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Global Rifle is based at Woodside Farm, Ashby Road, Stapleton, Leicestershire, LE9 8JE, UK
Tel 01455 291100, (UK code is 0044) Fax 01455 292626 e mail paul@snipersystems.co.uk
Their website www.snipersystems.co.uk is full of good shooting gear.

Angle Cosine Indicator

Sheep Hunt on Mauna Kea, Hawaii

To Whom It May Concern,

My son wanted me to relate to you of my making my longest shot. Thanks to my ACI that he had given me as a gift.

I routinely hunt for sheep on the slopes of Mauna Kea, on the island Hawaii. In the past I've made shots as far out as 540 yards, hitting a Sheep in the neck but on level terrain using a 7mm Rem. Mag.

On Occasions, I have missed shots at closer ranges all on either the upslope or downslope of the mountain. I usually hunt elevations between 9500-11500 feet. The Sheep are scarce, and trophy Rams are scarcer. So it is with great frustration when you miss a once in a lifetime Trophy at a close range.

A Trophy Ram is considered to be anything equal to greater than 25". On Wednesday, April 23, 2003, about 6:30am, I hunted my favorite area. I saw a group of Rams (6) about 700 yards downslope of me, at about 9,500' elevation. It was 37 degrees with the wind blowing downslope directly to the sheep.

Using a Leica Laser Rangefinder, I ranged the closest Ram to be 647 yards. I ranged it twice confirming the range. I chambered my Weatherby Ultra Light Magnum, cranked my 3.5-10 Leupold to maximum magnification and sighted on the closest Ram. I took a reading from my ACI, got 97%. I ranged the Ram again, confirmed 647 yards. The ballistics and sight-in for my 300 Weatherby for 625 yards (the corrected range per ACI) for dead on hold was +21 clicks. I clicked the scope up, rested my rifle on a lava rock, and held on the Ram just behind the left shoulder. I took my rifle off safety and touched off my shot. During recoil, even from that distance and with the wind blowing downslope, I heard a twack and knew I had hit home. The Ram ran about 75 yards and fell down dead. Upon recovery, the Ram measured 25" on both horns and the shot was exactly where I had aimed.

Thanks to your great product and my son for giving it to me, I have now been able to fulfill a rifleman's lifelong dream, that of making a perfect difficult long range shot.

Sincerely,

Abraham Sakamoto, proud owner of ACI tool!

Angle Cosine Indicator

By Jacob Bynum

copyright Sniper's Paradise 2000

10-5-00

The wonders never seem to stop. It seems like every other day a company is releasing a new tool that makes our jobs and lives easier. Rifles and ammunition keep getting more refined and the complicated shooting formulas keep getting refined. I had the opportunity to talk with Ward about his invention, The Angle Cosine Indicator, about 6 weeks ago. At the time, he had several in production, but none to send me right away. One did arrive in the mail about 3 weeks later. I was quite surprised by the simplicity of this complicated device.

The Angle Cosign Indicator is designed to give you the angle of your shot as to correct for gravity on your bullet’s trajectory. Up until now, you would get the angle, look on a chart, run a calculation, set your dope, and then take the shot. With this unit, however, the extra piece of gear sits on your riflescope, and is not individually manipulated. The way the ACI is designed to be mounted, It sits in your line of sight while you look through the scope. This is important, because it will give you a direct reading while you are actually on target, not just "close".

My father was going to be the first to test this new unit, as he would be traveling to north British Columbia for a sheep hunt. Due to the simplicity of the unit, I was able to give him about 45 seconds of instruction on its use, and he was good to go. He would be shooting a Sniper’s Paradise designed 338 Lapua Magnum rifle built on a Weatherby action and topped with a Leupold 3X10 Long Range M-3. He is very well aware that angle will affect impact, and was delighted to have the opportunity to test the unit in a real world situation. As a hunter, he is not often afforded the luxury of time when faced with a shot opportunity. The shot he is presented may have a very short window, and time is always of the essence. He does realize the importance of a humane kill, and humane kills are dependant on one factor alone, that factor is highly precise shot placement. That correct placement is also important to his 60-year-old knees that do not really need to chase game animals, especially in the mountains. Over the years, my father has hunted all over the world, including Australia, Africa, Alaska, Canada, North America, and Mexico. The one thing he has learned is, "keep gear to a minimum," My father is positive of his equipments usefulness before he hauls it around the world and then all week in a dusty desert. Does that sound familiar to any one out there?

Back to the A.C.I. The first shot came at a time that he could actually get some use out of the indicator. His goat was at 230 yards and a 60-degree down angle. With the ACI mounted to the scope, my father aimed his rifle at the Mountain Goat, read the number, multiplied it by the range, and dialed the corrected range into the scope. The next movement was the recoil of the rifle as he let one fly. This resulted in a first round kill and took less than 3 seconds. There were only two rounds fired by my father on this trip, one was to convince the guide his rifle had not been damaged during transport, and the other was the killing shot on the goat.

The average temperature during the hunt was 21 degrees, and it was in rough terrain. The initial assessment is that "the unit worked as advertised," and that, "it will be a cold day in hell before I pull it off my gun." I guess I have to buy a new unit for more extensive testing!

I apologize for this review not being put up sooner, but there is nothing like a real world test, especially when that test comes from someone who can appreciate the value of any piece of gear. I have no doubt he has given me the correct information, since I bug him all the time about paying attention to the details so I can use them for our schools.

The Angle Cosign Indicator is a stand-alone unit, it mounts on your riflescope with an extra MKIV type ring you have in your shooting box. The ACI sits on your rifle all the time, it doesn’t get lost, it is rugged, it is accurate, and most importantly, it is easy to use. This piece of equipment is K.I.S.S. at its best. If you are in the position of needed precision on the angle shot, and time is a factor, the A.C.I. should probably be on your rifle.