Respectfully submitted to the Campfire brain trust:
115gr Nosler PTs that were recently on sale at SPS
H100V based on jwall's recommendations
Tried loading 11 rounds, increasing 1/2 grain at a time and measuring the MV
Results:
42gr 2904 fps
42.5 2923
43 2982
43.5 2989
44 3030
44.5 3072
45 3100
45.5 3108
46 3152
stopped there as the bolt lift was getting stiff.
What do these data say to you with respect to where I should look for a node? TIA
45 looks like where I’d try working with your data.
I'd shoot some groups and see what the rifle likes. If he's getting stiff bolt lift, that means it is about a grain too many. Maybe even more. Likely to be safe, a grain and a half. Where I'd start is 43, then work up from there. Not exceeding 44.5 grains. Find an accuracy node and OCW, then if need be, adjust oal. Also, regarding the partition: I'd run them at .020" off the lands and expect to find a good load in between 43-44.5 gr charge weights. If he's not, switch powders. H4350 or IMR4350 would be sure bets in the accuracy department.
