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How to Pattern a Shotgun + Video

Shotgun patterns are measured at 40 yards for all gauges, except .410 bore. .410’s are patterned at 30 yards. Patterning is a simple process, but time consuming due to all the counting required. Here is the correct way to pattern a shotgun.pattern2

  1. Set a big piece of blank paper on a frame 40 yards from the muzzle. (Butcher’s paper cut into 48″ squares works well.)
  2. Shoot at the center of the paper.
  3. Draw a 30″ diameter circle around the center of the resulting pattern, so that it encloses the greatest number of holes.
  4. Count the pellet holes in the circle. (It helps to mark the holes with a magic marker as you count them, so you don’t lose your place.)
  5. Cut open an identical, unfired shell and count the pellets in the shell. (The actual number of pellets may vary from the theoretical number based on shot size and weight, so it is best to count them.)
  6. Calculate the percentage of pellets that hit in the 30″ circle. (Divide the number of holes by the number of shot in the unfired shell.)

That is it; you have now officially patterned your shotgun. Of course, every shot varies, so ideally you should repeat the process 10 times and average the results. (Analogous to shooting a group with a rifle, rather than just one shot.) Your shotgun’s pattern percentage will vary if you change the shot size, the amount of shot in the shell or the hardness of the shot, so you need to pattern all the loads you actually shoot in a given gun.

Pattern percentages will usually (but not always!) go up if you increase the hardness of the shot, decrease the weight of the shot charge, buffer the shot inside the shell, or decrease the muzzle velocity of the shot charge. Pattern percentages will typically do down if you use softer shot, increase the weight of the shot charge or increase the muzzle velocity of the load. These generalizations primarily apply to traditional lead shot, your gun may vary.

pattern1The percentage of pellet strikes that constitutes what choke varies, depending on the source. These percentages are typical:

  • Full Choke: 70% or higher
  • Improved Modified: 65%
  • Modified: 55-60%
  • Skeet No. 2: 55-60%
  • Quarter Choke: 50%
  • Improved Cylinder: 45%
  • Skeet No. 1: 35-40%
  • Cylinder: 35-40%

 

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How to Pattern a Shotgun + Video

Shotgun patterns are measured at 40 yards for all gauges, except .410 bore. .410’s are patterned at 30 yards. Patterning is a simple process, but time consuming due to all the counting required. Here is the correct way to pattern a shotgun.pattern2

  1. Set a big piece of blank paper on a frame 40 yards from the muzzle. (Butcher’s paper cut into 48″ squares works well.)
  2. Shoot at the center of the paper.
  3. Draw a 30″ diameter circle around the center of the resulting pattern, so that it encloses the greatest number of holes.
  4. Count the pellet holes in the circle. (It helps to mark the holes with a magic marker as you count them, so you don’t lose your place.)
  5. Cut open an identical, unfired shell and count the pellets in the shell. (The actual number of pellets may vary from the theoretical number based on shot size and weight, so it is best to count them.)
  6. Calculate the percentage of pellets that hit in the 30″ circle. (Divide the number of holes by the number of shot in the unfired shell.)

That is it; you have now officially patterned your shotgun. Of course, every shot varies, so ideally you should repeat the process 10 times and average the results. (Analogous to shooting a group with a rifle, rather than just one shot.) Your shotgun’s pattern percentage will vary if you change the shot size, the amount of shot in the shell or the hardness of the shot, so you need to pattern all the loads you actually shoot in a given gun.

Pattern percentages will usually (but not always!) go up if you increase the hardness of the shot, decrease the weight of the shot charge, buffer the shot inside the shell, or decrease the muzzle velocity of the shot charge. Pattern percentages will typically do down if you use softer shot, increase the weight of the shot charge or increase the muzzle velocity of the load. These generalizations primarily apply to traditional lead shot, your gun may vary.

pattern1The percentage of pellet strikes that constitutes what choke varies, depending on the source. These percentages are typical:

  • Full Choke: 70% or higher
  • Improved Modified: 65%
  • Modified: 55-60%
  • Skeet No. 2: 55-60%
  • Quarter Choke: 50%
  • Improved Cylinder: 45%
  • Skeet No. 1: 35-40%
  • Cylinder: 35-40%

 

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How to Pattern a Shotgun + Video

Shotgun patterns are measured at 40 yards for all gauges, except .410 bore. .410’s are patterned at 30 yards. Patterning is a simple process, but time consuming due to all the counting required. Here is the correct way to pattern a shotgun.pattern2

  1. Set a big piece of blank paper on a frame 40 yards from the muzzle. (Butcher’s paper cut into 48″ squares works well.)
  2. Shoot at the center of the paper.
  3. Draw a 30″ diameter circle around the center of the resulting pattern, so that it encloses the greatest number of holes.
  4. Count the pellet holes in the circle. (It helps to mark the holes with a magic marker as you count them, so you don’t lose your place.)
  5. Cut open an identical, unfired shell and count the pellets in the shell. (The actual number of pellets may vary from the theoretical number based on shot size and weight, so it is best to count them.)
  6. Calculate the percentage of pellets that hit in the 30″ circle. (Divide the number of holes by the number of shot in the unfired shell.)

That is it; you have now officially patterned your shotgun. Of course, every shot varies, so ideally you should repeat the process 10 times and average the results. (Analogous to shooting a group with a rifle, rather than just one shot.) Your shotgun’s pattern percentage will vary if you change the shot size, the amount of shot in the shell or the hardness of the shot, so you need to pattern all the loads you actually shoot in a given gun.

Pattern percentages will usually (but not always!) go up if you increase the hardness of the shot, decrease the weight of the shot charge, buffer the shot inside the shell, or decrease the muzzle velocity of the shot charge. Pattern percentages will typically do down if you use softer shot, increase the weight of the shot charge or increase the muzzle velocity of the load. These generalizations primarily apply to traditional lead shot, your gun may vary.

pattern1The percentage of pellet strikes that constitutes what choke varies, depending on the source. These percentages are typical:

  • Full Choke: 70% or higher
  • Improved Modified: 65%
  • Modified: 55-60%
  • Skeet No. 2: 55-60%
  • Quarter Choke: 50%
  • Improved Cylinder: 45%
  • Skeet No. 1: 35-40%
  • Cylinder: 35-40%

 

Follow our FISHING BLOG

WEB   RATES     FISH    HUNT    CABINS    PHOTOS
TESTIMONIALS    BROCHURE    HUNT BOOKLET

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