Should I dump my 280ai?

would you mind sharing the barrel length and powder? I'd like to get that with 160ABs out of mine.
@Palix-Dog
Be sure to start low and work up. It's a 24" barrel, Nosler brass, winchester standard large Rifle primer, 60.5 gns of RL 22. I crono it at around 50° at 400 ft Elevation. I tried H4831 and IMR4350 but couldn't break 2800fps. RL 19 @ 59 gns also gave me 2915 ave.
 
Be sure to start low and work up. It's a 24" barrel, Nosler brass, winchester standard large Rifle primer, 60.5 gns of RL 22. I crono it at around 50° at 400 ft Elevation. I tried H4831 and IMR4350 but couldn't break 2800fps. RL 19 @ 59 gns also gave me 2915 ave.
K thanks. I get 2850 with imr4350 and I have 8 lbs of it. But would like to get over 2950 for an elk hunt, not sure I've seen RL22 in like a couple years tho
 
K thanks. I get 2850 with imr4350 and I have 8 lbs of it. But would like to get over 2950 for an elk hunt, not sure I've seen RL22 in like a couple years tho
It's pixie dust but if you can find reloader 23 it is what unicorns are made of for the 280ai. 160s and up it's the only powder I have needed. Below that and reloader 16 has been the go to. Both are temp stable and produce much better speeds and case fill than any other powder I have used. I did use reloader 26 originally but got pressure spikes in warm temps.
 
You will likely end up running out of powder space for that 155 with 23. 160s and up and you will likely be ok.
I probably will on the 155's with RL23. I did with 150 BDIi. I had to go with a faster burning ball powder to fit it in the case without a compressed load. Still got 3013 FPS on the edge of pressure. You would definitely need a faster twist than a 9.5.

I don't mean to hijack the OP's thread, but I have been really pleased with the 280AI. I don't have a 7PRC, but have 7RM's and now a 280AI. The 7RM spends most of its time in the safe. The bit faster FPS I get with 7RM doesn't really seem to be worth it for me.

i really like 7mm bullets.
IMG_0866.jpeg
 
I probably will on the 155's with RL23. I did with 150 BDIi. I had to go with a faster burning ball powder to fit it in the case without a compressed load. Still got 3013 FPS on the edge of pressure. You would definitely need a faster twist than a 9.5.

I don't mean to hijack the OP's thread, but I have been really pleased with the 280AI. I don't have a 7PRC, but have 7RM's and now a 280AI. The 7RM spends most of its time in the safe. The bit faster FPS I get with 7RM doesn't really seem to be worth it for me.

i really like 7mm bullets.
View attachment 519523
I'd have to get a panorama IMAX camera to take a picture of all my 7mm bullets. :D

Heck, your lineup about covers my 25 caliber bullets.

And you may be ok with 1:9.5 for the 155HH.
I'm shooting 180gr bullets out of a 1:10, 7mm WBY Mag.
 

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