If you do not mind me asking why you are using the 140 Gr. bullet? My Rem. 260AI has a factory Rem. thin 22" bbl. I load a 120 BT atop 47.0 gr. of H4350. I chronographed this 10 shot load, let bbl. cool between shots, for an average of 2969. Yes, lots of people do not care for the Nosler BT. I also load a 130 Berger VLD Hunting bullet atop 46.0 gr. of H4350, 10 shot group and let bbl. cool between each shot, for an average of 2867. Again, not all care for the Berger 130 gr. I like each load as both are very accurate out to 300 yds. and beyond. My self imposed limited yardage is 300 yds. +/- 50 yds. Now, I will say that the 130 Berger essentially makes my 260AI as single shot as I seat the 130 Berger out to a measurement of 2.245 touching the lands. Too long for the magazine. I set up my own drop chart to 300 yds. by shoot 5 shot groups at yardages to 300 yds. I get very good accuracy at all yardages with a 3.5" group at 300 yds. Now, I get a little less drop with the 120 BT. But, it is minimal. BTW, I have taken 4 African plains game animals with the 120 BT. One and done. My 260AI is my go to rifle for antelope, white tail deer, mule deer and animals to 300 pounds. I have shot thru feral hog shoulder shield skin, thru and thru with each load. I shot an African Red Lechwe in the chest and the BT exited just above the bull Lechwe anus. We all know that rifle barrels are like finger prints being each is different and not standard. I hope that this might instill some thought and perhaps give it a try. I have yet to play with the new Hornady ELD or the Nosler LRAB. Perhaps in the future. My range time is always in the morning, cool mornings if possible, 3700' elevation with minimal humidity. I live in NW MT and hunt this rifle lots. I have used this Rem. 700 mountain rifle for yrs. It has yet to let me down. I hope this helps. I have been keeping abreast of this post and have learned a bit. Good luck! MTG
