280 Remington loads

Rem 700 LA 280 Rem 3-9x42 SS
25" McGowen 9 twist barrel
52.5 gr H4831sc & 162 AMax @ 2640 fps
Rem Brass
Fed 210M primer
3.350 COAL
2.125" 3 shot group at 500 yds


Savage 111 LA 280 Rem 5-20x50 SS HD
25" CBI 9 twist
54gr H4831sc & 162 Amax @ 2745 fps
Rem brass
Fed 210M primer
3.390 COAL
This load is right around MOA. Going to try H1000 as soon as my order gets here. Hoping to get it down around .5 MOA with higher velocity.
 
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Tornado, how long is that barrel.
280 info is scarce around here it seems. Thanks for starting this thread.
eta;
Just received Remington brass, 162 and 168[MK]. Have 210m primers.
Only need a powder. 25" 9 twist.
 
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Let's get this going again. My rifle and load specs are:

Trued Remington 700 action, 26 inch M24 contour Bartlein barrel with a 9 twist
168gr SMK seated 0.010" off the lands
Remington brass neck sized with a 0.308" Redding bushing
CCI large rifle primers
53.2gr of H4831
COAL is 3.322" and 2.656" at the ogive
1/2 inch 5 shot group, 2812 fps avg., SD 2.6, ES 6


 
I have a 100 count box in each of the 175 and 180 gr. SMKs that I'm going to try in my 280. Does anyone have load data for these? I also contacted Sierra and asked if the 9 twist will be enough to stabilize both bullets and was told yes and maybe enough for the 183 gr. SMK too.
 
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Win M70 featherwieght 22" 1in 10
Hornady case
BR2's
58.5 gn. H4831
168 Berger classic hunters 2.739 BTO (.015 off)
2798 fps 7 ES 2.6SD
 
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