Remington 700 vtr

[Alfalover]

In september I will begin a tutorial for shooting at 1000 yards. I have to make ammunitions for it. I usually load:
- Lapua case
- cci primer
- vihtavuori N140 (from 41,5 to 43 gr)
- Sierra 168 gr
I have a Remington 700 vtr (barrel 22" 1:12")
Please help me :confused: I need some tip
Have I to change my reload ? Can I manage 1000 yard with my barrel ?

[Alfalover]

Sorry ... caliber is 308
Angle of shooting is about 0
Temperature in september is around 68 °F
Altitude si about 980 ft
Why nobody replies ?

[4EVERM-14]

The 168's may be borderline successful. Under some conditions they will go subsonic before reaching the targets. It takes a stiff load for them to reach 1000 yds supersonic. 175 's might be a choice to look into as they were designed to maintain velocity at distance.
I have fired 168's at 1000yds and while they remained fairly accurate they did not always enter the target straight on. [AKA keyholed]

[Alfalover]

Thanks David,
I had the same idea; but someone said me that with a barrel 22" 1:12" heavy bullets haven't stability. They said that for more than 168 gr I will need a 1:10 barrel.
I usually shoot at 300 meters and I shoot only 168 ... openly I don't know what happens at 1000 yards.
The barrel is short (22") and twisted (1:12) and I don't know which is the best reload .

Fausto