My latest test. D4350ssc.
Gun:
Rem 783, 6.5 Creedmore 24" heavy barrel
Ammo:
Virgin Hornady 6.5 Creedmore brass. Trimmed to 1.910.
Weighed and sorted to .5gr
Fed 210M primer
140gr Hornady SST weighed and sorted. Within .5gr (I wanted to use these up)
2.690coal.
Charges weighed on a RCBS 5-0-2 scale
18C at 300' elevation.
Labradar speeds 10 shots each load. Which was verified with my known 308 load.
Load A:
41gr IMR 4350
Avg 2567
Hi. 2593
Lo. 2548
ES. 45
Load B:
41gr D4350ssc
LOT 25
Avg 2450
Hi. 2475
Lo. 2432
ES. 43
The ES seems high.
Only did 10 shots today as I didn't think there was any need to get a larger sample for these 2.
As for accuracy. Neither.
Attachment 419217
I added the 7828 as it is the only SSC I have.
I would say the D4350ssc is a considerably slower powder. Maybe even closer to 4831 or RL19 as some have already suggested. I had some IMR 4831 loaded up but not that low.
Even the IMR4350 is 150fps slower than the Hornady book using the same ingredients. Hornady shows 42grs of IMR4350 as a max load.
I will try the 300 win next. Just I had my scope lens fall out so it is in for warranty. Might be a month or 2.