I have shot exactly 150 AMAX 140s through my new Savage Model 12 LRP in 260.
Right off the bat, with the first load (that I guessed at) the rifle was shooting 1/2 MOA at 200 yards. By the end of the chrono session, I was shooting five inch groups at 500 meters.
That's pretty damned good for a new rifle, scope, and load situation. Definitely much better than any experience I've ever had with a .308 rifle.
I started with 4350 and felt it was too fast for the 140. Second load I tried was with VV 160. It was better and shows good potential. Third batch I worked up was with H 4381 sc. It looks like the slower powder has the best potential for development, but I haven't given up on the VV just yet.
Got a box of the HPBTs to mess with on the next cycle.
I really got stuck on Amax bullets in the .308 because I don't seem to get the flyers that were always a part of Scenars and Match Kings. So, the 140 Amax was a comfortable first choice to try in the .260.
With 1/2 moa groups as the first experience, I'll probably stick with them for the near future.
Good bullets !
I still can't figure why guys shoot 120-130 instead of 140s.
The 140s in my 260 go at 2940-60 & I have shot it out to 1280 yards.
A mate was shooting a 6.5x47 with 123s & couldn't get that far, 1000 no problems but 1280 was just too far for the conditions.
My 260 will shoot the 139,144 Lapuas, 140 SST & Amax same poi at 100 into nice little groups.
I use 308 Lapua brass necked down & turned, 215 primer & H1000, very compressed load but it works very well
Kimber LPT, Trueflite 1-8 26" barrel & suppressor.