What is the issue with Accubond long range bullets?

[FLHunter87]

An update for me. Last few times I have shot these accuracy seems its becoming a bigger group. And Im talking about an 1-1.5" group at 100 yards compared to less than a half inch I normally get. I am not sure why that is. Nothing has changed. If this continues I may switch or maybe need to try a different seating depth. Maybe 300 shots or so on barrell.

 

[FLHunter87]

I stuggled getting a load together on the 210's for 2 different 300 PRC's and gave up. I tried 265 ABLR's on my 338 RUM and gave up again they just were not accurate enough for me. I have heard good things about the 142's though. I shoot 140 Elite Hunters on my 6.5 PRC and they shoot lights out so I do not plan to change.

What powder do you use for the 140s EH? I just made some with h1000 to try out. If these dont work I'm just going to go with the 156 since I have the 1:7 twist.