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185 Juggernaut vs Hybrid loading

Got caught without enough 185 Hybrids to load for a match, but have a small stockpile of Juggernauts. Thinking of using the Juggs with the same load the Hybrids use. Thoughts or does anyone have experience with this swap?

Thank you,
Jim
 
Did same thing and blew primer first shot. Need to work up. I started at the Berger max for jump testing. It was fine. Going to test further this weekend.

Looks like the hybrid takes more cartridge space causing more pressure.
 
So I should be OK going from Hybrids to Juggernauts?

I will double check my seating depths and compare the remaining case volume.
 
Base to ogive on Juggs is longer, 0.691" compared to 0.657" on the 185 Hybrids.

Seated the same, I'd back off maybe a grain (or more) depending on what propellant you're using, the temps you expect to be shooting them, and how your brass is putting up with the load you use.

Juggs' bearing surface @ 0.010" shorter than Hybrids isn't enough by itself to make up for the lower case volume.
 
spclark, thank you for the dims. That much?! Crap. Since load development isn't going to be able to take place tonight, I may just skip the match since I worry dropping an entire grain of Varget may leave me short at 1k.
 
Did same thing and blew primer first shot. Need to work up. I started at the Berger max for jump testing. It was fine. Going to test further this weekend.
in five shot
Looks like the hybrid takes more cartridge space causing more pressure.
So I should be OK going from Hybrids to Juggernauts?

I will double check my seating depths and compare the remaining case volume.
My apologies. Totally misread. Thinking you were going from Juggs to 200 Hybrids. I have no idea on 185 Hybrids.
 
No problem Luke. I have some load data around the bench some where for the Juggs, just can't seem to find it at the moment.
 
On the flip, I am wanting to try the Hybrids instead of the vlds. Could I use my vld load on the hybrids? I am loading for a 300wm with H1000.
 
Last edited:
On the flip, I am wanting to try the Hybrids instead of the vlds.

Can you elaborate on which VLD and which Hybrid? (There's a 185 of each of both but just a 210 VLD. Three different heavy Hybrids: 200, 215 & 230.)

What I'd look at first is bearing surface. This will have the greatest effect on relative pressure change, assuming both are seated to equivalent case volume... which hardly ever happens.

If we're looking just at the 185's, the Hybrid's BS of 0.346" is shorter by quite a bit over the VLD'S 0.407" so you're good there.

Base to Ogive - affecting seating depth - for those are 0.657" vs. 0.674" so you'd be gaining case volume if they're both seated the same.

Were I considering this I'd try the Hybrids with no other changes to see how they perform. You may find you can bump your charge up if need be; < BS + > case volume are good things to have in such a circumstance.
 
I went out and tested the 185 classic hunter hybrids this morning. They shoot great. No trouble on pressure signs. With the same load, the vlds are a touch faster.
 
So I should be OK going from Hybrids to Juggernauts?

I will double check my seating depths and compare the remaining case volume.
kohai133,
You're dealing with two different design bullets here( jug = long range BT). The only thing they have in common is their weight. if you know what your distance off the lands for the Hybrid is. Then I suggest you make a dummy to the lands with the Jug and find out what its CBTO (CARTRIDGE BASE TO OGIVE) has to be to get it to the same distance off the lands as the hybrid and test to see if the rifle likes the JUG seated there. If it does work the load back up to get you out to 1000 with accuracy. When you change bullets , even if they are the same weight, always back off the load a grain or two and work back up.
 
kohai133,
You're dealing with two different design bullets here( jug = long range BT). The only thing they have in common is their weight. if you know what your distance off the lands for the Hybrid is. Then I suggest you make a dummy to the lands with the Jug and find out what its CBTO (CARTRIDGE BASE TO OGIVE) has to be to get it to the same distance off the lands as the hybrid and test to see if the rifle likes the JUG seated there. If it does work the load back up to get you out to 1000 with accuracy. When you change bullets , even if they are the same weight, always back off the load a grain or two and work back up.


My 185 jugg load is 44.2 vgt and my 185 hyb load is 44.5vgt . Both loads are jumping 10-15
 
how come your hybrid charge is higher than the jugg?
I'm asking because according to the above posted info the bearing surface of the juggs is shorter.
 
I'm asking because according to the above posted info the bearing surface of the juggs is shorter.

There's no rule inherent in that information from Berger, it's intended to serve only as a comparison of the different products they offer: a good place to start but not a bible.

In S_a_V's world he's found - probably thru experience - what works for him in his equipment.
 

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