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Vertical spread at 300m prone SCATT
Posted: Wed Feb 23, 2011 6:55 am
by tsokasn
Hello my friends!
After a big prone break,I fell down today for a 300m SCATT match.
I didn't expect any high scores,just an evaluation of my position.
I had a small pulse coming from the wrist(handstop hand)which gave me a vertical trace movement.
Could this be the cause of the vertical spread?
I must also mention that the trigger weight is a bit heavy (don't know exaxtly but much more than my small bore's)and it is the lightest setting on my 300er.(CISM standard 1.5kg trigger,with the weight spring removed.could be 200grams?)
Thank you!
Re: Vertical spread at 300m prone SCATT
Posted: Wed Feb 23, 2011 11:17 am
by KennyB
tsokasn wrote:
I had a small pulse coming from the wrist(handstop hand)which gave me a vertical trace movement.
Could this be the cause of the vertical spread?
Most likely.
What was the "F-Factor" set to?
Posted: Wed Feb 23, 2011 12:46 pm
by tsokasn
Hey Kenny!
I usually never change the F factor...
What do you suggest?
Posted: Wed Feb 23, 2011 1:24 pm
by KennyB
It's been a while since I used SCATT but the recommended figure of 65 comes to mind...
As I understand it, the F-factor scales how the muzzle's velocity at the moment of release transfers to the point of impact
So a value of Zero means that the shot goes where the barrel was pointing at the moment of release like a laser, whereas a high value will flip the bullet in the direction that the barrel is moving when the shot is fired as would happen to a bullet in real life.
If the F-factor is set too high it can exaggerate the effects of pulsing - I remember doing some live firing and comparing the POI to the SCATT POI and adjusting the F-Factor accordingly. I can't remember the value I ended up with though.
Bottom line though - get rid of the pulsing.
Posted: Wed Feb 23, 2011 1:39 pm
by WesternGrizzly
My coach has me set the F factor set to "0". If it is set at zero you can train JUST your hold. And once you get a solid hold you can begin to turn up the f factor so you can train your shot timing. I hope that makes sense.
Matt
Posted: Wed Feb 23, 2011 1:50 pm
by tsokasn
Thank's for the answers!
Posted: Wed Feb 23, 2011 5:09 pm
by dlinden
The Raab's recommend an F-setting for smallbore prone shooting in the range of 25-30. They import and sell the SCATT as well as coach a lot of people.
Dennis
Posted: Thu Feb 24, 2011 2:31 am
by David Levene
dlinden wrote:The Raab's recommend an F-setting for smallbore prone shooting in the range of 25-30. They import and sell the SCATT as well as coach a lot of people.
They are probably as well placed as anyone to suggest an f-coefficient for the 300m we are discussing here. It will not necessarilly be anywhere near the suggested starting point for smallbore.