Doc
Member
how do i calculate length of pull for a rifle?
does it matter?
does it matter?
length of pull
- Thread starter Doc
- Start date
- Status
Mike Hull
Member
Generally it's the length from the inside of your elbow joint, to the last(just before the tip)joint on your index(trigger) finger, with the arm bent 90 degrees, palm towards you and upper arm at right angles to the body(almost like you were flexing your biceps).
It can be a little misleading though, as it's not always the most comfortable stock length for your shooting comfort.
Mine, for example, measures 14 3/4", but I'm most comfortable with a 13 1/2" LOP. Everybody's different though.
Edited to add; I didn't answer your question! LOP on a rifle is measured from the center rear of buttstock, to the inside rearmost part of the trigger.
It can be a little misleading though, as it's not always the most comfortable stock length for your shooting comfort.
Mine, for example, measures 14 3/4", but I'm most comfortable with a 13 1/2" LOP. Everybody's different though.
Edited to add; I didn't answer your question! LOP on a rifle is measured from the center rear of buttstock, to the inside rearmost part of the trigger.
Fred Fuller
Moderator Emeritus
Length of pull is better measured on the rifle rather than the shooter...
lpl/nc
=====
http://www.custompistols.com/bengtson/articles/scope.HTM
LENGTH OF PULL
While not usually thought of as one of the factors in selection of a scope, this is a prime factor in the operation of the rifle system that the scope is attached to. The length of pull on a rifle stock is the distance from the front of the center of the trigger to the rear of the center of the butt. The "average" length of pull is 13 1/2", but can vary from 13 - 14 1/2". Sometimes an individual will decide that he needs a recoil pad on his rifle. He will remove the old butt plate and then screw on a recoil pad and sand it down to fit the contours of the stock. When this happens without shortening the stock, the length of pull is increased. If the rifle fit the shooter before, it will not now. Additionally, if the eye relief of the scope was correct before, it is probably not correct now. Proper length of pull differs for each individual, although most can use the standard 13 1/2" fairly well. It also differs with the amount of clothing worn when shooting. A rifle that fits perfectly when shot during the summer in a light shirt would be too long when used with heavy winter clothing. A rifle set up for winter would probably be too short when fired in summer. But, length of pull is critical to the placement of the cheek on the stock and controls whether the eye will be properly positioned in relation to the scope.
There are four ways of handling this situation. The first (probably the most common) is to only shoot your rifle during hunting season. The second is to have one rifle for use in summer and another, similar, rifle for use when hunting big game. A pair of rifles, one in .223 and another in 30-06 having the same scopes, the same type stocks, etc. is another common solution. The third solution is to set the rifle up for winter use and to use a slip on type recoil pad during the summer. The last solution is to get two recoil pads fitted to the rifle. One a thin pad for use in the winter and the other a thicker pad for installation in the summer. Regardless of the solution chosen, the objective is to keep the face positioned at the same point under all conditions. Only after this is accomplished can we begin to deal with the variables of eye relief and eye piece assembly length.
lpl/nc
=====
http://www.custompistols.com/bengtson/articles/scope.HTM
LENGTH OF PULL
While not usually thought of as one of the factors in selection of a scope, this is a prime factor in the operation of the rifle system that the scope is attached to. The length of pull on a rifle stock is the distance from the front of the center of the trigger to the rear of the center of the butt. The "average" length of pull is 13 1/2", but can vary from 13 - 14 1/2". Sometimes an individual will decide that he needs a recoil pad on his rifle. He will remove the old butt plate and then screw on a recoil pad and sand it down to fit the contours of the stock. When this happens without shortening the stock, the length of pull is increased. If the rifle fit the shooter before, it will not now. Additionally, if the eye relief of the scope was correct before, it is probably not correct now. Proper length of pull differs for each individual, although most can use the standard 13 1/2" fairly well. It also differs with the amount of clothing worn when shooting. A rifle that fits perfectly when shot during the summer in a light shirt would be too long when used with heavy winter clothing. A rifle set up for winter would probably be too short when fired in summer. But, length of pull is critical to the placement of the cheek on the stock and controls whether the eye will be properly positioned in relation to the scope.
There are four ways of handling this situation. The first (probably the most common) is to only shoot your rifle during hunting season. The second is to have one rifle for use in summer and another, similar, rifle for use when hunting big game. A pair of rifles, one in .223 and another in 30-06 having the same scopes, the same type stocks, etc. is another common solution. The third solution is to set the rifle up for winter use and to use a slip on type recoil pad during the summer. The last solution is to get two recoil pads fitted to the rifle. One a thin pad for use in the winter and the other a thicker pad for installation in the summer. Regardless of the solution chosen, the objective is to keep the face positioned at the same point under all conditions. Only after this is accomplished can we begin to deal with the variables of eye relief and eye piece assembly length.
rbernie
Contributing Member
It depends on your definition of 'better'. If you want to know what the length of pull is for a specific rifle - measure the rifle. If you want to find out what the boimetric optimum (or at least starting point for tuning) of length-of-pull is for the shooter, measure the shooter.
Last I checked, it's easier to change the LOP on a rifle than it is to redesign your anatomy to fit the rifle..
MrAcheson
Member
I believe what he is saying, is that the biometric stuff is often bunk. I've heard of various methods for determining your length of pull by measuring arms or what-have-you. They may be good for giving you a ballpark figure, but I've never seen a professional fit a stock that way. They always look at the gun on your shoulder and go from there. Fitting a stock properly is more complex than just one number anyway.
- Status