Since the mod 37 is a pump gun and the 51 is semi-auto, if it fits then it is a coincidence.
The Model 37 is a pump gun, and the 51 is a semi-automatic. I doubt seriously that the barrels are interchangeable, since they are totally different models.
Well, first of all the serial number given is for a model 37 and not the model 51. All model 51s serial number begin with 5100. Since your begins with 37 would you not believe that it is a model 37. Your model 37 was mfg circa 1975.
37% of 51 = 37% * 51 = 0.37 * 51 = 18.87
18.8737% of 51= 37% * 51= 0.37 * 51= 18.87
37/51
37/51 is in its simplest form.
www.ammoclip.com/R/remington_51.htm
10a-37=6a+51 -6a -6a subtract 6a from both sides and the 6a's cancel 4a-37=51 +37 +37 4a=88 /4 /4 a=22
Never heard of a model 50, model 51 yes, but, no model 50. There is a model 50. It is a like the 51 but without the mannlicher stock. http://home.epix.net/~damguy/exploded.htm It was also made for Wards Western Field as the model 04m-489a The 51 has an S100 receiver peep sight as does the 51m (full Mannlicher style stock). The rear sight on the model 50 has the barrel mounted one adjustable for windage and elevation. Check out: http://home.epix.net/~damguy/models.htm
37 goes into 51 once with a remainder of 14. This can be calculated by dividing 51 by 37, which equals 1 with a remainder of 14.
37