Looking to build my first long range rifle. And have a question on the mount. I see mixed suggestions on use of a 20moa mount. So want to know what everyones thoughts would be. Rifle is a Remington 700LR 6.5cm, scope is a Nightforce SHV 4-14x56. I’ve always been told to keep the scope as close as possible to the bore, but after reading on the 20moa mount it makes sense for long range. I also see where it says for flat shooting rounds it may hinder the rifles ability. So with a 6.5 should I not use a 20moa mount? Would like to be shooting 600+ yards
Long range rifle build help..
- Thread starter Tonyt915
- Start date
The #1 community for Gun Owners in Texas
Member Benefits:
Fewer Ads! Discuss all aspects of firearm ownership Discuss anti-gun legislation Buy, sell, and trade in the classified section Chat with Local gun shops, ranges, trainers & other businesses Discover free outdoor shooting areas View up to date on firearm-related events Share photos & video with other members ...and so much more!
Member Benefits:
Gun Zone Deals
FireInTheWire
Caprock Crusader
I'd run one. Because before long, you'll be wanting to go really long and the 20moa will give you more scope run out.
Next thing you know, you'll be looking at these https://www.nightforceoptics.com/riflescopes/accessories/wedge-prism/details/
Then, you'll find yourself living under a bridge to support your LR addiction.
Next thing you know, you'll be looking at these https://www.nightforceoptics.com/riflescopes/accessories/wedge-prism/details/
Then, you'll find yourself living under a bridge to support your LR addiction.
Definitely get the 20 MOA mount. Your suggested scope might have enough elevation, but having a 20 MOA mount gives you more options down the road.
The 20 MOA mounts give you the extra elevation for shooting at longer ranges.
Here's a really solid perspective from a good friend. High rings or scope over bore height can be beneficial to a point but there is a crossing point of too much.
gatdaily.com
Sent from my SM-G965U using Tapatalk
High Scope Rings and Lower Cheek Comb: Findings from a Professional Field Shooter - GAT Daily (Guns Ammo Tactical)
Cognitive dissonance: the state of having inconsistent thoughts, beliefs, or attitudes, especially as relating to behavioral decisions and attitude change. The Question Kris Walters, currently a platoon sergeant for a BN scout/sniper platoon, made a post in a Jeff Cooper Scout Rifle group...
gatdaily.com
Sent from my SM-G965U using Tapatalk
Lonesome Dove
A man of vision but with no mission.
56mm bell will hamper due to needing High scope rings. Will it work sure but if you want the lowest axis this won't get you there.
Txhillbilly
Active Member
I run 30 MOA rails on several rifles, and use medium height rings on all of my scopes with 50mm or 56mm objectives. No problem at all.
Lonesome Dove
A man of vision but with no mission.
No problems correct but he was asking about being as close as possible to the bore. Using a rail especially a 20 MOA rail, high rings and big scopes don't even kinda get you close.I run 30 MOA rails on several rifles, and use medium height rings on all of my scopes with 50mm or 56mm objectives. No problem at all.
Txhillbilly
Active Member
I didn't read that!
For the OP, There's really no need to try and get any scope as close to the barrel as possible. Set it up so it is at a natural height for your cheek weld, that way when you shoulder the rifle, you're looking directly thru the scope without needing to adjust your head at at to see straight thru the scope.
Just look at any AR / AK style rifle. The scopes set way above the bore, yet a shooter can still use them for shorter or farther targets. It's getting your ballistic data correct that matters.
How low can you go? This is a Nightforce on a Savage 12BVSS. Objective barely clears - but it’s a good height for me.
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
Thanks. The more I've been reading, the more it seems that the consensus is to set up the optic to where you're comfortable, not smashing your cheek on the stock or holding your head over it. When I was younger my dad always said to keep the scope close to bore and just make it work.
If you have a 20moa mount I'd set 0 at 200, unless you don't shoot that close. I have a savage110 that came with a 20moa pic rail and bought an armasight scope mount that has a 20moa built in. I thought "well now I have a 40moa"? After figuring some math it was "oh crap, I have a 400moa"! It multiplies, not adds moa. Now I'm good for a gazillion yards.
Scope-axis-close-to-bore advice stems from a desire to optimize short-range PBR. The farther apart the scope and bore axes are, the more acute the angle needed to get the scope axis (visual aiming axis) to intersect with the bullet trajectory. If one needs to have that aiming point and bullet trajectory intersect close to the rifle, the result will be that the bullet trajectory rises above the aiming axis sooner, and usually rises out of the desired target size soon after on the way to apogee. This shortens your PBR and/or divides it into a near and far segment (unless your desired target size is really big).
So, if you desire to set up a rifle with the longest possible PBR, you need to mount the scope as close to the bore as possible. If you are ONLY interested in long range, PBR is "irrelevant", so mounting the scope where it is comfortable for your shooting position is much more important.
So, if you desire to set up a rifle with the longest possible PBR, you need to mount the scope as close to the bore as possible. If you are ONLY interested in long range, PBR is "irrelevant", so mounting the scope where it is comfortable for your shooting position is much more important.
