Any feed back on this reticle. The directions say to use 14x 0n a 6.5-20 Fullfield Burris scope. I assume the the subtensions are different at 6.5x or 20x. I thought the subtentions were the same at any power?

This is not a big deal since this allows for specific settings to take care of your individual trajectory. This is a very useful system having both the mildot and trajectory marks out to 600 yards.

Hey ZERMEL

I have a Burris Black Diamond 4x16x50 on my 270. Like you said the reticle is supposed to work at 14x. The reason it only works at a certain power is because the reticle does not increase in size when you change power like the European style reticles do. On the European style scopes like the Swarovski with the TDS reticle, you can use the reticle dots at any power.

The Burris Ballistic Mil Dot is different than the Burris Ballistic Plex. The BMD is made for a 22-250 shooting a 55 gr Sierra Boat Tail at 3680 fps. As you can imagine, you really have to push a high ballistic coefficient bullet hard in order to match this reticle. The dots subtend .8", 2.4", 4.6", 7.2" and 10.4" on a target at 100 yards. The Ballistic Plex subtend 1.5", 4.5", 7.6", and 11" on a target at 100 yards. The Ballistic Plex works well for a rather slow bullet like the 30-06 shooting a 200 gr Accubond at 2650 fps if zeroed at 100 yards or a more normal trajectory like the 300 win mag shooting a 200 gr bullet at 2950 fps and zeroed at 200 yards.

As you can tell, I have used the Ballistic Mil Dot, the Ballistic Plex and the Kahle/Swarovski TDS reticle. I prefer the TDS reticle in a Swarovski if you can afford it.

Reticles (any kind) placed in the second focal plane on a variable scope do not change size as the magnification changes.

Reticles placed in the first focal plane (the better ones) keep the same size relationship between reticle and target no matter what the magnification.

quote:

Reticles placed in the first focal plane (the better ones) keep the same size relationship between reticle and target no matter what the magnification.

I don't agree on that statement. FPR are not better than SPR. Just depends on hoy you were trained. Inherently there is no "better" option

One advantage of the reticle in the first focal plane is that you do not get a point of impact change when you change the magnification on variable power scopes.
Glenn

quote:

Originally posted by Stonewall:
One advantage of the reticle in the first focal plane is that you do not get a point of impact change when you change the magnification on variable power scopes.
Glenn

First or second plane does not (or should not!) affect POI when changing magnification.

quote:

Originally posted by Gustavo:

quote:

Reticles placed in the first focal plane (the better ones) keep the same size relationship between reticle and target no matter what the magnification.

I don't agree on that statement. FPR are not better than SPR. Just depends on hoy you were trained. Inherently there is no "better" option

You’re welcome to your opinion, but the people using and relying on Mil-Dot reticles the most (The US Army and Marine Snipers) would disagree with you on that.

Only being able to use the mil dots for ranging, hold overs/unders and leads at one magnification is a poor design for a variable scope. That’s why the better made tactical variables (S&B, Leupold, etc.) have first focal plane mil-dot reticles so the features of the reticle can be used at any magnification.

The Marine Corps has recently gone to a S&B variable sniper scope to replace their fixed 10x Unertl’s and Premier Reticle is supplying the scopes with their proprietary Gen II Mil-dot reticle...which is located in the first focal plane.

quote:

Originally posted by Rick 0311:

quote:

Originally posted by Gustavo:

quote:

Reticles placed in the first focal plane (the better ones) keep the same size relationship between reticle and target no matter what the magnification.

I don't agree on that statement. FPR are not better than SPR. Just depends on hoy you were trained. Inherently there is no "better" option

You’re welcome to your opinion, but the people using and relying on Mil-Dot reticles the most (The US Army and Marine Snipers) would disagree with you on that.

Only being able to use the mil dots for ranging, hold overs/unders and leads at one magnification is a poor design for a variable scope. That’s why the better made tactical variables (S&B, Leupold, etc.) have first focal plane mil-dot reticles so the features of the reticle can be used at any magnification.

The Marine Corps has recently gone to a S&B variable sniper scope to replace their fixed 10x Unertl’s and Premier Reticle is supplying the scopes with their proprietary Gen II Mil-dot reticle...which is located in the first focal plane.

Rick is correct.

I am a little confused. Since I have not mounted this 6.5-20x50 Burris FF II yet I don't know in what plane it is. The manual says to use 14x.

This is a very interesting reticle since it has both the ballistic plex and the mildots.

As far as the balistic plex goes you can asign any yardage to the four range markers if you know the trajectory of your load.This may not fall excactly on the even 200 300 400 600 yards.
But then you never shoot varmints at even 100erds distances.

The mildots are on the sides and on the top and the ballistic plex on the bottom. Use the mildots for ranging select the approximate range marker and you are in business.

I can't see too much trouble whether the reticle is in the first or second plane since all this is only needed for shots past 300yards with a flat shooting varmint rig.

From what I can tell sofar this scope is a pretty good one for its intended varminting purposes.

quote:

Originally posted by ZERMEL:
I am a little confused. Since I have not mounted this 6.5-20x50 Burris FF II yet I don't know in what plane it is. The manual says to use 14x.

This is a very interesting reticle since it has both the ballistic plex and the mildots.

As far as the balistic plex goes you can asign any yardage to the four range markers if you know the trajectory of your load.This may not fall excactly on the even 200 300 400 600 yards.
But then you never shoot varmints at even 100erds distances.

The mildots are on the sides and on the top and the ballistic plex on the bottom. Use the mildots for ranging select the approximate range marker and you are in business.

I can't see too much trouble whether the reticle is in the first or second plane since all this is only needed for shots past 300yards with a flat shooting varmint rig.

From what I can tell sofar this scope is a pretty good one for its intended varminting purposes.

Since your instructions say to use 14x then its a pretty safe assumption that it is a second focal plane retical...and the ranging features are only going to work at 14x.

Look through the scope and turn the magnification dial. If the reticle stays the same size its second focal plane. If it changes size then its a first focal plane and will retain its mil dot relationship to your target at any power setting.

Thank you Rick o311.