M-77

[rex1]

1973 i think. 270
first after 3-4 shots bolt had to be bumped pretty hard to open, took to local gun smith, said it had cooked oil in chamber, fixed it,
now 3-4 shots and it has to be bumped to close have not had a chance to return to smith.
any home fixes

 

[daveg.inkc]

Reloads or factory? My .270 does the hard to close sometimes. M77, 1980 vintage

 

[Shaggy357]

Sounds like possibly has oversized chamber which is allowing gases to escape and carbon to build up. OR, it is reloads that are sized in a pretty tight die so they do not fit the chamber. Brass sized down less than chamber specs can do the same thing, allow gases to escape and carbon to build up.

Could also be a rough spot in the chamber. Undersized nylon brush, wrapped in 0000 steel wool, dipped in Flitz or similar polish can really brighten up a fouled, dinged, or carboned up chamber.

My $.02

Steve