280 AI load development

[Seabeeken]

How was the velocity? I plan on using hammers unless the 145lrx shoot significantly better. I use the HH out of my heavy 7mm RM. Took two deer last year with it, very clean killing bullet.

That was one of 3 loads that I didn't get a velocity reading for. My labradar wasn't aimed quite right. It was a compressed load of 61 gr H-1000 and shot .66"

 

[LRHNTR]

I have found with my 8 twist 280AI that you really start to appreciate this cartridge once you get into 175-184 bullet range.

 

[Darryle]

I was given a load that has worked in two different 280AI rifles with a little tweak to the original recipe

140gr Bullet of choice
Starting @ 59 up to a max of 63.5 N165
FGM210M
Nosler or Peterson brass

Start at the 59grs and work up at your own risk.

YMMV

 

[Redleg84]

I tried pretty hard to get my 280ai to shoot the 175s but couldn't get the speed and accuracy I was hoping for. I dropped down to the 162 eldm and found a great shooting load almost immediately.
I often wonder if I'd get the 175s to shoot better if I slowed them down.

 

[ultimag43]

I have found with my 8 twist 280AI that you really start to appreciate this cartridge once you get into 175-184 bullet range.

gonna go that high in bullet weight might as well go to 300wm or bigger