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  1. J

    6.8 spc

    Just trying to learn something. What is the difference between the 6.8 SPC and the 6.8 SPC 2 chamber. I couldn't,t find anything on the 6.8 SPC 2. Is it like an Ackley? Thanks J E CUSTOM
  2. J

    Has anyone not gained accuracy switching to a high end barrel?

    I,m with you. I use my chronograph during load development to eliminate bad loads and If the first couple of shots have poor SDs I stop and go to the next load. later I un-load them and move on. When I find a realy good load I load up that load using the same bullet lot, powder lot and I am...
  3. J

    Gunsmithing bad chamber job

    I know some will say don't worry about it. But as a Smith and one that Is anal about chambers It needs to be fixed even if to satisfy the customer There are several things I will comment on and probably cause a storm but hear goes. If A chamber is done right, It needs NO POLISHING. A polished...
  4. J

    Shooting the 50 BMG

    Sorry . I didn,t see your post sooner. Yes , It is very effective on lesser calibers . We tested the Assassin on 223s, 6.8s, 308s, 300 RUMs, 338s and the 450 bushmaster. The smaller calibers were slightly more effective than the larger calibers. How ever, when I tuned some of the brakes For...
  5. J

    6.8 spc

    When I did the research I used all the factory ammo ballistics for both the 6.5 and the 6.8 the best load available for the 6.5 was the Hornady I had listed and the best load for the 6.8 was the Remington factory. By using the factory loads it compares apples to apples. I realize that reloads...
  6. J

    Gunsmithing Metric Threads

    Most lead screws are standard thread pitch if you don't have a metric Lathe. To cut metric threads you have to start and stop the spindle without disengaging the Half nut. With the standard lathe you can cut most metric thread pitches as long as you don't disengage the half nut. J E CUSTOM
  7. J

    6.8 spc

    Thanks . I thought I had screwed up on the numbers. The Grendel was my second choice and with it being proprietary, brass and accessories would be harder to get. All though now all components are hard to find. Thanks again. J E CUSTOM
  8. J

    6.8 spc

    Not trying to be argumentative just trying to understand why the Grendel out out performs the 6.8 SPC . When deciding on what caliber I wanted the Grendel was one of my choices. After looking up all the load data and factory ammo ballistics this is what I came up with. The best load I could...
  9. J

    6.8 spc

    After having to shoot many Hogs multiple times with a 5.56 And tried every type of bullet with no clear improvements, I decided to look into something more powerful. I tried to gather as much information as possible and came up with what I think Is a good combination. For night hunting hogs...
  10. J

    Has anyone not gained accuracy switching to a high end barrel?

    The barrel is the heart of any accurate rifle. You can do everything to the action, chamber,stock, bedding,sights and loads and if you have a poor barrel it may shoot Ok but it will never be a one hole rifle. The same goes for a good barrel, if all of these things are not done it will never...
  11. J

    Gunsmithing Barrel life all cal

    Actually, the buttoned barrels are tougher because in the buttoning process .003 to .006 thousandths of the barrel bore is forged from moving the barrel material around and aligned to the direction of the twist. (Not more accurate, just tougher) I find The buttoned barrels have better throat...
  12. J

    Gunsmithing Barrel life all cal

    It can only help in my opinion. Years ago I read that the US military had found that if they kept there service weapon loads below 3000 ft/sec it drastically improved barrel life. It appears to be a sound philosophy because rifles that shoot well below 3000 ft/sec seem to last a lifetime with...
  13. J

    Gunsmithing Barrel life all cal

    This is a tough one because barrel life depends on more than just the cartridge. Velocity, powder used, bullet type, load density, primer used, temperature of the barrel, and cleanliness of the barrel all contribute to barrel life. Example: two rifles of the same calibers and make, One is...
  14. J

    6.8 spc

    Thanks for the load data. I have all of the components that were mentioned and will try each one. With a good barrel, there is no reason this rifle cant shoot better than 3/4 to 1'' groups. (Except maybe Me on a bad day). Thanks again. If anyone else has a different load. sing out. J E CUSTOM
  15. J

    6.8 spc

    Does anyone have a pet load for there 6.8 SPC ? I intend to use the 115 grain bullet unless there is something better. My current load gets 2780 ft/sec with the 115 Match Kings for just under 2000 ft/lbs of muzzle energy and I was wondering if any one had something that shoots better...
  16. J

    Shooting the 50 BMG

    Thanks Carlbobh. Port volume was one of my concerns when designing the brake that would improve or eliminate all or the bad effects of a brake and improve shooter comfort. In the case of the M82 with its recoil action had I gone with more "Large" ports it may have reduced recoil to much and...
  17. J

    Shooting the 50 BMG

    The M82 AI is easy to change brakes on, simply remove the two bolts and washers and un-screw the factory brake. To install the Assassin brake place the Belleville washer (Crush washer)on the threads, screw the Assassin on and time it with the washer, and set the set screws to keep it timed...
  18. J

    Shooting the 50 BMG

    Good question. First, The test were to test for recoil,muzzle flash, muzzle rise,DB levels and pressure wave. We did lots of test shooting the rifles but they only show the perception, and we wanted to keep the test Apples to Apples. We tested lots of brakes and some were very identifiable...
  19. J

    Gunsmithing Muzzle Brake Concentricity

    Normally after the bore center line is established and the threads are cut for the brake with the shoulder to seat the brake, the OD of the barrel is only a few thousandths off (.002 to .007) you cant see it and you would have to re-contour the whole barrel to make it true and look right. If a...
  20. J

    Good Caliber To Start With?

    Nothing wrong with the 270, But bullet selection in factory ammo is poor. If the action is currently in 270 the first thing to think about is what will fit the action without any alterations. calibers that will fit this action would be the 25/06, 270, 280 and 30/06 and factory ammo is...
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