6.5mm Berger 153.5 Long Range Hybrid Question

[T.Rhodes]

I did a search and didn't find anything too current.

I'm looking a load for the 153.5 LR Hybrid using either RL17 or H4350 (two powders I have on hand). I'll be shooting in an 8 twist Bergara and objective is paper from 600 to 1000 yards.

I called Berger and they were good enough to send data on their 156gr bullet and that gives me an envelop of ranges of 36.5 to 40.4 grains for the two powders.

So thought I'd ask here if anyone has experience/suggestions for the load.

TIA.

 

[Walt Krafft]

And the cartridge is???

 

[BlueWater]

Might be the 6.5 Creedmoor, which the OP speaks of back in 2020 (Copper fouling / Bergara 6.5CM).

 

[kindabitey]

Don't know that I would suggest RL17. It can be pretty spicy at higher air temps. I ran it with some 120 gr.
solids in a 6.5 Creed a few years back. At 55 degrees it was around 3050 fps w/o any pressure. At 85 degrees,
it was 3190 and blowing primers.

 

[T.Rhodes]

Sorry - Yes 6.5 CM. My tunnel vision.