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375/408 Banded Solids Test

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  #85  
Unread 02-18-2010, 10:26 PM
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Join Date: Jan 2008
Posts: 436
Re: 375/408 Banded Solids Test

Kelly, the 375 test rifle was a standard 375 Chey. The 431 gr you speak of has long since been discarded in favor of a 422 gr with a different tail. With this class of bullet 2900 is attainable out of the standard case.

I hate to be the bearer of bad news but your quest for a magic twist rate to take advantage of the full range of bullets available is wishful thinking. The use of the tungsten core may help but that remains to be seen.

I once had a little spotted bitch that was a coon tracking machine, I never saw a dog that had as much talent as she did, her only problem was that she was really weak at the tree. My hunting buddy had a dog that was a treeing machine but he didnt track worth a flip. We decided we would raise a litter of pups out of them and they should be tracking, treeing machines. Well, when the pups came along they were the most worthless pieces of hound flesh ever I see. They would not track or tree a lick. Sooo, the moral of the story is.... Well, you figure it out.
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  •   #86  
    Unread 02-20-2010, 01:00 AM
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    Join Date: Dec 2009
    Posts: 214
    Re: 375/408 Banded Solids Test

    Quote:
    Originally Posted by Augustus View Post
    Kelly, the 375 test rifle was a standard 375 Chey. The 431 gr you speak of has long since been discarded in favor of a 422 gr with a different tail. With this class of bullet 2900 is attainable out of the standard case.

    I hate to be the bearer of bad news but your quest for a magic twist rate to take advantage of the full range of bullets available is wishful thinking. The use of the tungsten core may help but that remains to be seen.

    I once had a little spotted bitch that was a coon tracking machine, I never saw a dog that had as much talent as she did, her only problem was that she was really weak at the tree. My hunting buddy had a dog that was a treeing machine but he didnt track worth a flip. We decided we would raise a litter of pups out of them and they should be tracking, treeing machines. Well, when the pups came along they were the most worthless pieces of hound flesh ever I see. They would not track or tree a lick. Sooo, the moral of the story is.... Well, you figure it out.
    Augustus, great analogy...Thanks!
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      #87  
    Unread 02-20-2010, 07:10 PM
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    Join Date: Sep 2003
    Location: Nebraska
    Posts: 810
    Re: 375/408 Banded Solids Test

    I did some testing today with an array of bullets in my 375 snipetac with the Bartlien gain twist barrel. Initial sight in was set yesterday at 100yds. Then i moved to 535yds and re sighted.

    Here are a few results

    Retumbo powder, vel. 3130fps
    350 smk bullet at 535yds
    Group size 4" average didnt test at long distance
    ------------------------------------------------------------------------

    Predator 350gn banded solid
    Retumbo powder, vel 3158fps
    535yds
    Numerous groups from 1.350" to 2"

    1125yds
    Same load
    20.5 moa added from 100yd zero
    3.5" to 5" groups
    10mph cross wind, variable speeds
    No vertical stringing
    seated to touch lands
    --------------------------------------------------------------------------

    GS Custom 355gn banded solids vel 3140
    535yds
    5-7" groups
    1125yds
    13" group
    Only tried one powder and one load.
    --------------------------------------------------------------------------

    370gn Rocky Mountain bullet vel 3050fps *jacketed bullet*
    535 yds
    5-8" groups

    1125yds
    Missed target, only tried one load, more testing to come.
    -------------------------------------------------------------------------

    So far the Predator bullets are giving the best results in this barrel and twist rate.


    Here are a few photos i took while out checking the target.



    This is my mini sno kat, its the only way out to the target.



    Looking back to my shop and shooting bench, 1125 yards at the red line.



    One of the Predator bullet test targets, 1125yds 3.5" spread
    Bullets seated into the lands. Note the cardboard is in front of steel plate, bullet fragments ripped the paper.



    Last Predator bullet test on steel plate, 1125yds. 5" spread
    Changed the seating depth .010 off the lands

    Initial testing shows this bullet likes to be jamned into the riflings.

    Dave
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    "Let the good times roll"
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      #88  
    Unread 02-21-2010, 12:21 AM
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    Re: 375/408 Banded Solids Test

    Dave,

    Thanks for posting your results. It seems you had quite a nice day in the snow.

    Cheers,

    Master Diver
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      #89  
    Unread 02-21-2010, 07:48 PM
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    Join Date: Sep 2003
    Location: Nebraska
    Posts: 810
    Re: 375/408 Banded Solids Test

    After the nice day yesterday for shooting today brought a different story. The wind was up and cloudy with intermitent snow showers. I set up the vid camera to see if i could capture bullet strikes on the 535yd steel plate. I should of done this yesterday. I only fired three shots as the wind and cold made it not fun. The first vid Part 1, shows the last two shots, part 2 is the ride out to the target to see the bullet strikes. You can see the bullet trace after each shot, then the slap of steel. The steel is catapiller track sections welded together, it is very heavy and the bullet makes a very loud POP when it hits.

    YouTube - Shooting 375cal Snipetac rifle/part 1

    YouTube - 375 snipetac shooting, part 2

    I am shooting my 375 Snipetac rifle, bullets are the brass 350gn Predators.
    __________________
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      #90  
    Unread 02-22-2010, 12:35 AM
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    Join Date: Nov 2008
    Posts: 1,087
    Re: 375/408 Banded Solids Test

    Are these .375 cal Predator bullets the same as the .338 calibre ones? ie the front section is smaller and rides the lands?

    I had trouble loading them in my .338 Edge as if you load them too deep they fall into the case as the bands are a different diameter.
    They seem to shoot OK though.
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      #91  
    Unread 02-22-2010, 04:10 AM
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    Join Date: Nov 2008
    Posts: 64
    Re: 375/408 Banded Solids Test

    GREAT shooting under these harch conditions
    Seems Predator bullets got it right with this design.

    Cheers,

    Master Diver
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