The loads I mentioned earlier give me about 3/4MOA in my bolt action rifle and 1.5 or better in my AR-10(T)
It is all about being consistant. Get you a chronograph to measure the velocity of your rounds.
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I hope this comes out when posted... but you want each bullet to have as close to the same velocity and be as close to the same ~everything~ as possible... that is where your accuracy comes from.
Test # Vel fps Dev off Avg Cartridge Firearm Bullet B.C. Powder Chg gr. C.O.L. Crimp
1 2,660 16 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,644 0 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,618 26 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,627 17 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,638 6 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,645 1 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,654 10 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,648 4 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,648 4 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
1 2,660 16 .308 Win AR10T 30503 168gr BTHP(M) 0.450 Win760 48.5 2.790 Factory
Max 2,660
Min 2,618
Spread 42
Sum 26,442
Avg 2,644
SumDiff 100
AvgDev 10
StdDev 14