Ok, I'm very, very new to all this so I'm trying to get as much info as I can before dropping a lot of $$ on a scope. First, I bought a Remington 700 tactical SPS AAC SD .308 rifle. If I purchased a 20 MOA picitinny rail and a scope with 75 MOA elevation adjustment would I gain or lose 20 MOA of elevation in the scope?
Rifle Scopes 20 MOA scope mount
- Thread starter TXpopo
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Re: 20 MOA scope mount
A scope with a TOTAL of 75MOA of internal adjustment means you get roughly 37.5MOA up and down from mechanical zero. By mounting that same scope to a 20MOA canted base, you effectively GAIN 20MOA of elevation adjustment, giving you roughly 57.5MOA from mechanical zero to adjust the scope for use at longer ranges.
A scope with a TOTAL of 75MOA of internal adjustment means you get roughly 37.5MOA up and down from mechanical zero. By mounting that same scope to a 20MOA canted base, you effectively GAIN 20MOA of elevation adjustment, giving you roughly 57.5MOA from mechanical zero to adjust the scope for use at longer ranges.
Re: 20 MOA scope mount
You would gain 20 Moa essentially the scope would be sighted in with the scope turret 20 Moa lower instead of it being in the middle with around 37.5 Moa witch still gets you out a little past a 1000 yards with out the 20 Moa rail and 1350ish with the 20 Moa scope rail (approx)
You would gain 20 Moa essentially the scope would be sighted in with the scope turret 20 Moa lower instead of it being in the middle with around 37.5 Moa witch still gets you out a little past a 1000 yards with out the 20 Moa rail and 1350ish with the 20 Moa scope rail (approx)
Re: 20 MOA scope mount
Great info! Thanks y'all! I've been looking at Vortex and some NF's, although they are quite expensive. Wanting to reach 1000 ft.+ with the .308, what power should I stay above?
Great info! Thanks y'all! I've been looking at Vortex and some NF's, although they are quite expensive. Wanting to reach 1000 ft.+ with the .308, what power should I stay above?
Re: 20 MOA scope mount
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TXpopo</div><div class="ubbcode-body">Great info! Thanks y'all! I've been looking at Vortex and some NF's, although they are quite expensive. Wanting to reach 1000 ft.+ with the .308, what power should I stay above? </div></div>
I assume you mean 1000yds (not ft since 1000' is only a little over 300yds)...
Scope magnification is a pretty subjective thing and also depends on what your targets will be at longer ranges. People have successfully used 10x optics at 1,000yds for many years, but it is not necessarily the "ideal" magnification. I would suggest a minimum of 15x and, depending on your uses for the scope, etc., 20x or so isn't a bad thing. Remember, you can always dial down the power if need be, but you can't dial up beyond the max your scope offers.
The other thing to consider is that magnification is not, in and of itself, the only factor. Clarity and quality of the optics used in the scope make a HUGE difference at extended ranges, particularly as your magnification increases.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TXpopo</div><div class="ubbcode-body">Great info! Thanks y'all! I've been looking at Vortex and some NF's, although they are quite expensive. Wanting to reach 1000 ft.+ with the .308, what power should I stay above? </div></div>
I assume you mean 1000yds (not ft since 1000' is only a little over 300yds)...
Scope magnification is a pretty subjective thing and also depends on what your targets will be at longer ranges. People have successfully used 10x optics at 1,000yds for many years, but it is not necessarily the "ideal" magnification. I would suggest a minimum of 15x and, depending on your uses for the scope, etc., 20x or so isn't a bad thing. Remember, you can always dial down the power if need be, but you can't dial up beyond the max your scope offers.
Re: 20 MOA scope mount
one more question. I had a guy tell me a scope mounted on a .308 should have at least 70 MOA adjustment prior to being mounted. How true is that? Some of the scopes I've been looking at don't have that much adjustment. The Vortex I'm looking at has the 75 MOA but is only 16x. I'm not sure that's enough magnification to see well enough at 1000 yards +.
one more question. I had a guy tell me a scope mounted on a .308 should have at least 70 MOA adjustment prior to being mounted. How true is that? Some of the scopes I've been looking at don't have that much adjustment. The Vortex I'm looking at has the 75 MOA but is only 16x. I'm not sure that's enough magnification to see well enough at 1000 yards +.
Re: 20 MOA scope mount
Yet another pretty subjective situation. There are quite a few variables that have to be considered before making that kind of statement.
Generally speaking, I am just assuming the following... 168gr BTHP, 2650fps velocity... your 70MOA of adjustment will get you to 1000 yards, all things assumed.
DK
Yet another pretty subjective situation. There are quite a few variables that have to be considered before making that kind of statement.
Generally speaking, I am just assuming the following... 168gr BTHP, 2650fps velocity... your 70MOA of adjustment will get you to 1000 yards, all things assumed.
DK
Re: 20 MOA scope mount
Even 55MOA will do the job, assuming the above. Got my table out to verify... 54.88 to be exact. LOL.
DK
Even 55MOA will do the job, assuming the above. Got my table out to verify... 54.88 to be exact. LOL.
DK
Re: 20 MOA scope mount
Vortex PST 6-24 SFP... you would love it!! Give Mike @ CSTactical a shout, he will hook you up!!
DK
Vortex PST 6-24 SFP... you would love it!! Give Mike @ CSTactical a shout, he will hook you up!!
DK
Re: 20 MOA scope mount
Total elevation adjustment travel typically depends on maximum magnification (typically, as the maximum mag gets above 30X or so, the less travel it will have) and the diameter of the tube (bigger diameter usually means more travel). Again, depending on the load you're using, a 20 MOA base is a good compromise between being able to shoot out to longer distances and still being able to zero at 100 yds. If you go with more cant in the base (30 or 40 MOA), you may be able to reach out a little farther elevation travel-wise (if your load is capable, of course), but you may well have issues being able to zero the rifle at 100 yd because the elevation travel can max out on the low end, depending on the scope.
Total elevation adjustment travel typically depends on maximum magnification (typically, as the maximum mag gets above 30X or so, the less travel it will have) and the diameter of the tube (bigger diameter usually means more travel). Again, depending on the load you're using, a 20 MOA base is a good compromise between being able to shoot out to longer distances and still being able to zero at 100 yds. If you go with more cant in the base (30 or 40 MOA), you may be able to reach out a little farther elevation travel-wise (if your load is capable, of course), but you may well have issues being able to zero the rifle at 100 yd because the elevation travel can max out on the low end, depending on the scope.
Re: 20 MOA scope mount
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ORD</div><div class="ubbcode-body">I assume you mean 1000yds (not ft since 1000' is only a little over 300yds)...
Scope magnification is a pretty subjective thing and also depends on what your targets will be at longer ranges. People have successfully used 10x optics at 1,000yds for many years, but it is not necessarily the "ideal" magnification. I would suggest a minimum of 15x and, depending on your uses for the scope, etc., 20x or so isn't a bad thing. Remember, you can always dial down the power if need be, but you can't dial up beyond the max your scope offers.
The other thing to consider is that magnification is not, in and of itself, the only factor. Clarity and quality of the optics used in the scope make a HUGE difference at extended ranges, particularly as your magnification increases. </div></div>
To further ORD's ascertation... I used an ST-10 on my .308 GAP-10 for well over a year and went out to 1250 on a full size IPSC with relative ease provided there's not a lot of mirage. I recently upgraded to a SN3 with up to 17x magnification. Although I could easily see the same target on 10x, at 17x I'm able to actually see where the impacts are, vapor trails, and possible wind movement which was not something available on 10x. As ORD said it can and has been done, but given the option you'll definitely appreciate the extra magnification for improved accuracy and corrections.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ORD</div><div class="ubbcode-body">I assume you mean 1000yds (not ft since 1000' is only a little over 300yds)...
Scope magnification is a pretty subjective thing and also depends on what your targets will be at longer ranges. People have successfully used 10x optics at 1,000yds for many years, but it is not necessarily the "ideal" magnification. I would suggest a minimum of 15x and, depending on your uses for the scope, etc., 20x or so isn't a bad thing. Remember, you can always dial down the power if need be, but you can't dial up beyond the max your scope offers.
To further ORD's ascertation... I used an ST-10 on my .308 GAP-10 for well over a year and went out to 1250 on a full size IPSC with relative ease provided there's not a lot of mirage. I recently upgraded to a SN3 with up to 17x magnification. Although I could easily see the same target on 10x, at 17x I'm able to actually see where the impacts are, vapor trails, and possible wind movement which was not something available on 10x. As ORD said it can and has been done, but given the option you'll definitely appreciate the extra magnification for improved accuracy and corrections.
Re: 20 MOA scope mount
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TXpopo</div><div class="ubbcode-body">one more question. I had a guy tell me a scope mounted on a .308 should have at least 70 MOA adjustment prior to being mounted. How true is that? Some of the scopes I've been looking at don't have that much adjustment. The Vortex I'm looking at has the 75 MOA but is only 16x. I'm not sure that's enough magnification to see well enough at 1000 yards +.</div></div>
The statement means 70 MOA total vertical travel. With a flat base (and the scope centered ^/v) that would mean 35 moa up and 35 moa down. Add a canted base to that like 10 moa and now you have 45 moa up and 25 moa down. You don't really need the 25 moa down so maybe go with a 20 moa base and now you have 55 up and 15 moa down. Now you have the vertical adjustment for a relatively slower bullet out to 1k.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TXpopo</div><div class="ubbcode-body">one more question. I had a guy tell me a scope mounted on a .308 should have at least 70 MOA adjustment prior to being mounted. How true is that? Some of the scopes I've been looking at don't have that much adjustment. The Vortex I'm looking at has the 75 MOA but is only 16x. I'm not sure that's enough magnification to see well enough at 1000 yards +.</div></div>
The statement means 70 MOA total vertical travel. With a flat base (and the scope centered ^/v) that would mean 35 moa up and 35 moa down. Add a canted base to that like 10 moa and now you have 45 moa up and 25 moa down. You don't really need the 25 moa down so maybe go with a 20 moa base and now you have 55 up and 15 moa down. Now you have the vertical adjustment for a relatively slower bullet out to 1k.
Re: 20 MOA scope mount
I let a local gun shop talk me up on a leatherwood m1000 ART. Being new I didn't know about magnification importance. The m1000 is only 10x. I like the concept behind the ART but I'm a little weary about being able to hit a target 1000+ yards with the 10x. I'm so ignorant in this area. Maybe I'm trying to sprint before I walk. I appreciate everyone's help. What is a scope that will meet my need as a new boot?
I let a local gun shop talk me up on a leatherwood m1000 ART. Being new I didn't know about magnification importance. The m1000 is only 10x. I like the concept behind the ART but I'm a little weary about being able to hit a target 1000+ yards with the 10x. I'm so ignorant in this area. Maybe I'm trying to sprint before I walk. I appreciate everyone's help. What is a scope that will meet my need as a new boot?
Re: 20 MOA scope mount
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TXpopo</div><div class="ubbcode-body">I let a local gun shop talk me up on a leatherwood m1000 ART. Being new I didn't know about magnification importance. The m1000 is only 10x. I like the concept behind the ART but I'm a little weary about being able to hit a target 1000+ yards with the 10x. I'm so ignorant in this area. Maybe I'm trying to sprint before I walk. I appreciate everyone's help. What is a scope that will meet my need as a new boot?</div></div>
Don't sell yourself short. People shoot 1k all the time with open sights.
added:
Yes, it's nice having enough magnification to see exactly where you want to hit. But, often times it's a matter of treating the scope view like an open sight "sight picture". The mirage, light, seeing the wind, can all be done without the aid of magnification. Personally, for 1k, I don't see any reason to want something over 20x. It's a bonus if you get, and can use, 24x (like on a lot of 6-24x scopes)
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: TXpopo</div><div class="ubbcode-body">I let a local gun shop talk me up on a leatherwood m1000 ART. Being new I didn't know about magnification importance. The m1000 is only 10x. I like the concept behind the ART but I'm a little weary about being able to hit a target 1000+ yards with the 10x. I'm so ignorant in this area. Maybe I'm trying to sprint before I walk. I appreciate everyone's help. What is a scope that will meet my need as a new boot?</div></div>
Don't sell yourself short. People shoot 1k all the time with open sights.
added:
Yes, it's nice having enough magnification to see exactly where you want to hit. But, often times it's a matter of treating the scope view like an open sight "sight picture". The mirage, light, seeing the wind, can all be done without the aid of magnification. Personally, for 1k, I don't see any reason to want something over 20x. It's a bonus if you get, and can use, 24x (like on a lot of 6-24x scopes)
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