D
Dog's Elvis
Guest
When re-barreling a Sako Riihimaki, the L46, should there be a relief cut at the breach end of the barrel to allow clearance for the extractor?
I usually grind the tip of the extractor slightly and fit the barrel close to that with about 2 thou clearance and leave the end of the barrel just faced flat.
Had a Sako L-46 ( serial # 336xx) re-barreled several yrs ago. The gunsmith duplicated the relief cut on the face of the barrel, identical to the original barrel. No problem, no xtra charge. Very recently had another Sako L-46 ( serial 488xx) re-barreled and that gunsmith make a circular cut around the whole circumference of the chamber opening. he explained to me that he did not have the tool/cutter to make the Sako extractor relief cut, and found the circular cut to work fine. Went back twice, for extractor work; first time, the extractor would sometime leave an empty, fired case in the chamber, easily pushed out w/ cleaning rod. "Modification" to the face of the extractor solved that problem. Then it went back again: extremely hard bolt closing on a loaded round, ( even a factory round). More "modification" & all is well now. Spoke to another 'smith ( 40 yrs experience), and he told me he would have to make a special cutting tool to duplicate the Sako cut, and there would have to be a hefty charge. First 'smith must have already had the cutter?
Dennis, how much clearance does that leave you with between the bolt nose and the barrel? I would think it would have to be a signifcant amount. I'm not doubting you but I am fixing to do one myself and plan to cut the extractor relief in a mill with a beveled end mill to leave all the support that I can for the case. Needless to say, that ain't gonna be fun. How much unsupported case is acceptable in your opinion? Am I missing something here? I appreciate your input. Thanks---Mike Ezell