Any load data for .260 Remington and IMR 4007 SSC?

[scudzuki]

I ended up with 8 pounds of 4007 SSC and want to try some load development for my .260 with a 24" barrel.
Haven't found any published load data for the .260 but Hodgdon has data for 6.5 CM, which obviously has less case capacity, but the weight of the charges published seem really light even factoring in the reduced case capacity of the CM.
I have 140 Nosler custom comps, 140 AMAXs, and 120 AMAXs.
Anybody done any load development or even run a QuickLoad simulation with 4007 SSC and .260 Remington?

Joe

 

[scudzuki]

Nobody out there has ever tried this?

Joe

 

[lte82]

Nobody out there has ever tried this?

Joe

If it were me, I would try starting at a mid-range published load for 6.5cm and work up from there. Just watch for pressure signs on every shot and you should be fine. 6.5cm loads would be very light in a 260rem (generally 5-10% less powder all things being equal).

 

[scudzuki]

If it were me, I would try starting at a mid-range published load for 6.5cm and work up from there. Just watch for pressure signs on every shot and you should be fine. 6.5cm loads would be very light in a 260rem (generally 5-10% less powder all things being equal).

The published loads for 6.5 CM are absurdly low.
Even the published max of 39 grains seems like too low of a starting load for .260, given that Hodgdon published 41-46 grains of 4007 SSC for a 7-08 pushing a 140 grain bullet. in the 6.5 CM 39 gr is a compressed load, so I'm sure that's one of the limiting factors.

I just find it odd that Hodgdon publishes data for .243 and 7-08 for this powder but skips right over the .260. I understand that there are already some highly regarded powders for .260 (I have a few pounds each H4350, H4831, RL17, but they're not turning up in quantity) but it seems like 4007 should work at least as well in .260 as it does in .243 and 7-08.

I feel somewhat safe starting at 41 gr I guess.

Joe

 

[tnrednk74]

I found a starting load of 40.5gr with a 140 VLD. The above post is right on. You could probably use IMR 4320 data as a reference, which would be conservative.

 

[scudzuki]

Thanks guys.
After doing some more reading I may start down around 39. It's only a few more rounds to load anyway.

Joe