Thanks Larry: Makes perfect sense, just fire up the torch :rolleyes:
Lest anyone believe that is my 870, I got lazy and grabbed a google image for illustrative purposes.

Now the opposite issue and then I am armed to tackle the job, if I can remember the combination for the safe. A high vent rib above the receiver. My first assumption is the extended top of the rib is the line from which to take the measurements.
Another google image, much prettier than the old family 870

So, in reading this thread and thinking of measuring my shotguns to see what the differences are that I manage to adapt myself to when shooting them, just thinking about doing it became a chore. So I asked google to help and look what showed up HERE
Cheers,
Jack

makes my old yardstick and ruler look state of art.

now i know why my old gun only has a partial burnt stock on it..ha good luck with the torch... charlie

"Plumb, Level, In Square"???
 

The door jamb 90% angle trick ONLY is valid if your framing square (invented by a Massachusetts blacksmith in 1824- from Framing-ham no doubt) tells use the door jamb is dead nutz plumb. I've done baggo volunteer carpentry work for H4H on renovation of older houses- wood moves with weather and over time, so if your framing square tells you the jamb and the floor or sill plate are at a true 90%, then you have an accurate way to aproximate the pitch- and the longer the barrels with the same stock, the lesser the pitch-

ie: My older 2E Smith- original 30" barrels will show DAC of 1& 5/8" and DAH of 2 & 1/4"- it was a live bird gun-still is today-, but owner sent it back to Fulton in 1927 and had a set of factory Nitro 32' BARRELS WITH FACTORY VENTILATED RIB fitted- 3" chambers, reinforcing yoke and Full & Fuller chokes- so, if I measure from the wall to the top of the ventilated rib, I get a slightly different reading a than if I measure to the top of the muzzle(s) a la Murphy's Law of Pitch measuring--

I am very accurate with my measurements and also construction nomenclature- ie" In the Stephen King- Peter Strauss novel "Black House" our "State of Mainer" author mis-used the stair layout terms- he got it bass-ackwards- treads are what you put your feet on to ascend or descend, the risers are the back than enclosed the stair carriage on finished work-and the nose is the rounded overhang of the tread as it is installed on the carriage-- but, other than that, it was still a good read, if you like WI bikers and craft beers--:bigbye::):bowdown::crying::eek::bigbye::cool::p

I still suffer "yardstickophobia", since school days. That makes me a bit younger than those who remember the "hickory stick".

Cheers,
Jack

Or Sister mary de la fridg-a-dare-ah!!
 

Them nasty Penguins loved to smash our knuckles with rulers- Nuns- probably grew up believing all boys were bad to the bone- which, in retrospect, might have been true--:rolleyes::rolleyes::rolleyes:

Francis

A framing square will only indicate the portion of the jamb that it is in contact with is plumb IF the floor is truly level. You need an appropriately sized (6'6" being the standard) level to determine if a jamb is plumb. Even then, most jambs aren't perfectly true with regards to being a perfectly straight even surface.

Cheers
Marcus

So....... if all is level, plumb, square and the pitch is correctly measured, cast dac, dah, lop and even drop at cheek is the perfect fit for you and you still miss the bird, is it then the fault of the ammunition????? Is there ever a point where the fault actually lies with the shooter??? I need all the excuses out there.
Cheers,
Jack

Yup- that's why I use a 6 ft 6" Stabila level
 

--for truing up jambs- lotsa times the 'rough-in' and then the installation of the windows and doors (prior to the J channel and then siding crew arrive)- the jack and king studs can dry out and warp- that's why we have shims- and the old rules are right- ie: "A level never lies", and "Always use the longest level you can"-- work-- but I wanted to get the framing square and Framingham, Mass bit worked in--first think we do with the 'rookie cookies" on the H4H Vol crews- we check their tape rules, levels and squares against ours-- a framing square with a 1" wide 16" long tongue and a 2" wide 24" long blade is a true 90% at one point, you are correct about that--and common and king rafters run off the 12" mark, jack and hip rafters off the 17" mark- thanks to some Greek dude name o Pythagorean, so I hear--:bigbye::bigbye::bigbye::bigbye::bigbye: