10 ml breech plug

[quest4170]

How many rounds does a breech plug last 200 rds? 300 rds? I've been changing vent liner every 80 or so rounds but never changed plug

[ET]

Feb 17, 2020 11:12:17 GMT -5 quest4170 said:

How many rounds does a breech plug last 200 rds? 300 rds? I've been changing vent liner every 80 or so rounds but never changed plug

There is no set rules for this. Nor am I aware of anyone having to change the BP unless the vent threads in the BP are damaged.

Ed

[jims]

A Savage breechplug IMO can last almost indefinitely as long as one does not get erosion on the plug. I have seen that on two used Savages I purchased. If there is a poor seal and gas cuts the front of the breech plug. Also had the primer opening eggshaped on one. Had to replace those two but unsure how many shots, type of shots, powder used, cleaning etc. On my breechplugs I have never had any wear other than the vent liners. Changed mostly to the tungsten/carbide inserts to do away with that problem.
I did once go 80 or 100 shots on a vent liner early on without realizing the accuracy problems I was having. It would fire but the groups opened up so I never went that long later and now use mostly the bushing types except for a couple with the ventliners that shot so well I did not want to switch them over. Also shoot some so infrequently that I might only change the vent liner every five years or so.