hi guys dan pickar here with Eastmans' bowhunting journal
today we're going to do a review on the Leupold
RX Full Draw 4 rangefinder now this rangefinder
is built specifically for archers for bow hunters
6 power super fast laser but it also has some software in it
called Archers Advantage software that allows you to
input your ballistic information from your bow setup
into the rangefinder and it'll calculate your trajectory of your arrow down to
the target and we'll get more into that here in a second
new from Leupold this year pretty sweet little rangefinder actually
probably their fastest laser they've produced in a rangefinder
which is pretty great it has the scan mode so you can just press and hold and
scan down range and you're getting feedback from
everything that that laser hits in under a second so yeah definitely
handy with that once again this is built for archers
this also does have the los mode which is the line of sight mode
that does not measure or compensate for angle
calculations and then you also have the trig mode which is the true horizontal
distance and that specifically is your angle
compensation for bow hunting but that isn't the
ballistic mode which includes the Archers Advantage
software so there's three different inputs to the
Archer Advantage software that you need to input into the
rangefinder from your bow the first one is the speed of your arrow
so you need to take your arrow out and get yourself a chronograph
and shoot it out of your bow and see what speed you're getting this
specifically is a 468 grain
aero weight that's total aero weight with 100 grain head
and that is also another bit of information that you need to know
to enter into the program so this setup is going 299 feet per second so i'm
going to enter 299 into the rangefinder and then i'm
going to enter 468 as my total arrow weight
okay the last bit of information is the measurement from the center of your
arrow shaft directly vertical to the center of your
peephole and i know from already measuring this
that it's three and three quarters of an inch from
a vertical line from the center of my arrow shaft
to the center of my peep upward in the rangefinder i'll enter
3.75 obviously represents three and three quarters inches the
measurements goes in quarter inch increments keep that in
mind when you're measuring if you're off an eighth probably no big
deal just round to your nearest quarter and that's all there is to it it's
literally that simple so now let's jump in to what that
actually does when using this in the field or at the
range on being able to distinguish and use your
aero trajectory to your advantage so we have all our data points entered
into the rangefinder now we're going to use it so i'm going
to arrange my target down there
59.1 yards and it gives me a horizontal bar
above the reticle reading and that horizontal bar tells me
the peak of my trajectory of the arrow now just by happenstance
we have a limb hanging down at exactly
29 yards so that's within a half a yard of halfway between
the bow and the target so we know at 29 yards that's the peak of my trajectory
so that limb is going to get hit by my arrow
if i were to just shoot down range and not compensate for that
so if you're in a hunting situation all you got to do take a knee
that'll lower your trajectory lower your angle
and that limb will be out of your trajectory peak
or obviously get closer step to the side whatever but it just tells you that
you know that limb could affect your arrow you might get lucky and not hit it
if it's just right or you know you may hit it and you'll
have a disaster on your hands and so we're going to test this we're
going to shoot down range we know that limb
is mathematically in the way so let's see
if it really is and if i hit it or not and we'll see what happens
let's see what we got here
see that so that was right at the peak of the arc of the arrow and i chopped a
little piece of leaf off so that tells me
that by golly if i were to shoot at an elk or something with a broadhead
i would have nailed that limb hit the limb and i may or may not have gotten
them so pretty handy technology proving to
work pretty slick and definitely helpful for
all the bow hunters out there thanks guys for watching another review
on the Leupold rx full draw 4 rangefinder
make sure you subscribe to our channel for more reviews and watch beyond the
grid it's awesome it's bow hunting it gets
you fired up for both season we'll see you next time