433-415GC Huckleberry

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mtngun
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Re: 433-415GC Huckleberry

Postby mtngun » Wed Sep 11, 2013 6:40 pm

Let us know how your hi-vel loads shoot.

6pt-sika
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Re: 433-415GC Huckleberry

Postby 6pt-sika » Wed Sep 11, 2013 9:00 pm

My Sourdough I plowed another one about 19:00 tonight 9-11-13 with my wife's Ranger Arms LH 25-06 shooting the Nosler 100 grain BT in one of my handloads . That made my 9th so far this year .

I'm gonna hunt friday evening again and then more then likely saturday after dove hunting . I plan on trying to whop one with my first 400 grain mold that I kinda made like "405WCF"'s 433-400GC . Had that one about 4 or 5 years now and have yet to blood it !

If I can get that one done I'll go to the LBT 433-400GC and then the BRP/RD 432-400GC HP . Then perhaps next year I can try the two you sent me a month or so ago !

mt_sourdough
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Re: 433-415GC Huckleberry

Postby mt_sourdough » Sat May 17, 2014 6:50 pm

Here is a video I made about fitting 400gr bullets in 444 Marlin
https://www.youtube.com/watch?v=Pu11hUzP6bY&list=UUHtR7KLcS6uAymhQQbiNj2Q

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mtngun
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Re: 433-415GC Huckleberry

Postby mtngun » Sun May 18, 2014 8:30 pm

Good info.

Marlins often require a bit of tweaking for good feeding.

I'm surprised that the chamber would take that front band.

mt_sourdough
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Re: 433-415GC Huckleberry

Postby mt_sourdough » Sun May 18, 2014 9:04 pm

mtngun wrote:Good info.

Marlins often require a bit of tweaking for good feeding.

I'm surprised that the chamber would take that front band.


The case is the Hornady Leverevolution case. It is 0.150" shorter than standard 444 case length. That drive band is 0.20". I normally run a .050 front band length so I added the 0.15" difference in case length to the drive band to come up with 0.20 total. In the end it fits just like a 0.050" front band used in a normal length case. In fact, you can load this bullet in standard length base by crimping about 0.050 into the drive band. If loading into standard length case, the crimp groove becomes the top lube groove.

Here is the first test load target with the Razberry LE.
Image
It's only 50 yards, but it was off a wobbly folding table and shots were fired in rapid order without cooling while in the blazing direct sunlight. I', saying I am confident that I can shrink those groups quite a bit.

mt_sourdough
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Re: 433-415GC Huckleberry

Postby mt_sourdough » Sun May 18, 2014 9:12 pm

This pic illustrates how the Razberry LE works. The round on the left is the SuperPerformance 265fp (standard length case of course.) On the right is the Hornady Leverevolution round with it's shorter case length. The Razberry LE in the middle.
Image

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mtngun
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Re: 433-415GC Huckleberry

Postby mtngun » Mon May 19, 2014 1:04 pm

Thanks for the explanation. :)

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Re: 433-415GC Huckleberry

Postby 6pt-sika » Tue Jul 08, 2014 5:52 pm

Mt Sourdough , if you were so inclined I'd like to see pcs of your Rezzberry bullet unsuzed etc and then the same sized lubed and checked !

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Re: 433-415GC Huckleberry

Postby mt_sourdough » Fri Jul 11, 2014 7:55 pm

Image
In the center are my two new 400gr bullets. The Razberry is the 4th from the left. The Serviceberry is to it's right. The Serviceberry is designed to work in a 444 Marlin that has had two edges of the loading port rounded out to allow a 400gr bullet load with a SAAMI max COL of 2.555"
Here is a pic of my first test loads with Serviceberry using RL7.
Image
The top velocity was 1910fps with the 41gr load and about .645" for three shots at 50 yards.
Best group was .61" with 40.8gr and a velocity of 1889fps measured 15 feet from muzzle.
I am going to progress up to 41.8 in .2gr increments, The inside case length ends up being about 0.074" less with the Serviceberry and velocity with 41gr was about equal to velocity with 40gr and the Razberry seated at 2.491". I later learned that in my '07 SS, the Razberry needed to be seated to 2.485" to clear the unmodified loading gate. Both the Razberry and the Serviceberry have .375" meplats. Those huge meplats require about 0.010" shorter COL in an unmodified port and 400gr bullets.

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mtngun
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Re: 433-415GC Huckleberry

Postby mtngun » Fri Jul 11, 2014 9:29 pm

Thanks for sharing the target results. :geek:


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