I'm always interested in new info. So far I have been playing with loads for 140 and 160 gr accubonds. I've been liking them on paper and haven't had bad luck on deer with them when I shot factory loads before.
RL22 is the friend of all 7mm's. Also, the burn rate of H4831 and H4831sc are the same. Same deal with I7828 & I7828ssc.
Took a lot of variations but I finally settled on a load for my rem 700 mountain rifle in .280 that cuts bullet holes.
49.5 grains of IMR 4350 with a 160 grn Nosler accubond. I tried every bullet from 140 to 162 grain and lots of powder types and charges. The thing that made the most difference was getting the seating depth (overall length) just perfect. Mine are at 3.387.
I shot a whitetail last year at about 100 yards. The bullet went thru a beech sapling (about 3" diameter) then hit the deer in the shoulder. He only went 30 yards. Accubonds are unbelievable bullets. I wouldn't hesitate to shoot elk out to 350 yds with that load.
I can't tell you much about the 280, but I have been real impressed with the 140gr accubond. I worked up a light load for my 7 mag to use practicing and for deer pushing the 140gr accubond at 3000fps, about 280 speeds. I wanted a milder load at the same velocity as my hot 160gr accubond load I used for elk from the lightweight rifle. I took several whitetail with it and never recovered a bullet out to 300yds. A couple were at tough angles too. The deer in my avatar was one of them.
is reloader 22 temp stable? im working up loads with berger bullets now. I have been trying H4350 and that is temp stable but its a very dirty powder.
I reload 4 of the Reloader series (15,17,22 & 25) and have never had a problem. I use the Re25 in my .300 Wby. It is pretty hot load and i notice no differences at any temp I use it at.
Cowboy Action Shooter; Endowment Life Member-NRA
The Original Rocket Scientist-Retired
"My Father always considered a walk in the mountains as the equivalent of church going."