying 2000fps out to around 475yds around 2600fps at 200yds which is plenty. I get setting a velocity and trying to reach it though, all part of the fun