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New Baby
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
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GroovyJack
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PostPosted: Sat Nov 07, 2009 10:44 pm    Post subject: New Baby Reply with quote

Is on the left weighing in at 645 , on the right is the classic Lyman 462560 at 545



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Vince
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PostPosted: Sat Nov 07, 2009 11:48 pm    Post subject: Re: New Baby Reply with quote

Very nice GroovyJ...very clean castings too.

What odds Gelan will take one look at these and say..."I want a mould !" Laughing I can't say I blame him...they look lethal mate.

Cheers, Vince

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Pumpkinslinger
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PostPosted: Sat Nov 07, 2009 11:59 pm    Post subject: Re: New Baby Reply with quote

Holy cow! What are you firing that in?

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gelandangan
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PostPosted: Sun Nov 08, 2009 3:51 am    Post subject: Re: New Baby Reply with quote

Hell Yeah!!

I WANT THAT MOULD!!!

Thats a flat nose pellet too isnt it?
What if any ogive on it?
Did you ream open the throat of your chamber to fit that in?
How does it shoot?
Who made it?

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GroovyJack
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PostPosted: Sun Nov 08, 2009 7:30 am    Post subject: Re: New Baby Reply with quote

Pumpkinslinger wrote:
Holy cow! What are you firing that in?

458 Lott

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GroovyJack
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PostPosted: Sun Nov 08, 2009 7:33 am    Post subject: Re: New Baby Reply with quote

gelandangan wrote:
Hell Yeah!!

I WANT THAT MOULD!!!

Thats a flat nose pellet too isnt it? I spose it is ..
What if any ogive on it? HUH what ogive , the meplat is like .440 or soDid you ream open the throat of your chamber to fit that in? Nope
How does it shoot? Dont know just got it ..
Who made it? NEI 458-645GC Mould Number 351

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GroovyJack
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PostPosted: Sun Nov 08, 2009 1:41 pm    Post subject: Re: New Baby Reply with quote

heres the mould



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Pumpkinslinger
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PostPosted: Sun Nov 08, 2009 3:41 pm    Post subject: Re: New Baby Reply with quote

I can't wait to hear the shooting report on that one. What is the twist rate in your barrel and the length of the bullet?

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GroovyJack
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PostPosted: Sun Nov 08, 2009 4:36 pm    Post subject: Re: New Baby Reply with quote

CZ550 , tricked out a good bit , 14" twist , 21.5" barrel , bullet is a bit over 1.7" long

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gelandangan
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PostPosted: Sun Nov 08, 2009 4:41 pm    Post subject: Re: New Baby Reply with quote

14"twist should be ample for that HUGE Shocked pellet!!.

I imagine the lead pot would empty very fast while casting these babies Very Happy

Is that an aluminum mould?
the cavities looks HUGE!!

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GroovyJack
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PostPosted: Sun Nov 08, 2009 5:21 pm    Post subject: Re: New Baby Reply with quote

14 should be perfect I'm hoping ..

Pot does empty fast

Yes it is an aluminum mould

heres a better pic of the mould



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Pumpkinslinger
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PostPosted: Sun Nov 08, 2009 10:14 pm    Post subject: Re: New Baby Reply with quote

Gelan, I don't think that big boy would work in a .45-70...

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Pumpkinslinger
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PostPosted: Mon Nov 09, 2009 12:15 am    Post subject: Re: New Baby Reply with quote

According to the Greenhill formula a 1-in-18" twist should be fast enough for velocities under 2000 ft/sec. 1-in-22" for velocities over 2000 ft/sec. Another way to look at it is that a 1-in-14" twist should stabilize bullets up to 2.25" long.

My .45-70 Marlins have a 1-in-20" but the Pedersoli "Remington" rolling block has a 1-in-18" twist... Hmmmm!

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GroovyJack
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PostPosted: Mon Nov 09, 2009 1:30 am    Post subject: Re: New Baby Reply with quote

I have the Greenhill chart too , and without looking 14 will stabilize 864 grains in .457 bore , I believe .. My charts dont have one for velocity , only length and weight ..

Theres a formula which isnt to complicated to use if you dont have the chart ..

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gelandangan
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PostPosted: Mon Nov 09, 2009 5:25 am    Post subject: Re: New Baby Reply with quote

Pumpkinslinger wrote:
Gelan, I don't think that big boy would work in a .45-70...


Maybe! But you should not stop dreaming just because!

I have shot a few 600 gn of my H&R Buff classic,
not great result but should be doable for close distances.

BTW, a Buff Classics is 1:20 twist Very Happy
That alone should stop me from trying something like groovies bullet.

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