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Recent content by Black Diamond Rifles

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    375 viersco magnum 2

    I did a lot of testing with this chamber, found the velocity drops when using a barrel shorter than 35" Just too much powder to burn. I tried faster powder but the case is too large, that then brought up other issues, pressure spikes. It was designed to shoot heavy bullets, 414 GS custom for...
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    Texas man hits 1 MOA target at 2.07 miles

    Seems some of the numbers posted are way off. 1100fps is closer at 2400yds not 3600yds at 3000yds its 995fps and that is using 3100fps as a perameter. You would have to propel the bullet at 4500fps to get close to super sonic at 2 miles. I only say this, please post accurate numbers not...
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    375 SnipeTac hangfires

    I have experienced hang fires with ball powder in cold weather. I have never seen any using Retumbo or BMG50 powders. Check your flash holes and make sure the primer is seated firm to the bottom. Also make sure the primers are fresh. I had a customer complain once and he found that the...
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    Trouble getting my 408 CT to shoot under 1 MOA

    I hate to say what the problem prolly is..... One issue is that the dies are prolly cut for the old brass specs. Bertram brass has thinner necks and will not size properly if the die is not set for that type of brass. I had to change my tooling for the new brass. Another good technique is...
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    Trouble getting my 408 CT to shoot under 1 MOA

    Check the run out on your ammo.
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    now I'm getting frustrated

    You should of contacted me if your having problems. Jamming bullets into the lands don't normally work well with magnum chambers. The best test is to start loads with the bullet just kissing the lands and work backwards. You will find most rifles with High BC bullets like them set around .010...
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    Forming SniepTac cases without bullet, suggestions?

    You can do it the same way. I use 20 grains of a fast powder, shotgun or pistol type. The filler i use is Grits. Corn meal or Cream of wheat. Dave
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    Got my 375 Veirsco mag today!

    If the scope is rated BMG then you will be ok. I only had one issue with a rated scope early on with a 338 snipetac, a IOR. They replaced it with a new model and never had another issue. IOR told me the 338 magnums have the worst G force with a good muzzle brake. That is what causes most of...
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    Got my 375 Veirsco mag today!

    Just to clarify a few things. The bolt face on the action is .690 Case head is .675 Case body is .680 Just a slight rebate Case is 3.050 long Barrel tennon is 1.187 x16 tpi Barrel shank size 1.350 to 1.450 is perfect 375VM2 stands for 2nd design, 40 deg shoulder I have tested this round at...
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    .375 GSC 414 VS CEB 425 at 2050 yards

    Greg, I talked with Anthony yesterday about your testing of the 414. The BC difference your seeing might be due to your over spinning the bullet in your 7.5 twist. The bullet was not designed for that much spin, 8.5 to 9" twist. They shoot extremely well in my 375 Snipetac with a 31"...
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    577 tyrannosaur -- I am considering having one built

    My 375 and 416 VM rifles are based on a case that is very similar to the T Rex. I am currently working on a 458 version shooting 565gn GS Custom bullets. I am looking for velocity around 2850fps with this high BC bullet. The case holds around 175gns of powder. I have these cases custom made...
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    new ELR rifle from Viers co.

    Lets see if this works.
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    System Insight

    Re: System Insight The case design is being made from allmost scratch. I talked with Bertram several years ago looking for a new case larger than the 408 CT. He sugested his .585 African, similar to the Trex. I had him neck some down to 416 and hence came the 416 VM. The rifle performed...
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    System Insight

    Re: System Insight Here is the CAD print for the 375 VM case. I should have brass in about 45-60 days. Dave
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    System Insight

    Re: System Insight <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jimmy M40a2</div><div class="ubbcode-body">Man that is awesome. Sorry to keep asking question but it looks like a great package. What is the estimated supersonic range? I think I have run out of...
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