Simply put, which chamber reamer is most suited to factory NRAA ammo loaded with 155 HBC's? Would such a reamer also be ideal for handloads using lapua brass?
And what is the go with the live pilot vs solid pilot? One better than the other?
Thank you
155 HBC reamers
Moderator: Mod
-
Longranger
- Posts: 255
- Joined: Sat Mar 02, 2013 9:49 pm
- Location: Queensland
- Has thanked: 18 times
- Been thanked: 18 times
-
williada
- Posts: 969
- Joined: Wed Jul 22, 2009 12:37 am
- Has thanked: 263 times
- Been thanked: 422 times
The problem with the solid reamer is that it must be able to pass up the bore. Beware of tight bores that do not allow the reamer to fit. On the other hand, piloted reamers have interchangeable pilots in various sizes that can be used with a wide variety of bore sizes. You can also turn down your own copper pilot to fit if you want to.
The pilots themselves are not the key to cutting an accurate chamber because they must slide up the bore which may happen to vary in diameter just a tad to stick a tight fitting pilot. The pilot should never, never be a tight fit. The presentation of the reamer to the bore is the main part, by way of pre-boring the chamber and cutting a small entrance angle for the reamer to follow. The reamer will follow that hole accurately. This is why machinists are not really concerned about the pilot too much and so theoretically there is no difference between a piloted reamer and the solid reamer as they should be both setup the same way with a pre-bore. Ideally in a four jaw chuck with the alignment to cut concentrically with where the projectile lies in the throat.
Sure you can use a piloted reamer in a three jaw chuck, but this is less than desirable.
The pilots themselves are not the key to cutting an accurate chamber because they must slide up the bore which may happen to vary in diameter just a tad to stick a tight fitting pilot. The pilot should never, never be a tight fit. The presentation of the reamer to the bore is the main part, by way of pre-boring the chamber and cutting a small entrance angle for the reamer to follow. The reamer will follow that hole accurately. This is why machinists are not really concerned about the pilot too much and so theoretically there is no difference between a piloted reamer and the solid reamer as they should be both setup the same way with a pre-bore. Ideally in a four jaw chuck with the alignment to cut concentrically with where the projectile lies in the throat.
Sure you can use a piloted reamer in a three jaw chuck, but this is less than desirable.
Menu
Newest members