Crosman Air Pistol Owners Forum

Crosman air pistol - General => Crosman air pistol - General discussion => Topic started by: MartinDWhite on February 01, 2012, 08:05:00 PM

Title: 1377 project
Post by: MartinDWhite on February 01, 2012, 08:05:00 PM
My favorite 1377 with the following mods

Grips by RBGrips
"2 stage" sear by big ed machine
Red tigger from custom shop gun
Brass front plug by me
dowel pin (instead of roll pin) pivot at front
Brass Flat Top piston by me
Valve modified by me
10.5 inch barrel
RJ Machine Long breech
Rear plug with mount by me (for in process add on shoulder stock)
Bottom of grip mount by me (for in process add on shoulder stock)
much stronger hammer spring
lighter valve spring
Reddot on top to work as pistol (long eye relief) or carbine (short eye relief)

10 pumps is 595-598
20 pumps is 709

That is a lot of changes to get it to shot what the box said when I bought it several years ago.

(http://www.martinwhite.name/images/January_29_2012_17_07/IMG_0113.JPG)


Title: Re: 1377 project
Post by: eric on February 02, 2012, 02:33:27 AM
nice ,i love the blue laminate. we need RJ back  :(
Title: Re: 1377 project
Post by: breakfastchef on February 02, 2012, 03:16:29 AM
Quote from: MartinDWhite on February 01, 2012, 08:05:00 PM
That is a lot of changes to get it to shot what the box said when I bought it several years ago.
(http://www.martinwhite.name/images/January_29_2012_17_07/IMG_0113.JPG)


Agreed! They must test guns with balsa wood pellets. Nice job and excellent mod list.
Title: Re: 1377 project
Post by: tinker on February 02, 2012, 03:52:36 AM
Nice build :-*

Glen
Title: Re: 1377 project
Post by: 0351_Vet on February 03, 2012, 01:27:00 PM
Looking Good.  :-*
Title: Re: 1377 project
Post by: Cross Pistol Packer on February 03, 2012, 01:55:51 PM
Nice :)
What is the weight in grains of the pellets you are using ?
that will give us ftlbs of power your pistol is pumping out.
Ray.
Title: Re: 1377 project
Post by: MartinDWhite on February 03, 2012, 02:37:46 PM
That pistol loves Beeman FTS.

The weight listed on Beemans site is 9.2, making it 7.31 ftlbs.
The weight listed on PA site is 8.7, making it 6.91 ftlbs.

It is about a 7 ftlb pistol at 10 pumps and about 10 ftlbs at 20 pumps.
Title: Re: 1377 project
Post by: Cross Pistol Packer on February 03, 2012, 06:48:24 PM
Good numbers  :-* thats a hard hitting pistol.