BTO vs ogive to seating stem

[BoydAllen]

Fellows,
I may be wrong, but I think what I am reading is a misuse, and or misunderstanding of the meaning of the word ogive as applied to a bullet. The ogive is that part of the bullet that runs from the forward end of the parallel part of the bullet, to its tip, or more properly meplat. The entire curve at the front of the bullet is the ogive, not just where the rifling engraves, or where the common comparators make contact. Properly fitting seater stems make contact on bullets' ogives nearer the tip of the bullet than where the rifling will engrave, or comparitors make contact.

 

[broncman]

OK, I am with Boyd on this.
I am referring to o the datum line that comparator's such as hornady use for each caliber. When you use the standard comparator's such as Hornady, this is the area measured. I know of no seating die that uses that dimension. I have a Redding Competition die and it may seat on the ogive , but not on the datum line most commonly referred to as the "ogive" when one is talking about comparator's.

 

[michaelnel]

OK, I am with Boyd on this.

No, actually, I don't think you are. ;-)

 

[broncman]

OK, I am with Boyd on this.

??????
Yes , the misunderstanding/miss use part! Hope that and my previous post clears up any future misunderstanding or miss use of the way I was referring to ogive....

Geez dude... Lighten up. This is not Arfcom or Pirate. Have fun and go shooting!
No, actually, I don't think you are. ;-)

 

[CatShooter]

Fellows,
I may be wrong, but I think what I am reading is a misuse, and or misunderstanding of the meaning of the word ogive as applied to a bullet. The ogive is that part of the bullet that runs from the forward end of the parallel part of the bullet, to its tip, or more properly meplat. The entire curve at the front of the bullet is the ogive, not just where the rifling engraves, or where the common comparators make contact.

Properly fitting seater stems make contact on bullets' ogives nearer the tip of the bullet than where the rifling will engrave, or comparitors make contact.

That is absolutely correct.

 

[CatShooter]

OK, I am with Boyd on this.

I am referring to o the datum line that comparator's such as hornady use for each caliber.

When you use the standard comparator's such as Hornady, this is the area measured. I know of no seating die that uses that dimension. I have a Redding Competition die and it may seat on the ogive , but not on the datum line most commonly referred to as the "ogive" when one is talking about comparator's.

There is no such thing as a "Datum line" on bullet ogives - you just made that up

 

[broncman]

OK, since every one seems to be very 'particular' today, I will find the print that I was looking at that refers to the Ogive datum line.....

 

[lurcher]

for the Green rifles tool there are two options one with the 0.0001 indicator ($250) and one without ($150). Can you simply fit your own indicator to the one with out or does is work with a caliper (as shown at bottom of web page) http://greensrifles.com/New_Products.html

 

[fm1947]

datum is on the shoulder not the bullet
+1 on Boyd