New to long range shooting need advice for 308 come ups

[Little Creek]

I have an unfired Savage 10 FLCP-K in 308. By 2/11 I will have a NF SHV 5-20x56 with MOAR illuminated reticle, a 20 MOA base, and 1" high rings. My home range has 100yards and 200 yards. I will be shooting 168gr Match ammo. At what distance should I zero? From that zero, what would the suggested "come ups" be for 400, 500,etc yards out to 1000 yards. There is a 1000 yard range within driving distance. I just want to get some idea of where to start. BTW, what are your suggestions as to breaking in this barrel?

[markm]

If you plan to do some 1000k shooting. Just start and stick with 175gr ammo. Zero at 100. 500 yard come up should be about 3.5 mils.

[BOOSTjunkie]

175 grain SMK HPBT is the industry standard for 308 pills pushing around 2700 fps should be the ticket for you

you can touch 1000 at just around 10 and a half mils

500 is about 3.5

600 is about a hair over 4

800 is about 7

100 is your zero

Good to go?

[Failure2Stop]

http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi
http://appliedballisticsllc.com/ballistics/

Both have a good library of projectiles, you just need to get your MV, optic centerline above bore, and general environmentals (you can run standard corrected at your altitude and be close).

Barrel break-in: many more opinions than hard data on this. I tend to stay away from the voodoo and stick with shooting. Cleaning carbon is more important than removing all copper. During zeroing, push a wet patch followed by a few dry patches between groups for the first 4 or five groups and watch for group shift. Take meticulous notes and pictures of your groups. Hard-core precision folks will likely disagree with me.

Agreed with 175s for work past 600.

[BOOSTjunkie]

there is much voodoo involved with breaking in a barrel and cleaning it as far as a precision rig is concerned... you could try shooting it?

[Little Creek]

If you plan to do some 1000k shooting. Just start and stick with 175gr ammo. Zero at 100. 500 yard come up should be about 3.5 mils.

Does 1 MOA = 3.6 mils? If so that would make the MOA come up for 500 yard about 10 MOA with a 175 gr Match bullet. Is that in the ball park?

[Little Creek]

http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi
http://appliedballisticsllc.com/ballistics/

Both have a good library of projectiles, you just need to get your MV, optic centerline above bore, and general environmentals (you can run standard corrected at your altitude and be close).

Barrel break-in: many more opinions than hard data on this. I tend to stay away from the voodoo and stick with shooting. Cleaning carbon is more important than removing all copper. During zeroing, push a wet patch followed by a few dry patches between groups for the first 4 or five groups and watch for group shift. Take meticulous notes and pictures of your groups. Hard-core precision folks will likely disagree with me.

Agreed with 175s for work past 600.

Many thanks for those links and the advice on barrel break-in.

[Failure2Stop]

Does 1 MOA = 3.6 mils? If so that would make the MOA come up for 500 yard about 10 MOA with a 175 gr Match bullet. Is that in the ball park?

1 mil is 3.6 inches at 100 yards

[markm]

Does 1 MOA = 3.6 mils? If so that would make the MOA come up for 500 yard about 10 MOA with a 175 gr Match bullet. Is that in the ball park?

3.5 = 11.81 MOA, to be exact.

[Ming_the_Merciless]

Does 1 MOA = 3.6 mils? If so that would make the MOA come up for 500 yard about 10 MOA with a 175 gr Match bullet. Is that in the ball park?

1 mil is 3.6 inches at 100 yards

Jack is right, here's the math:


It's a common mistake to think that 1 mil equals 3.4" at hundred, oppose to 3.6", because 1 mil equals 3.4 MOA.

Another common mistake when folks are making conversion is 1 MOA equals 1" at 100 yards (but in reality is 1.0472" ), discounting the 47 thousandths, is close enough for government work. Even at 1000 yards, you're looking at an error of half an inch (0.47"), so practically negligible.

3.5 = 11.81 MOA, to be exact.

Negative, 3.5 mils = 12.03 MOA: