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jcorry
.275 member

Reged: 09/03/08
Posts: 67
Loc: West Coast of Ireland & London

Woodleigh Hydro in Rigby
#391461 - 05/05/25 07:15 AM

Sorry if this has been covered, but I just wanted some advice.
This topic has been well discussed re Doubles (it seems prob a good idea to not shoot these through an old double)
My question is, would they be ok in a 1912 Rigby 350 bolt?
Thanks
John

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DarylS
.700 member

Reged: 10/08/05
Posts: 27602
Loc: Beautiful British Columbia, Ca...

Re: Woodleigh Hydro in Rigby [Re: jcorry]
#391470 - 05/05/25 01:08 PM

No reason I can see not to shoot them in a bolt gun, as long as it doesn't have either an undersize bore and groove, or oversize either.
Oversize isn't as bad as undersize.
Have you measured the bore and groove dia.?

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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jcorry
.275 member

Reged: 09/03/08
Posts: 67
Loc: West Coast of Ireland & London

Re: Woodleigh Hydro in Rigby [Re: DarylS]
#391472 - 05/05/25 04:59 PM

Thanks. I haven’t measured it but have been shooting .358 Nosler partitions with no issues.

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DarylS
.700 member

Reged: 10/08/05
Posts: 27602
Loc: Beautiful British Columbia, Ca...

Re: Woodleigh Hydro in Rigby [Re: jcorry]
#391473 - 06/05/25 01:05 AM

I would still measure it just to make sure.
What critter do you need the hydro's for?

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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jcorry
.275 member

Reged: 09/03/08
Posts: 67
Loc: West Coast of Ireland & London

Re: Woodleigh Hydro in Rigby [Re: DarylS]
#391474 - 06/05/25 01:12 AM

Ok will do.
I don’t think it’s a topic worth discussing on the forum, but I have often used my 350 for buffalo and have had great success with premium bullets. I remember using hydros in an old Rigby of mine and was very impressed with how they performed on the cats and buff.

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Rule303
.450 member

Reged: 05/07/09
Posts: 5221
Loc: Woodford Qld

Re: Woodleigh Hydro in Rigby [Re: jcorry]
#391478 - 06/05/25 06:42 AM

No trouble using the Hydros in a bolt gun. You can contact Geoff at Woodleigh and check on use in doubles. Just google Woodleigh to get his email. The hydro causes less pressure than standard solids. They are a bore rider. That is the shank is the diameter of the bore and raised bands are what engage the rifling, not the who shank.

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jcorry
.275 member

Reged: 09/03/08
Posts: 67
Loc: West Coast of Ireland & London

Re: Woodleigh Hydro in Rigby [Re: Rule303]
#391479 - 06/05/25 06:53 AM

Thanks. Understood - as the hydro is made of brass? will it not wear more on the rifling than the standard copper jacket soft/solid?

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Rule303
.450 member

Reged: 05/07/09
Posts: 5221
Loc: Woodford Qld

Re: Woodleigh Hydro in Rigby [Re: jcorry]
#391484 - 06/05/25 10:41 AM

Quote:

Thanks. Understood - as the hydro is made of brass? will it not wear more on the rifling than the standard copper jacket soft/solid?

Hydro's are a copper alloy. My rifles show no more fouling than with standard cup and core bullets.

With the monomental bullets different makers use different grades or alloy's in the copper and same with those made of brass, so I am told. It would be safer using the Hydros than Barnes as the Barnes are not bore riders. Yet plenty of people use Barnes or similar in old sporting rifles.

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jcorry
.275 member

Reged: 09/03/08
Posts: 67
Loc: West Coast of Ireland & London

Re: Woodleigh Hydro in Rigby [Re: Rule303]
#391485 - 06/05/25 05:32 PM

Many thanks for that.

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DarylS
.700 member

Reged: 10/08/05
Posts: 27602
Loc: Beautiful British Columbia, Ca...

Re: Woodleigh Hydro in Rigby [Re: jcorry]
#391487 - 07/05/25 01:26 AM

The Hornady monos are made from guilding metal, same as bullet jackets. Harder than copper.
The Barnes have the bands, but the bands are groove dia. The shank is supposed to be under bore dia.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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Rule303
.450 member

Reged: 05/07/09
Posts: 5221
Loc: Woodford Qld

Re: Woodleigh Hydro in Rigby [Re: DarylS]
#391492 - 07/05/25 12:57 PM

Quote:

The Hornady monos are made from guilding metal, same as bullet jackets. Harder than copper.
The Barnes have the bands, but the bands are groove dia. The shank is supposed to be under bore dia.

Daryl I do not know about Barnes solids but the rest of their bullets are not bore riders. The shank is grove diameter with groves cut into the shank. The Hydros shank is grove diameter with, in effect, raised driving bands. If you look at a Barnes you will see the ogive turns into the shank, grove diameter with the groves machined into them.

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DarylS
.700 member

Reged: 10/08/05
Posts: 27602
Loc: Beautiful British Columbia, Ca...

Re: Woodleigh Hydro in Rigby [Re: Rule303]
#391495 - 08/05/25 12:57 AM

I thought that's what I said. I did not say the barnes were bore riders.
Another way, the major diameter is groove dia. The minor diameter is supposed go be smaller than the bore so that the tops of the lands are not engraved. This reduces pressure as above and behind the grooves as well as the tops of the grooves is the only part engraved. This, of course depends on the bore dia.
Above, I called the shank, the minor dia.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

Edited by DarylS (08/05/25 04:46 AM)

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DarylS
.700 member

Reged: 10/08/05
Posts: 27602
Loc: Beautiful British Columbia, Ca...

Re: Woodleigh Hydro in Rigby [Re: DarylS]
#391497 - 08/05/25 04:49 AM

I can easily see the advantage of a bore riding frontal section, with only a couple lands on the bullet being groove diameter. Dr. Mann, an American experimenter used this feature back between the 30's and 50's. I do not recall the exact dates. Due to the reduced drag, he was able to achieve higher vel. with similar bullet weights.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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NitroX
.700 member

Reged: 25/12/02
Posts: 40544
Loc: Barossa Valley, South Australi...

Re: Woodleigh Hydro in Rigby [Re: jcorry]
#391509 - 09/05/25 10:36 PM

Quote:

Sorry if this has been covered, but I just wanted some advice.
This topic has been well discussed re Doubles (it seems prob a good idea to not shoot these through an old double)
My question is, would they be ok in a 1912 Rigby 350 bolt?
Thanks
John

I thought the raised driving bands of a hydro were fine I doubles.

But monometals without raised bands considered not suitable.

But as suggested ask Geoff.

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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Rule303
.450 member

Reged: 05/07/09
Posts: 5221
Loc: Woodford Qld

Re: Woodleigh Hydro in Rigby [Re: DarylS]
#391526 - 10/05/25 12:59 PM

Quote:

I thought that's what I said. I did not say the barnes were bore riders.
Another way, the major diameter is groove dia. The minor diameter is supposed go be smaller than the bore so that the tops of the lands are not engraved. This reduces pressure as above and behind the grooves as well as the tops of the grooves is the only part engraved. This, of course depends on the bore dia.
Above, I called the shank, the minor dia.

Re Reding it, without the aide of rum I see my stuff up.

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DarylS
.700 member

Reged: 10/08/05
Posts: 27602
Loc: Beautiful British Columbia, Ca...

Re: Woodleigh Hydro in Rigby [Re: Rule303]
#391537 - 11/05/25 03:15 AM

My verbiage deciphering abilities are totally dependent upon my "suds" absorption.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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Rule303
.450 member

Reged: 05/07/09
Posts: 5221
Loc: Woodford Qld

Re: Woodleigh Hydro in Rigby [Re: DarylS]
#391540 - 11/05/25 08:50 AM

Quote:

My verbiage deciphering abilities are totally dependent upon my "suds" absorption.

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93x64mm
.416 member

Reged: 07/12/11
Posts: 4353
Loc: Nth QLD Australia

Re: Woodleigh Hydro in Rigby [Re: Rule303]
#391541 - 11/05/25 11:58 AM

Quote:

Quote:

I thought that's what I said. I did not say the barnes were bore riders.
Another way, the major diameter is groove dia. The minor diameter is supposed go be smaller than the bore so that the tops of the lands are not engraved. This reduces pressure as above and behind the grooves as well as the tops of the grooves is the only part engraved. This, of course depends on the bore dia.
Above, I called the shank, the minor dia.

Re Reding it, without the aide of rum I see my stuff up.

Rule303 - agree whole heartedly about the rum!
Cheers

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DarylS
.700 member

Reged: 10/08/05
Posts: 27602
Loc: Beautiful British Columbia, Ca...

Re: Woodleigh Hydro in Rigby [Re: 93x64mm]
#391548 - 12/05/25 01:47 AM

Pilsner for me, thanks.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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