Front sight problem

[Pyno&dyno]

Thanks everybody for the help, since I have read of several action broken during the barrel removal and not being an expert I opted for the key modification. The gun was imported from Denmark coming from Danish army surplus and on the action there are visible sign of a vice. Because the gun had no valid proof stamp had to be tested . Commonly routine is that they shoot 2 times with a reload that exceed by 25-30% the maximun CIP limit for the caliber. Because the barrel has a small rust spot probably will change it, but first I want to test it properly with reload because it seems that the rust spot doesn't affect much the precision. Of course I will not import the barrell from US because is quite complicate(but not impossible). Have heard that are avalaible Lothar Walther Barrell but have not much information about. Over here the milsurp championship is growing fast, the most used guns are Carl Gustav, but I would like to give a chance to a M1917

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[Chuckindenver]

Thanks everybody for the help, since I have read of several action broken during the barrel removal and not being an expert I opted for the key modification. The gun was imported from Denmark coming from Danish army surplus and on the action there are visible sign of a vice. Because the gun had no valid proof stamp had to be tested . Commonly routine is that they shoot 2 times with a reload that exceed by 25-30% the maximun CIP limit for the caliber. Because the barrel has a small rust spot probably will change it, but first I want to test it properly with reload because it seems that the rust spot doesn't affect much the precision. Of course I will not import the barrell from US because is quite complicate(but not impossible). Have heard that are avalaible Lothar Walther Barrell but have not much information about. Over here the milsurp championship is growing fast, the most used guns are Carl Gustav, but I would like to give a chance to a M1917

couple things...first,,clean your bore well, with solvent ect, and likely the rust will come out..
second..
the cracked 17 is more of a myth then fact, out of hundreds of 17,s that i have changed barrels on, i have yet to see one cracked from a barrel installation.
you can buy the tools to fix that barrel correctly from Brownells and they will ship them to you.
really, dont over think this..do it right..and the rifle will give you safe enjoyment for years and years, i doubt that your barrel will ever need replaced.
as for the proof?? 1917,s were 3.5% nickle steel and surfaced hardened, and proof tested when first assembled, so a re proof round isnt really needed.
i test fire all rifles that i rebarrel, only to check function and headspace.