Why Run a Charlie TARAC?
By Mark V. Lonsdale
The short answer is to be able to shoot longer distances than the internal scope elevation adjustments will allow. Most of the high-end scopes are running about 30 MILS or 100 MOA of elevation, but with a .375 CheyTac, pushing a Cutting Edge 352 grain MTAC at 3,000 fps, it takes 62.5 MILS or 214.7 MOA to reach 3,500 yards without using holdover.
Mounting ring with four powerful magnets
Charlie TARAC mounted to a NF ATACR 7-35×56 FFP
So what is a TACOMHQ Charlie TARAC (Target Acquisition)? It is basically a compact periscope that shifts the scope’s zero optically to whatever the TARAC is calibrated for. For example, a 30 MIL unit (103 MOA) jumps my 100 yard zero directly to 2,500 yards with the above load. That leaves all the internal elevation adjustment in my scope to dial up to 3,400 yards. I then need to use 4 MILS of holdover to reach 3,500 yards. These units are also quite ruggedly built for military applications.
Charlie TARAC mounting ring attached to Nightforce scope on my .375 CheyTac built on a Stiller TAC-408 action in a McMillan A5 Super Magnum stock
So with the 2018 Ko2M just 5 weeks away, I made the decision to go with the Charlie.
Here are the steps for mounting and shooting:
- Ensure that the rifle scope is dead level on the rifle. Verify this on a tall target with a plumbed vertical line.
- Ensure that the Charlie mounting ring is attached dead level to the front of the scope. It screws on in place of the shade and then locks down with a cross bolt.
- On the range, ensure that you have a solid 100 yard zero with your rifle/ammunition combination, and re-zero the scope turrets.
- Now mount the Charlie which attaches by very strong magnets, backed up with two Allen bolts on the sides. You have just moved your point of impact up by whatever the Charlie is calibrated to – in my case 30 MILS or 103 MOA.
Left: scope level. Top right: Charlie level. Bottom right: Scope level
So how do you verify the new point of impact?
It is like running a tall target test with a scope. 30 MILS is 108 inches at 100 yards, but I didn’t have a 9-foot target so ran the test at 50 yards. This only required a 6-foot target since the point of impact should be 54 inches above the point of aim and on the plumbed line.
True to specification, aiming at the base of the target resulted in a group on the line 54 inches above my point of aim. Obviously this will need to be validated at longer distances, but based on the first rudimentary test, I am feeling very confident that I now have a combination of rifle, ammunition, scope, and Charlie to reach 3,500 yards for the Ko2M – if I even make the finals.
For additional information you can check out the TACOMHQ website, and the units are available through ELRHQ.com in Phoenix, AZ