Tomorrow in Northern NV, I'll be shooting in 600-yard F-Class. My rifle is a 6.5 PRC F-class style 28" Heavy Varmint bbl. My load is a 153.5 gr Berger 55.7grs of VV N565 for about 3030FPS. My scope is point blank at 100 yards—Sightron 5-40x56mm ED glass EV111 FFP MIL MIL. I have ten sighters, but I'd like to be on paper for the first shot. Where would I want to start with elevation? My scope is 1.5 above the bore.
F-Class 600 yards sight adjustment
- Thread starter Ironworker
- Start date
NZ_Fclass
Silver $$ Contributor
Good luck.
coldboreshot
Silver $$ Contributor
Start with 3 MIL. I suggest you lose the MIL scope for MOA. Those matches run under the NRA high power rules and the targets are established by MOA parameters. You start confusing the two different measures and you'll get completely sideways. Not to hurt feelings but if your asking for the conversion rate, your not proficient yet to run flawlessly without miscalculation. Just my 2 Lincolns.
swd
Silver $$ Contributor
And it’s FFP, I’d go second focal plane. A fat reticle doesn’t help precise shot placement. But get out and have fun! Don’t forget to add temp to the data.
I'm just going out to have fun. Buying a Top quality SFP MOA scope? Were talking $1500 bucks minimum.
@Ironworker could you report back? I am curious how those calculations worked out.
There are a number of mental calculations you need to make. Is the barrel a right or left twist? What cardinal direction are you shooting? Does the rifle have a muzzle brake? Elevation, temperature and barometric pressure need to be considered. Which direction do I turn the turret for my correction needed. Did you work the load characteristic yourself or borrow it from someone else? Does your chassis have a bag rider? Are you using a rest or a bipod? Do you have enough ammunition , minimum 70 rounds? Tiny umbrella for ammo box so it’s not in direct sunlight. How many sighters do I get between strings? Barrel cooler and mirage shield . Mirage scope cap, hat for myself. Electronic targets or pit crew? Have you ever worked the pits for a mid-range match? Personal viewing device if electronic. Good ear protection. Dimensions of the black on mid-range target? Empty chamber indicator and know range commands. Understand some of this before each “hello” starts with a question. First match be a sponge, you’re shooting something that doesn’t shoot back. First match have fun, breathe, gentle trigger and follow through. Have fun and think about the next match knowing a little more. Don’t forget plenty of water since you’ll be stretched out in the sun. Rethink if you have muzzle brake, NRA says no. Think about the shooters next to you. Breathe, it should be fun and a learning experience . Cheers
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The JBM calculator is fun to play with.
You can enter various conditions and see the predicted drop at 600.
Plug in your best guess for range conditions just to start.
Elevation, Pressure and Temperature will get you close.
A 4DOF (or 6) calculator uses more earth variables but nothing beats fine tuned DOPE from real shots.
A Mil/Mil FFP scope takes a little getting used to when shooting on a target that's based on MOA.
You've had recommendations from 3 to 3.5 mils. Split the difference 3.2/3.3, and that's UP on the turret
The 9 ring is 2 MOA across. Anything from 6" high/low/right/left will at least be a "9".
With a 0.1 mil/click scope that's +/- 3 clicks from the edge of a "9" to the center.
While an "X" cold bore would be great, a "9" would be acceptable. After a few sighters you could fine tune your dope.
Windage will be your biggest challenge (it's still mine).
Wife and I leave the house in about an hour for a 600yd match.
Flat land down south, using Mil/Mil FFP scopes. I seldom see more than +/- 0.1 Mil variance in elevation for range conditions, maybe +/- 0.2 Mil Summer to Winter.
and again, good luck and have fun.
What does 3 clicks do @ 600 yds with a Mil scope?
At a practice session the wife needed to come up a little, about half an MOA, and went
3 CLICKS on a Mil scope.
You can enter various conditions and see the predicted drop at 600.
Plug in your best guess for range conditions just to start.
Elevation, Pressure and Temperature will get you close.
A 4DOF (or 6) calculator uses more earth variables but nothing beats fine tuned DOPE from real shots.
A Mil/Mil FFP scope takes a little getting used to when shooting on a target that's based on MOA.
You've had recommendations from 3 to 3.5 mils. Split the difference 3.2/3.3, and that's UP on the turret
The 9 ring is 2 MOA across. Anything from 6" high/low/right/left will at least be a "9".
With a 0.1 mil/click scope that's +/- 3 clicks from the edge of a "9" to the center.
While an "X" cold bore would be great, a "9" would be acceptable. After a few sighters you could fine tune your dope.
Windage will be your biggest challenge (it's still mine).
Wife and I leave the house in about an hour for a 600yd match.
Flat land down south, using Mil/Mil FFP scopes. I seldom see more than +/- 0.1 Mil variance in elevation for range conditions, maybe +/- 0.2 Mil Summer to Winter.
and again, good luck and have fun.
What does 3 clicks do @ 600 yds with a Mil scope?
At a practice session the wife needed to come up a little, about half an MOA, and went
3 CLICKS on a Mil scope.
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All potential considerations for a match, but I think he's simply asking about a come up to get on target to dial in 600!
In reagrd to the estimates provided 3-3.5 mil), I would start on the low end of the estimates. Your brain will be focusing between you and the target ... it's sometimes easier to see a splash in front of the target rather than a shot that sailed over... just my experience
One run of "fun" turns into an addiction that will make you forget about a budget!!
Used Sightrons w/MOA reticles and Vortex Golden Eagles come up for sale here, both work well for F-Class.
Good luck and enjoy!!
I don't know how the OP did on his 600yd match but mine was PITIFUL.
No wind, temperature was comfortable, but no more shooting with this barrel.
It's been going south for a couple matches and the last practice session I could hold 2MOA.
Counting today's 40 rounds it's close to 3500 rounds.
Replacement barrel finally came in so it retire the old one.
I quit after 2 relays as I did not want to shoot out a sensor.
No wind, temperature was comfortable, but no more shooting with this barrel.
It's been going south for a couple matches and the last practice session I could hold 2MOA.
Counting today's 40 rounds it's close to 3500 rounds.
Replacement barrel finally came in so it retire the old one.
I quit after 2 relays as I did not want to shoot out a sensor.
Up three mils was spot on, thanks! I enjoyed myself. Out of three F-Class open shooters, I was in second place; the shooter in first place was way on top of me. Third place was just a few points less than me. 1st and second string wasn't bad, but 3rd string, my dang barrel, was so incredibly HOT that it felt like my rifle was throwing the bullets. Also, I have a Manners PRS-2 stock, a heavy varmint contour. I can't fit a dollar bill between the BBL and Forearm. Should I open up the BBL channel?
DirtySteve
Gold $$ Contributor
Down load the Lapua Ballistic App for your phone... It is very precise if you put in good data.
By the way my 6.5 Creedmoor come up is 3.1 for a 545 yard shot with a 140 Berger at 2700 fps so 3.1 with yours would be a great starting place..
By the way my 6.5 Creedmoor come up is 3.1 for a 545 yard shot with a 140 Berger at 2700 fps so 3.1 with yours would be a great starting place..
3.1 proved to be spot on.
Better add at least $1000 to that number if buying new. If used, get a quality Nightforce Competition 15-55X. You can’t go wrong with this scope and can usually find them used for around $2K. I also highly suggest using a SFP scope that uses MOA MOA.
Dave.
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