August 22, 2008
Mercworx Knives
August 1, 2008
On Target Shooting Software
The above is a 3 shot group from a AI AW 308 shooting from a bench at 100yds using Black Hills factory ammunition.
The above group is 5 shots at 50yds from an Infinity AET IMM Compensated barrel with a 4 port barrel and a 3 port Titanium compensator. The barrel was being tested from a fixture with reloads and will be included in a new SVI Infinity IPSC Open Gun for MOA Performance.
The beauty of the software is that it is straightforward to use. You simply download a scan or photo of your target. The program requires you, with assistance by its built in tools, to input some rudimentary data to accurately calculate your group size at the distance you were shooting. The inputs required are:
- Setting the target distance
- Set the centre of each shot, and
- Nominate the calibre to obtain the correct bullet hole size to measure.
Once you've marked each bullet hole the program automatically calculates group centre, maximum group spread, average distance to centre, group width and height, and group offset from point of aim. The program can also measures multiple groups on the same target. A text box is then produced that summarises all the main input data.
The program worked with calibres from .17 to .451. However, if you have an odd calibre you are able to customise that calibre in the software.
Although accurate, the photographs and the scanned targets should not be too distorted or slight errors in measurement will occur. Therefore, when taking photographs, try and make sure you are taking them straight on and not at an angle.
The program is helpful for measuring groups with widely dispersed bullet holes. The program automatically finds the two most distant shots. You can't mistakenly pick the wrong pair of shots to measure.
The software works well when plotting a large number of shots that overlap or for plotting very small calibres such as .17. Since you are able to increase the target image by more than 500%, you can see fine details, allowing you to plot shots that may have been too difficult to identify with traditional measuring means.
In addition, the program also calculates average shot distance from centre (ATC). This can be useful for shooters who need to be as close to the centre of the target as possible.
If you want to know more about the new software go to www.ontargetshooting.com and have some fun. The website has a streamed video tutorial that takes the operator through the steps on how to use the system. It visually demonstrates all the key processes you need to undertake.
July 31, 2008
What is Minute of Angle (MOA)?
Calculating MOA is usually undertaken in empirical measurements ie inches and yards.
Fundamentally, MOA is 1/60th of one degree. A full circle is divided into 360 degrees and each degree is divided into 60 minutes. Thus, there are 21,600 minutes in a full circle (360 x 60 = 21,600).
Therefore, to calculate MOA, imagine a very large circle with a 100 yard radius (distance from the circle centre to the edge of the circle). This circle would also have a circumference (the full perimeter distance of the circle) of approximately 628.32 yards or 22,619 inches. By dividing the circumference (22,619 inches) by the number of minutes in a full circle (21,600 inches) gives a value of about 1.047 inches (22,619 / 21600 = 1.047). Similarly, the size of a bullet's impact point would change by 2.094 inches at 200 yards (1.047 x 2) and change by 3.141 inches at 300 yards (1.047 x 3) and so on.
So, if you calculate 1/60th of a degree when firing a rifle at a target 100 yards away, the measurement between the two lines of the angle that radiate from your shooting position to the target 100yards away is 1.047 inches or approximately 1 inch.
A major concept that most target shooters or hunters need to understand is that for every firearm and ammunition combination employed there will be a specific and individual MOA value associated with that combination. We are considering purely MOA in this discussion, however it should be noted that there are factors or variables that impact on the MOA. Such obvious factors are the variances attributed to the expertise of an individual operator of the firearm.
In evaluating MOA potential of a particular rifle and ammunition combination, it needs to be highlighted that precision and accuracy do not mean the same thing. That is, rifle precision is a measure of how close a bullet will hit at the same point it had before. Where, rifle accuracy is hitting the aiming point. When combing precision and accuracy, where the point of aim coincides with accuracy we call this MOA Performance.
Therefore MOA is a concept that provides the shooter a reference point for evaluating Performance of any combination of firearm and ammunition.
By understanding the MOA Performance concept it is also possible to provide an understanding at what ranges a shooter could conceivably hit targets, particularly at long distances. In deed, if all things are made equal, it also provides feed back as to the ability of the operator.
July 23, 2008
Surgeon Rifles and Actions - Coming Soon
July 21, 2008
BulzEyePro Optical Boosters
MOA Performance proudly introduces the BulzEyePro Optical Boosters to the Australian shooting enthusiast.
BulzEyePro has created a revolutionary new product that boosts the magnification of your rifle scope without any modification to your scope. It is an eyepiece lens extension that fits on your rifle scope between your eye and the end of the scope.
The Optical Booster comes in a number of different strengths from 2X right up to 13X for special applications. Generally though the magnifications available will be 2X, 2.5X, 3X, 3.5X, 4X, 4.5X and 5X.
Application of the BulzEyePro Optical Booster
Essentially a 2X version of the Optical Booster can increase an image size by approximately 15% while a 3X Optical Booster can boost the viewed image by about 30%. Therefore, as an example a 25X scope with a 3X Optical Booster creates the equivalent of a 32X scope. Or for the bench rest shooters using a 3X Optical Booster on a 45X scope will see the image as though you were looking through a 58X scope!
There are many magnifications and versions available to meet the need of the shooting enthusiast for a wide cross section of applications, including hunting and varmint shooting and competition shooting.
Further Beneifits
There are versions of the lens that are designed for specific purposes such as long distance competition shooting. As an example, the use of a multicoated polycarbonate lens can reduce or negate the affects of mirage and parallax errors.
Bulzeyepro state that their Optical Boosters will address and correct every known optical illusion experienced by scoped firearm shooters while improving safety, and increasing size and clarity of targeted image.
As we age, our shooting ability should not decline due to diminished eyesight. The Optical Booster can assist in restoring sight loss and increasing clarity of picture for all shooters and also improves firearm optics and their safety.
Hunters will enjoy quick, huge, clear, precise sight pictures with improved safety. Competitive shooters can add an enhanced ability to read mirage and adjust to zero parallax. Diabetics will also see all of this, along with a vast improvement in consistency and repeatability of shot.
Unlike an internal boosting job, you can simply remove the Booster if you want to return to the original magnification level.
In addition, the Boosters require no internal modification and will not effect the factory warranty.
Available Models
At this time there are two models available with more models to come shortly. The two existing models include the following:
1. Screw on model – Utilising the threads provided for lens caps on your rifle scope, a lens fixed in a threaded ring simply screws onto the rifle scope behind the eyepiece. This model is presently available for the Leupold competition series made after 2003, Weaver T series, Sightron BR series, Nightforce BR series, and March rifle scopes.
Below is an Optical Booster fitted to scope.
2. Slip on model with Interchangeable lenses – This model offers greater versatility where a rubber housing will fit any scope with an eyepiece diameter of 1.45” to 1.8”. Basically, this model will fit just about any 30mm and 1” tube rifle scopes.
This model provides the shooting enthusiast with the ability to move the Optical Booster from one scope to another. Also, a variety of lenses can be inserted in the flexible rubber housing. For example, you can switch from a 2.5X lens for say 300 yards shooting to a 4.5X Multicoated lens for extreme long range shooting without having to swap out scopes.
Below is a Slip-on rubber Optical Booster shown fitted to scope.
BulzEyePro Guarantee
In addition, BulzEyePro state that if you are not satisfied with your Optical Booster for any reason, simply return the booster within 45 days of the purchase date for a full refund of the item purchase price.
Further information regarding availability will be highlighted soon at www.moaperformance.com. So bookmark our web page for up-dates on the release date or email us at moa@moaperformance.com