help with gripping pistol grip/setting up trigger(air rifle)

Jordan1s · Post by **Jordan1s** » Mon Feb 06, 2012 2:17 am

Hello,

During my scatt training sessions, i am finding out that i'm losing many possible tens because of triggering(blue curve). My hold usually oscillates between a 9 o'clock 10.0 and a 3 o'clock 10.0(sometimes slightly more) so that doesnt seem to be the problem; but as soon as i take the shot, the shot pulls of in a random direction and usually results in a 9. Most of the 10's i do manage to make only happen because the blue curve pulled towards the center and not away from the center. The trigger is set to single stage and im not jerking the trigger, yet the shot usually pulls in a random direction. I've tried reading "air rifle shooting" but their guidelines for setting up the trigger still seem vague to me.

also too, i was wondering if there was a proper way to hold the pistol grip. For whatever reason, as soon as i take hold of the pistol grip, the stock automatically drifts to the right; I normally try to compensate by using slightly more upper body rotation, but after about 25 shots, doing this becomes quite painful for my lower back.

I'm shooting a FWB P700 universal so i am unable to adjust the pistol grip.

any help would be appreciated!!!!

thanks!

-Jordan1s

RobStubbs · Post by **RobStubbs** » Mon Feb 06, 2012 3:22 am

Sounds like you haven't quite got the position right. 9-3 O'clock could suggest sway and a bit of body movement. The gun should not move when you take up the grip, you should be holding quite lightly but firm enough to be secure. Also are you taking the shot or letting it break sub-consciously ? On Scatt what kind of trace movement do you have 0.3 seconds before the shot breaks ? Any acceleration in that time frame indicates that there is snatching going on. Lastly are you shooting live on the scatt or just dry ? - either way try doing the other if possible and see how they compare - can be useful for fault diagnosis.

Other useful info are what f-coefficient do you have set ? What is your trace length ? What is the elliptical factor value ?

Rob.

Jordan1s · Post by **Jordan1s** » Mon Feb 06, 2012 7:22 am

for last .3 seconds, did you mean the blue curve? for that, it always goes in a random direction. If you meant the yellow curve(last 1 second) that one is always circular for some reason. the shot does break sub-consciously. I dry fire at home during the week, and live fire on the range on the weekends. f-coefficient is set to 45, avg. trace length is 20.9. elliptical factor value for groups is 1.28 and for tracings its 1.8.

WesternGrizzly · Post by **WesternGrizzly** » Mon Feb 06, 2012 12:49 pm

I would set the F factor to 0. That way you are only training your hold.

You should get to the point where 100% of your attention is on the sight picture, and the shot just goes off subconsciously. This takes a lot of work.

I personally cant stand a single stage trigger, I have mine set up at about 150 grams with as much first stage length and overtravel the trigger will give me.

Generally the optimal trigger hand set up is as follows: 1. hand gripping firmly and evenly around the grip 2.the trigger lever lies at 90 degrees to the bore and is in the same plane as the bore at the point of shot release 3. The index finger lies relaxed at 90 degrees the the trigger at point of shot release 4. all movement comes from the middle joint of the finger.

Matt

RobStubbs · Post by **RobStubbs** » Mon Feb 06, 2012 1:11 pm

Jordan1s wrote:for last .3 seconds, did you mean the blue curve? for that, it always goes in a random direction. If you meant the yellow curve(last 1 second) that one is always circular for some reason. the shot does break sub-consciously. I dry fire at home during the week, and live fire on the range on the weekends. f-coefficient is set to 45, avg. trace length is 20.9. elliptical factor value for groups is 1.28 and for tracings its 1.8.

I meant the trace that shows average movement - I can't remember what it's called though will need to look it up.

<edit>
OK it was the co-ordination graph I was refering to. Oh and for reference 'trace length for top international shooters is under 10'

And copied from my coaching manual, re the elliptical factor;

"We are ideally looking for two numbers that are below 1.0 and as similar as possible. Numbers significantly larger than 1.0 can suggest a generally poor hold. Numbers that are different by more than a ratio of 2 to 1 indicate a likely problem with triggering."

Rob.