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Airgun discussions including customizing your guns and sport shooting
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ExoticWoody
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Joined: 20 Jan 2007
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 Posted: Thu Jun 05, 2008 3:37 pm Post subject: Kill Zone relation to placement of FT targets downrange |
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What would be the average distance for an FT target with 5/8' Kill Zone be set out to at a match? TIA
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CJN
FT Moderator
Joined: 30 May 2008
Posts: 82
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Location: Southern Ontario
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| Posted: Thu Jun 05, 2008 4:03 pm Post subject: Re: Kill Zone relation to placement of FT targets downrange |
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| ExoticWoody wrote: | | What would be the average distance for an FT target with 5/8' Kill Zone to be set out to at a match? TIA |
In FT we use a difficulty rating system called the "Troyer scale", named after Brad Troyer, a US FT shooter who brought forward this system of difficulty rating.
It is a simple mathematical equation of "distance divided by KZ size":
- 5/8 (.625) at 30 yards= 48 Troyer difficulty.
- .50 inch at 30 yards = 60 Troyer
- 1 inch at 30 yards = 30 Troyer
Brad Troyer gave these figures as Target Difficulty Ratings:
0-20=Easy
20-30=Moderate
30-40=Hard
40 and up=Expert
From memory, our the last 12 months of CAFTA matches have averaged from 28-45 Troyer Difficulty.
Using those numbers (28 and 45), your 5/8 inch KZ target would be placed at 17.5 yards (28 Troyer) to 28.5 yards (45 Troyer).
Some of our CAFTA match targets have been as low as 15 Troyer and as difficult as 65 plus Troyer.
Placement is really up to you! |
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ExoticWoody
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| Posted: Thu Jun 05, 2008 4:27 pm Post subject: |
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Thanks for the info CJN...
At the last match where a forced shooting position was marked on a few lanes, I seem to recall the Troyer scale being used to factor the level of difficulty of a given shot.. While on the topic of Troyer Scale, can someone elaborate on how a specific shooting position impacts on that scale?..
TIA
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CJN
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| Posted: Thu Jun 05, 2008 6:06 pm Post subject: |
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| ExoticWoody wrote: | Thanks for the info CJN...
At the last match where a forced shooting position was marked on a few lanes, I seem to recall the Troyer scale being used to factor the level of difficulty of a given shot.. While on the topic of Troyer Scale, can someone elaborate on how a specific shooting position impacts on that scale?..
TIA |
Sure...
Standing = difficulty x 2
Kneeling = difficulty x 1.5
Substantial Up or Down = difficulty x 1.25
Windy = difficulty x 1.25
Extreme bright (sunny) or dark = difficulty x 1.125
IF some of these factors are combined, then add them together. For example:
- if windy AND extreme up angle = difficulty x 1.5 |
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Keyrigger
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Joined: 27 May 2008
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Location: Mississauga, Ont.
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| Posted: Thu Jun 05, 2008 8:51 pm Post subject: |
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To add a bit of info to this thread, most of the high difficulty matches we had last year, were not high numbers because the match was extremely difficult, but because the easiest "Gimme" type targets, like a 1.5" target at 20 yards, were not placed in those matches. Because of that, the match looks completely different when viewed strictly by the Troyer number. We went out of our way to make sure that all shots needed your full attention as a number of us were preparing for the World Championships.
Mind you, the scores on that really high Troyer factor match, pointed out to us that we still needed to work a bit more. I should have seen the writing on the wall about the accuracy problem I was having with the pellets I was using, but at the time, I chalked it up to my very sore shoulder and wrist. Who knew.
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Keyrigger
CAFTA Governor
When you are long winded, is that a sign of Wisdom or Old Age? |
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ExoticWoody
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| Posted: Tue Aug 12, 2008 11:35 pm Post subject: |
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From what I've read and heard, It's up to the person who actually brings out the targets for lanes to place them?....
So would a rule of thumb be to have the target placed so on averaged 28-45 Troyer Difficulty is the mark one is aiming for?.... TIA
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Mac
Joined: 26 May 2008
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Location: Port Colborne
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| Posted: Wed Aug 13, 2008 1:52 am Post subject: |
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| ExoticWoody wrote: | From what I've read and heard, It's up to the person who actually brings out the targets for lanes to place them?....
So would a rule of thumb be to have the target placed so on averaged 28-45 Troyer Difficulty is the mark one is aiming for?.... TIA |
What you have said may not be far off for many guys who set up lanes.
I do not really have a science to how I set up a lane. I choose three targets and start walking down the lane. I choose a good spot for the first target and proceed to the second and so on. I never measure them before a match. Anyone who has shot with me knows that I put the measurements, from the scope, for the lanes and the size of the killzone on a spare scoresheet as I shoot the match. Once in a while I will purposely set an easy one or a very difficult one. I try not to set targets at the same distance in two different lanes, such as a 15 yard shot stating two consecutive lanes. After setting the targets I look down the lane from the shooting box to get a general idea of the difficulty of the lane. But you never really know until you sit down on the lane to shoot.
I have set lanes with the average difficulty in the low twenties and I have set lanes where the average was in the mid to high fifties. Dennis set up a half inch killzone up in a tree on a windy day. That is a 90T shot.
The upcoming match in Port will have a blend of easier, medium, difficult and very difficult. The average will probably land in the thirties. There will be good scores, but it would really surprise me if someone cleaned the course.
I really like the fact that three other guys are setting up lanes for the matches. When I get to those lanes it is the first time I have seen them, the same as most of the people at the match. I do not go and check out the other guy's lanes. I like the idea of seeing a target for the first time and trying to hit it. It is very good practice for big matches I travel to in the States.
I am sure everyone that sets lanes has a rational for placing targets, This is just the way I set mine.
Tim |
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