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Measuring LOP.


chacotawas
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Yet another question I'm afraid. It concerns what to me is a puzzle: the measuring of optimum fit. I tried to find references in the Search but to no avail, yet I'm sure this topic must've been done to death over the years. Apologies if that's a fact.

 

Confusion reigns. I'm given two ways of measuring my gun- this is distilled from umpteen YouTube vids., etc. These two ways are as follows. They seem to give two very different results for my recently acquired, secondhand Beretta A 302 semi-auto. which has a lop of 13 3/4". I'm of fairly normal build- a bit overweight at 15 1/2 stone and 6ft.tall.

 

I'm told that:

 

1. When I shoulder the gun there should be about 1 1/2" between my nose and the thumb of my right hand that grips the stock. About the width of two fingers. There is in fact nearer 4" between these two points. So, the gun's lop is about 3" too long. What? I look at videos illustrating this, and sure enough the bloke's nose is damn near opposite his right hand. To achieve that I'd need extensive reconstructive surgery.

 

2. This time, I'm taught to lay my right forearm, palm up, on a flat and level surface- the dining table. I've then to fit the butt into the crook of my arm and then lay the stock along my arm. The trigger will now be somewhere beside my outstretched hand. If the lop is spot-on, the front of the centre of the trigger should correspond with the crease that marks the end of the first joint of my finger- that's the joint nearest the tip of the finger. If I do this I find that the centre of the trigger corresponds with the crease that marks the position of the second, not the first joint. So, by this means of measuring, the lop of this gun is 1" SHORT i.e. it should be 14 3/4", not 13 3/4".

 

I'd be grateful if somebody could make sense of this for me, please. All I want is to develop a consistent gun presentation and to have this gun set so that it goes where I'm looking. I'm intending to ruin the day of the odd pigeon and the odd duck, no more than that. In fact, when I shoulder this gun I seem to be pretty close to looking right along the barrel i.e. I think it might be pretty close to spot-on.

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No 1.

 

No 2 is a load of rubbish.

Whilst I don't disagree at all with the above, go and see an experienced coach/fitter. Its the ONLY way to get properly sorted. Sounds to me like you have an unusual gun mount as 14 1/2 to 15" is more typical for a 6' person, but everyone is different.

Edited by JohnfromUK
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I am shorter and ahem heavier than you and shoot 15" LOP near as damm it! SO either my mother was an orangutan (sorry mum) or your not mounting the gun properly (or im not)

 

0.jpg

 

PS that not me....lol

Edited by HDAV
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Length of pull will depend on -

Length of forearm

length of upper arm

width of shoulder

slope of shoulder

shooting style/discipline

Single or double trigger

Straight hand or pistol grip

Probably another half dozen factors

In short there are ways of assessing what you need but it comes down to the individual and how he feels and his personal preference . A gun fitter can only suggest and make recommendation based on looking at you with the gun ,only you can say if it feels right .

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look on the cpsa web site and download the clay pigeon shooters handbook, i think its called the section on gunfit page 47 onwards (i think) is what you need. Still unsure take a lesson with a shotgun instructor trained in stance and gun fit. money well spent imho - cost from £25 to £40 is the going rate, anymore, you are buying someone a rolls royce. welsh warrior, on here, does it i believe

Edited by joecash
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