


August 30, 2010
Bourjaily: Patterning is Such a Grind
By Philip Bourjaily
Patterning shotguns is drudge work, although I have to admit getting a certainly geeky enjoyment out of counting the pellet holes in paper. The more you pattern guns, the more you wonder how it is we kill things and break targets so consistently with a shotgun. Like snowflakes and thumbprints, no two patterns are alike, and all of them have gaps. The perfect “even” pattern, with pellet strikes distributed across regular intervals, simply doesn’t exist.
Patterns are usually evaluated by looking at pellet strikes within a 30-inch circle. In reality, the killing part of a pattern is the 20-inch central core, and even there you will find gaps. As you can see by the picture, there are two gaps in the core of the pattern that a target could fly through unbroken (one pellet strike isn’t enough to break a clay. You need three).
I shot these with my trap gun and an Improved Modfied choke at 35 yards. I used a variety of target loads and, as always when I shoot patterns, I learned a couple of things:
Good quality target loads -- Remington STS, Federal Gold Medal Paper -- outpatterned less expensive Remington Gun Clubs.* In fact, a good 1 ounce load puts almost the same total number of pellets in the circle as a less expensive 1 1/8 ounce load does. The difference, I believe, is mostly due to the quality of the shot.
If I had to come up with a number of pellet strikes in a 20-inch pattern core that would virtually guarantee multiple hits on a clay target, I’d say you need 230 hits in a 20-inch circle at whatever range you’re shooting your birds.
And, as always, I learned that fooling with 4x4 sheets of paper on a windy day isn’t very much fun.
*That said, Gun Clubs are my favorite economy load. They perform well enough and the hulls are highly reloadable using STS data.
Comments (20)
Thanks Phil. As much as I like to think I missed a bird due to a hole in my pattern I would tend to lean towards my not-so-good shooting ability.
Two good things did happen at the range yesterday. 1) Woman and children out numbered the men. 2) I found a Rem 1100 in the back of my safe I never even knew I owned. It shot good to.
buckhunter
Since you did not know that you had the 1100, you won't miss it when you comp it to me, will you? LOL
Along these lines, I took a recently acquired demo Winchester SX3 out to the range on Saturday that I had yet to shoot, in addition to two rifles I needed to sight in. After a buddy of mine and I finished sighting in rifles, we headed up to the shotgun range to put a few shells through the SX3 on clays. I will admit to being a novice shotgunner, having shot very poorly in my one (first and only) sporting clays round that I shot earlier this year. Granted that round was shot with a pump 20 ga, so you would expect the score to be somewhat deflated, but not to the point where I scored. At any rate, I only had a couple of boxes of shells with me, but between the 30 or so shells that I shot and the 10 or so that I let my friend shoot, we missed exactly 1 each. We were both floored and he was convinced that he had to go get in the market for his own SX3 that day. This coming from a tried and true (and really quite gifted) Citori owner. I will reign this gushing review in by stating that I was using a clay thrower that was difficult to adjust, so there wasn't a lot of variation in the path of the clays, but still to hit 38/40 with a brand new (to us) gun, was amazing. I can't wait to get it to the sporting clays course and see how it does with crossing birds and rabbits!
WAM,
It tells you how often I'm into my gun safe. My annual dove hunt is this weekend so I blew some dust off a few of my shotguns at the range.
An old friend who used to write a few articles for low circulation shotgunning magazines patterned his guns, barrels, chokes, and loads for fun. If I was visiting him I found the conversation to be very disconnected due to his insistence upon finalizing whatever gun and load he was working with at that time. The little guy was a tremendous shot proving at least in part the value of his efforts.
No, no, no. Patterning is the grand experiment. Most useful things can be learned, even the discovery of shooter errors. Good time, well spent.
I don't mind patterning one bit. It involves shooting guns and "science" - two favorites.
Phil,
Always good stuff from you, just glad you did not ask me to help hold the paper !!
Auburn_hunter, while I am glad you enjoyed your experience with the SX3, please do not berate the pump 20 as inadequate gun for sporting clays.
My 20 year old son has no problem breaking clays ( especially rabbits ) using the youth 870 20 gauge I bought him several years ago.
Perhaps the problem lies with putting the muzzle in proper relationship to the target vs the type & gauge of the shotgun ?
I haven't shot a pattern that bad in at least 15 years.
Not since I discovered the extended forcing cone:
http://www.magnaport.com/sgun.html
The competition barrel package:
http://www.wrightsgunsmiths.com/
And the briley Spectrum extended ported choke tube.
http://www.midwayusa.com/Search/#Briley____-_1-2-4_8-16-32_3_16_Demand desc
Fuggedabout the holes in the pattern and the piss-poor shooting.
I can easily get my limit in doves and have 10 shells left!
Phil, after the last Gun Nut Show and telling the advantage of heavy shot got me thinking of the dense group a gnat wouldn't stand a chance with #6's for Turkey would difanatly be an improvement!
Who would have thought the more expensive quality load of one-ounce shot would offer comparable performance to the less expensive load of 1 1/8 ounce shot? Sometimes money really can buy happiness.
buckhunter
You are very fortunate. I have looked all through my safe and have not found an 1100 or any other gun I did not know I have. I have always wanted an 1100. I guess I will have to eventually BUY the darn thing (in left hand).
I've always been a decent wingshot but I bought a new shotgun that I couldn't seem to cut a feather with. Worst shooting of my entire my life so I patterned the gun and it was shooting TWO FEET high at 25 yards. The very bottom of the pattern was even with the aim point. Never seen anything like it.
Once I knew where the shot string was headed I was able to compensate by aiming low and I started nailing the birds again.
I asked the manager of my gun range recently about the need to take lots of shots if you are patterning...the guy says, yep, you do need to take a lot of shots. And every time I've done it, tighter is better.
DAMN! Now I know what happens on those occasional station 3 straightaways that break only when they hit the ground.
They miraculously happened to be in that 20" core center gap. Thanks, Phil; I needed that excuse.
PostScript- Read (or re-read)Bob Brister's Shotgunning: The Art and Science and find out why patterns shot at a stationary piece of paper aren't worth a damn except to determine point of impact. Try 14 foot long targets towed at 40 mph and see how much stringing of the shot charge is involved; another reason (besides lower recoil) that I shoot 7/8 oz. loads at trap.
And those gaps are why the birds i shoot out at 30 yards keep on flying, not enough pellets in the kill zone, or so i like to believe.
My idea of 'patterning' a shotgun is to shoot it at a dry dirt mound and see if the area of dust kicking up is reasonably even and centered where I was aiming.
nunyabinis: Same problem with a Baikal s/s 20ga. Had the front drilled & tapped for small cap screws (aka "post" front bead). Lovely shooter now.
Not to lead this thread into an unwanted area. I just wanted to say that my 9 year old. Shot 4 highflyers with his reputed mossberg 500 20 gauge. (using federal #2 steelshot improved cylinder) All four were within 30 yds. They came nicely over the decoys, but it was like he couldnt miss for a short time. I dont know if technological improvements can top young eyes and reaction time
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Thanks Phil. As much as I like to think I missed a bird due to a hole in my pattern I would tend to lean towards my not-so-good shooting ability.
Two good things did happen at the range yesterday. 1) Woman and children out numbered the men. 2) I found a Rem 1100 in the back of my safe I never even knew I owned. It shot good to.
buckhunter
Since you did not know that you had the 1100, you won't miss it when you comp it to me, will you? LOL
Along these lines, I took a recently acquired demo Winchester SX3 out to the range on Saturday that I had yet to shoot, in addition to two rifles I needed to sight in. After a buddy of mine and I finished sighting in rifles, we headed up to the shotgun range to put a few shells through the SX3 on clays. I will admit to being a novice shotgunner, having shot very poorly in my one (first and only) sporting clays round that I shot earlier this year. Granted that round was shot with a pump 20 ga, so you would expect the score to be somewhat deflated, but not to the point where I scored. At any rate, I only had a couple of boxes of shells with me, but between the 30 or so shells that I shot and the 10 or so that I let my friend shoot, we missed exactly 1 each. We were both floored and he was convinced that he had to go get in the market for his own SX3 that day. This coming from a tried and true (and really quite gifted) Citori owner. I will reign this gushing review in by stating that I was using a clay thrower that was difficult to adjust, so there wasn't a lot of variation in the path of the clays, but still to hit 38/40 with a brand new (to us) gun, was amazing. I can't wait to get it to the sporting clays course and see how it does with crossing birds and rabbits!
I haven't shot a pattern that bad in at least 15 years.
Not since I discovered the extended forcing cone:
http://www.magnaport.com/sgun.html
The competition barrel package:
http://www.wrightsgunsmiths.com/
And the briley Spectrum extended ported choke tube.
http://www.midwayusa.com/Search/#Briley____-_1-2-4_8-16-32_3_16_Demand desc
Fuggedabout the holes in the pattern and the piss-poor shooting.
I can easily get my limit in doves and have 10 shells left!
WAM,
It tells you how often I'm into my gun safe. My annual dove hunt is this weekend so I blew some dust off a few of my shotguns at the range.
An old friend who used to write a few articles for low circulation shotgunning magazines patterned his guns, barrels, chokes, and loads for fun. If I was visiting him I found the conversation to be very disconnected due to his insistence upon finalizing whatever gun and load he was working with at that time. The little guy was a tremendous shot proving at least in part the value of his efforts.
No, no, no. Patterning is the grand experiment. Most useful things can be learned, even the discovery of shooter errors. Good time, well spent.
I don't mind patterning one bit. It involves shooting guns and "science" - two favorites.
Phil,
Always good stuff from you, just glad you did not ask me to help hold the paper !!
Auburn_hunter, while I am glad you enjoyed your experience with the SX3, please do not berate the pump 20 as inadequate gun for sporting clays.
My 20 year old son has no problem breaking clays ( especially rabbits ) using the youth 870 20 gauge I bought him several years ago.
Perhaps the problem lies with putting the muzzle in proper relationship to the target vs the type & gauge of the shotgun ?
Phil, after the last Gun Nut Show and telling the advantage of heavy shot got me thinking of the dense group a gnat wouldn't stand a chance with #6's for Turkey would difanatly be an improvement!
Who would have thought the more expensive quality load of one-ounce shot would offer comparable performance to the less expensive load of 1 1/8 ounce shot? Sometimes money really can buy happiness.
buckhunter
You are very fortunate. I have looked all through my safe and have not found an 1100 or any other gun I did not know I have. I have always wanted an 1100. I guess I will have to eventually BUY the darn thing (in left hand).
I've always been a decent wingshot but I bought a new shotgun that I couldn't seem to cut a feather with. Worst shooting of my entire my life so I patterned the gun and it was shooting TWO FEET high at 25 yards. The very bottom of the pattern was even with the aim point. Never seen anything like it.
Once I knew where the shot string was headed I was able to compensate by aiming low and I started nailing the birds again.
I asked the manager of my gun range recently about the need to take lots of shots if you are patterning...the guy says, yep, you do need to take a lot of shots. And every time I've done it, tighter is better.
DAMN! Now I know what happens on those occasional station 3 straightaways that break only when they hit the ground.
They miraculously happened to be in that 20" core center gap. Thanks, Phil; I needed that excuse.
PostScript- Read (or re-read)Bob Brister's Shotgunning: The Art and Science and find out why patterns shot at a stationary piece of paper aren't worth a damn except to determine point of impact. Try 14 foot long targets towed at 40 mph and see how much stringing of the shot charge is involved; another reason (besides lower recoil) that I shoot 7/8 oz. loads at trap.
And those gaps are why the birds i shoot out at 30 yards keep on flying, not enough pellets in the kill zone, or so i like to believe.
My idea of 'patterning' a shotgun is to shoot it at a dry dirt mound and see if the area of dust kicking up is reasonably even and centered where I was aiming.
nunyabinis: Same problem with a Baikal s/s 20ga. Had the front drilled & tapped for small cap screws (aka "post" front bead). Lovely shooter now.
Not to lead this thread into an unwanted area. I just wanted to say that my 9 year old. Shot 4 highflyers with his reputed mossberg 500 20 gauge. (using federal #2 steelshot improved cylinder) All four were within 30 yds. They came nicely over the decoys, but it was like he couldnt miss for a short time. I dont know if technological improvements can top young eyes and reaction time
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