6 vs 7 Ogive

[ETG]

What is the difference between a 6 and a 7 ogive. When I origionally ordered my dies a 7 was suggested for a 55-65 grain 224. Last time I talked to him he said he had a 6 and only had to make the punch for it. Said it would be fine for what I wanted. Also said if I wanted a 7 he couldn't give me any estimate when he would have any ready. I said go ahead and do the 6 - did I make a mistake? I will be using rimfire jackets.

[phil218b]

6 is a little less taper than 7 for rimfire jackets it will put less stress on the jacket when point forming. I don't think any ballistic difference would be noticable. The dies I use for rimfire jackets is a 6 ogive, I have a 7 that I use with commercial jackets for match bullets, I don't think I can hold my rifle still enough to make a difference while bench shooting let alone freehand.
I sent a pm and will send you some info. I need your email to attach it.

[shooterg]

I can't resist - the difference is 1 ogive !

FWIW- my Blackmon dies are 7 ogive and I'm plenty happy with the 50 to 56 gr. bullets I've made and shot in an AR15.

[ETG]

I can't resist - the difference is 1 ogive !

FWIW- my Blackmon dies are 7 ogive and I'm plenty happy with the 50 to 56 gr. bullets I've made and shot in an AR15.

Har har har - Thanks - now I get it. So I could use a 3 and a 4 ogive and have a 7 ogive. Makes perfect sense.

What are the min and max bullet weights your 7 can make. Mine is from Blackmon also. Anyone know the weight ranges for a 6 using rimfire jackets?

Thanks phil218b - that info helped a bunch.

[MIBULLETS]

I have a 6 as well from Corbin. I can make anything from a 45 gr up to about a 68 gr lead tip on them. You could probably make a 58 - 60 gr bullet without the lead coming out of the tip. You can't fit as much lead in the 7 because the jacket will be tapered more. The 1 ogive difference will not make a hoot of difference. Benchrest guys always want something in the 7 - 8 ogive. I suppose to resist the wind and air drag a little more, but you probably wouldn't see a difference out to 300 yds.

[shooterg]

If I go to 60 gr. with long rifle rimfire jackets it starts to look like a wadcutter in my 7 ogive . I've made a bunch of 51's to 56's but I believe I could make a really light bullet with .22 short jackets - don't have any and don't have anything to shoot 'em in so haven't tried.

[ETG]

The sample bullet that came with the dies was 55 gr. Looks like the lead is just below the opening so I don't think I could get much heavier - would like to have been able to make 62s.

[shooterg]

Go ahead and try some 60-62. They do look kinda like a wadcutter but they shoot fine and the groundhog won't know he was killed with an ugly bullet !

[ETG]

I'll give it a try - Thanks