Rigby Question

[Texgun]

Hello all.
 I need some information about a 275 Rigby I recently purchased. I am always concerned about matching serial numbers. The action and floor plate have a four digit number stamped on them (3175) and the bolt only has two numbers. The two numbers on the bolt are the same as the same numbers as the middle two on the other parts (17). Would this configuration mean that the serial numbers are matching?
Thanks. 

[mcwoodduck]

Not sure what you have.
The 275 Rigby is a ctg not a model.  275 Rigby was the English name for 7X57 Mauser.  Much like 308 Win is called 7.62X51
And much like 308 Win a few makers made rifles chambered in it.  Even Mauser sent Sporting rifles to England marked 275 Rigby.
Pictures would help. 
If the rifles are Mauser some of the numbers on the parts are not serial numbers they are Bin numbers.  That part came out of Bin XXX as 93, 95, 96, and 98's and all the variations of them were all being made at the same time.
 

[J.G.Terry]

Commercial Mauser actions were numbered on bottom of receiver, root of bolt handle and perhaps other places. When a maker built up the rifle using the action often another number was placed on the side of the receiver.  This is based on personal observations of a limited number of samples.