ORIGINAL: cayugad
Also in regards to the Savage.. since I know so little about them but admit they do interest me.
How often do you have to change the vent liner and just what does this vent liner actually do? Is a vent liner expensive? Also I read a post where someone did not seat the projectile hard enough and got a misfire because of that. I should have asked them but is there something to remember about seating the projectile?
The vent liner is replaced every 100 shots--whenever the hole goes above a certain number .035. The vent liner is basically the little hole that your primer shoots thru to ignite the powder. With a regular breech plug,it is the hole, which is build into the breech plug. With smokeless because of the higher pressure, they wear a breechplug hole out very quickly, hence the work around is a vent liner. Cost from Savage is about $4. You can buy better breech plug liners, Randy Wakeman sells them that last a lot longer. Breech plugs for the Savage are about $28 bucks I think.
Yes, seating a projectile on a charge with Smokeless is a lot different than BP, because BP ignites so well. With smokeless unless it is compressed down, it doen't ignite well. Also the sabot must be tight, now how tight is the question. Well they say 30 lbs of force, that is why I make up my little "goldilocks example", because too loose (like a Parker BE) and the powder will not ignite and too tight (like the TMZ) and the bullet will not go down. Just right is real tight, but not push down with 1 hand tight.
Chap