How to range estimate using Mils

[@rkba4923]

Every frontline grunt needs this reticle on his rifle!!! Thanks, Dimitri, for your contribution to the effectiveness of our fighting men. Regarding range estimation using reticles/arc measurements: I'm just a simple man. I'm also an ex-Artillery Officer (studied MILS extensively trust me!) and I have found, for hunting purposes anyway, the MOA system to be more simple. You don't need to remember any constant figures or major formulas. For example, you're hunting coyotes and, in that area, the average coyote measures 9" from top of hair on back to bottom of hair on chest; using the reticle you measure it at 3 MOA: 9/3 = 3 x100 = 300 yards. Or, let's use a White Tailed Prairie Dog that, on average, measures 12" from top of head to bottom of paws and you measure them with reticle at 5 MOA: 12/5 = 2.4 ~ 240 yards. This is much, much easier at dawn in -17 wind chill when you have two coyotes coming in than trying to remember formulas and work a frozen calculator, etc. jmho (PA actually has another reticle designed specifically for hunting that's much like the HUD DMR and would work well for guys that don't like calculators and formulas or working with MOA or MILs, etc.!) P.s.: By the way, if you have a MIL reticle, you can still use the above by converting MILs to MOA. Simply divide your MIL reading by 3 to get MOA. All you need know then is the size of your target in inches. The more you use these methods, the easier and quicker you get at it because of the marvelous computer our Creator provided us!

[@theimmortal4718]

I love how versatile this reticle is!

[@charlesludwig9173]

Using the formula: target size in yards times 1000 divided by target size in mils might be the better means to ranging when speed is needed, as well as need to maintain eyeball on reticle. Bullet Drop Compensation can then be addressed via hold or sight adjustment. BTW, since the ranging/bullet drop compensation reticle used on the ACOG is scaled to the E size/type target, no math for ranging or bullet drop compensation is needed when shooting at E type target. Interestingly enough, while assisting the USAMU deliver an SDM Course at Ft. Bragg I discovered inconsistent sight alignment could theoretically produce about 18 inches of angular error at 600 meters when using the ACOG thus I directed the shooters, I was assigned to, to maintain stock weld and eyeball to eyepiece relationship for entire 10 round string of fire on the shooters last 600-meter exercise before class completion. I had 5 shooters finish with perfect scores having known the exact wind favor need from previous instruction on that topic. One of my shooters however broke his stock weld after each shot to record info into his data book even though the class did not cover data book usage or instruction on calling shots, so who knows what was being recorded. At any rate, this shooter had ten misses. This made me think overall my team of shooters would not win this event. I was wrong. The 5 other shooters I was giving instruction to having perfect scores led to highest team score and coins for all of us in spite of one knucklehead who could have spoiled it for all for not listening to instruction.

[@Mrgunsngear]

good stuff

[@myongpark]

I’m starting to think I only get YOUR feed Mrgunsngear.

[@bradsmith5838]

Thank you for clearing things up.

[@goobermintheretik1454]

Using a coyote having a length of 36 inches x 27.78 / 6.5 mils = 153.85 yards. Using more than the single 18" torso example doesnt quite clarify the usage. Yes you said youve got to know the dimensions of the target but another example provides a greater understanding. Thanks for the effort. I love this scope!

[@briangc1972]

With the coyote, you could just call it 1 meter and not do any hard math. 1 coyote measuring 6.5 is 1000 divided by 6.5 = 153 meters The example of using a torso: Torso = .5 meter Torso fills 1 Mil, .5 times 1000 / 1 = 500 meters Torso fills 2 Mil, .5 x 1000 = 500 divided by 2 mil equal 250 meters

[@gooberminther3tik25]

@@briangc1972 Got it! It is easier😃

[@vincef5832]

Is this First Focal Plane or Second Focal Plane. Interesting scope. I'm leaning toward a regular MilDot reticle(FFP) or a Gen 2 MilDot with the hash marks and dots. However as I'm better understanding all the various mil relation formulas, the HUD adds a little more capability. It's a bit busy but I'm curious.

[@jamesmarshall9420]

I recently purchase a Primary Arms SLx 3-18x50mm FFP Rifle Scope ACSS-HUD-DMR-308. I have a question about range estimation relative to 300 yrds. using the bottom outer edges of the horseshoe, the top end of the vertical bullet drop compensation scale and the 300 yrd. horizontal hash mark... while it appears that the top of the bullet drop scale and the horizontal hash mark appear to intersect with one another, they do not appear to intersect with the outer bottom edge of the horseshoe... please clarify which is more a representative of the 300 yrd. mark range...? Thanks

[@kelvynfurniel7272]

Hey very good video.. Can you tell me Which scope comes with that same rectical I like to buy one just like that very urgent.... Or Which ones because I am also intrested in getting me a 300 yd 1 with the same picture

[@tsafa]

Great video. Thank you

[@brokenrevisited]

Hi, I just purchased one of these scopes (SFP ACSS-type) and am confused about the ranging bars when zoom is used. According to the manual, for range estimation to be accurate one must push the zoom all the way up to 6X, but I imagine that with one of the more expensive FFP scopes you would be able to get accurate range estimation regardless of the zoom level?

[@davidfultz6483]

Yes , that is the ability of the FFP. The reticle stays in the same relation size to target no matter the magnification. Good question.

[@goobermintheretik1454]

You are correct with both SFP and FFP. Advantage - target is 100 yards. Crank your SFP power to max to range it. Or having a this 4-14x44 FFP at 4 power the ranging is correct without cranking to max to range it and loose field of view at the same time.

[@exposingthedarknesswiththe9190]

*DO THE 'CIRCLES' REPRESENT THE 18" OR THE VERTICAL LINES BECAUSE THERE WON'T BE AN ANIMATED SQUARE TO GAGE FOR DISTANCS18" SO, USING WHAT THERE IS, EXPLAIN THAT.*

[@jklappenbach]

I've found it much easier to just think in the metric system. For example, let's say we're trying to range something that we know is 6' tall and their image is 4 mils tall.. Imperial: (Length in x 27.77) / mils -> ((6 x 12") x 27.77) / 4 -> (72 x 27.77) / 4 -> 2000 / 4 = 500m Metric: (Length m x 1000) / mils -> (2m x 1000) / 4 -> 2000 / 4 = 500m If you can think in term of meters / 10ths of meters, you'll find that the math is much easier. If your brain simply won't function with meters, just think in decimal fractions of yards (1.7, 2.2, etc), as a yard is very close to a meter. You can ditch the calculator.

[@ninja5672]

Except that 2 meters is 6.56 feet so your ranging scenario would be actually 457 meters. In some calibers or small aiming points, that might mean a miss. Would be more important at longer ranges. Also your first "imperial" math is for yards to target, not meters. 500 yards = ~457 meters.

[@jklappenbach]

I think the take-home is this: milspec was designed to avoid the need to make a ton of calculations in order to range. But it only works if you *think* in the metric system. If you insist on thinking in terms of inches, just save yourself the agony and go for a scope with moa based reticle and controls.

[@cryhavoc9748]

I have an inexpensive scope, but it holds zero and I shoot it a lot. Maybe one day I will be able to upgrade.

[@sword-and-shield]

My question is why the extra dots on the main vertical line? sure wont help with those .25 and .75 yard subdivisions that start to matter past 500.

[@brassvulcher8207]

they are mils it has the mil system in it

[@chrisma9056]

You feel like your cheating on a math quiz on shots but Effective fast shots work great for moving Deer when hunting.

[@xXspectre170Xx]

So when you're measuring the inches for the target are you measuring vertically or horizontally? Also, I thought the ranging equation was target size x 1000 / mils covered

[@charlesludwig9173]

Alternative formula is size of target in yards X 1000 / target size in mils. Example for a target 36 inches in diameter: 1 X 1000 = 1000 / 1mil = 1000 yards

[@robertwest4299]

Anyone who can help. I’m looking for a 6.5 grendel round that will match the trajectories that this reticle was built for somewhat closely

[@williamgonzalaez229]

That’s great! Thanks

[@teddyjakeddy975]

so if it was a varmint that you know was 6", you would use 6 x 27.78?

[@goobermintheretik1454]

divided by the number of mils covered by that bunny, say 5, and that bad bunny is 33.336 foots away.

[@ninja5672]

@@goobermintheretik1454 33.336 yards*

[@williamgonzalaez229]

Wish the one I bought was a shock resistant .

[@jimmymcjimmyvich9052]

All Rabbits look the same down my fields. a 4 week old rabbit is very small. a 1 year rabbit is big. Near and far away....How am I to know what distance he is at at night? They are all male))

[@Shabazza84]

You could have explained, where that magic number 27.78 is coming from. Someone using centimeters or feet or yards as input value will not hit anything with this formula. I'm a strong believer, that everyone should always know WHY he or she is doing something and not just memorize numbers that make no sense. => It's the constant to convert the result (which would normallly also be in inches, if that's your input unit) to yards, for easier usage. (zeroing your scope / calculating bullet drop compensation, ect)

[@priestof1s]

SHART the x axis mils o was off like nuts ate 20 rounds on trying to zero using reticle only at 100. Got close but 2 inches was as close to a quarter I could get.

[@charlesludwig9173]

Zero without any consideration for the tic marks on the reticle.

[@gooberminther3tik25]

Mil dots on the center posts of the BDC. Not nearly as conspicuous as the mil spacing between verticals lines either side of the horseshoe. There are mil dots, unspoken of, on this center post as well. The top of the post is 300yds and coincidentally at 400yds is 1 mil spacing and again at 500 is another 1 mil. At further distances the 600...1000 the mil dot become visually separated from the horizontal yardage marks. Thus a standing target can be Mil range measured, whether zombie or beefalo. Ugly creatures they are. Another component of this amazing ACSS reticle are the moving target lead dots on each of the ranging horizontals 300-600 yds. I presume they are addressed in a subsequent video?

[@wmnapier]

Hmmm lets run out and measure that deers torso or better yet why not just pull out my range finder and I have my yardage in a millisecond. Gee I didn't even need a calculator. I understand the concept but, I think we have passed the 18th century.

[@tonybailey89]

Lol I'll stick with MOA FFP scopes with BDC built in this is too much

[@jimmymcjimmyvich9052]

huh?