Berger 153.5 jump?
- Thread starter russkim04
- Start date
Not quite the same exact bullet, but they are both Hybrid Berger bullets, so maybe this can help? I do shoot the Berger 153.5’s in my .260 Rem, but I load them long, and single-feed them. I suppose knowing this now, I might give a try at magazine-length jump just to see? 
My Berger 175 Elites in my Christensen Ridgeline FFT 7mm-08 had to be seated to 0.130” of the lands. I was really skeptical at first, but then this happened in 3 separate groupings, all within 1.5 grains of ladder testing (apparently I found the perfect velocity node). Now I’m not worried about jump so much with the Hybrid Bergers like I have always been with the VLD’s that are VERY picky.
And here’s how they grouped with only 0.010” jump in my .280 Ackley Ridgeline…
My Berger 175 Elites in my Christensen Ridgeline FFT 7mm-08 had to be seated to 0.130” of the lands. I was really skeptical at first, but then this happened in 3 separate groupings, all within 1.5 grains of ladder testing (apparently I found the perfect velocity node). Now I’m not worried about jump so much with the Hybrid Bergers like I have always been with the VLD’s that are VERY picky.
And here’s how they grouped with only 0.010” jump in my .280 Ackley Ridgeline…
Running them around .065” in my 6.5x47L. But I can run them anywhere between 60-70 and I don’t see any discernible difference.
Is there any appreciable advantage over the 144 in a small case like the x47?
Highest BC running super slow. 2600ish. Same wind as faster/lighter bullets and all the time in the world to watch trace.
Morgan King runs 156s in 65cm at like 2580 for prs, heard of him? I'm sure he's running a 7.5 or 7tw to be stable at all environments.
I think he ran them up to 2750 too, but I wasn’t sure where he ended up. But I got the idea from him and a few others. All the benefits of bigger heavier bullets and no downsides really.
But yah, most of us are running 7 twists just to be safe.
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2580 is pretty slow, but big bullets show up really well on the plate or off the plate. Obviously works well for him. I’ve considered going back to 6.5 with a mildly loaded 144 hybrid. Not really from a wind advantage standpoint, but a visual advantage down range with the bigger slower bullet. Arguments for a 153.5 or 156 seem to be easy to make as well.
153s around 2600 are about .2 better than 105s at 3000 in a full value wind at 1k yards. Obviously more retained velocity/energy too.
But yes, bigger slower bullet is considerably easier to watch trace and see your impacts. Factor in brakes/weight/etc and it’s more than enough to offset any additional recoil you get from the heavier 6.5s.
Oddly enough, the time of flight difference between a 105 @ 3000 and a 153.5 @ 2600 is only 0.02 seconds at 300 yd and 0.11 seconds at 1000. Not much!
On paper no, but a considerably larger bullet going much slower is also way easier to watch.
.2 doesn’t sound like much, but it’s hard to explain without seeing it for yourself.
Y’all slow your 140s down to 2600 and you can experiment for yourself.
You don’t have to push them to 2850 and 70k psi in a creed.
It’s nice being to have less recoil and more time to recover.
You don’t have to push them to 2850 and 70k psi in a creed.
It’s nice being to have less recoil and more time to recover.
I loaded some in my 6.5 CM, to 2.800, was getting the same drop data as 140 ELD-M out to 600. Didn't chrono. Grouped really well (I try to avoid the <MOA internet debates).
Range report for today. I'm liking velocity node on 147s at 2600 ish for .7 grains... might have to look closer. Play with length to get better accuracy
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