It seems like I could get the same suppression performance out of a 300gr bullet in one of these as I'm getting with a 200gr. They both provide a 90% case fill to aid in tight SDs without having to use some novelty powder like Tinstar or Trail Boss. 338 Razorback is the natural evolution using 10mm Auto brass which can be found anywhere. 338 Spectre uses 10mm Magnum brass which is unavailable right now but formed brass is available for $40 a hundred. A person can buy dies for both right now. They use large pistol primers which is a welcome change. Both are done with one pass thru a sizing die. Pretty close to 300BO but pushing the same 338 bullets as the 8.6.Īpparently the difference between these two cartridges is which pistol case is used to form brass.
Maker has 300gr REX solids for subsonic expansion. But these tiny little 338 cartridges seem like the way to shoot subsonic 338. Double to 3 times as much as I'm shooting now. Twist rate is too fast for supers, has too much case capacity subs, not enough for supers. I'm pretty convinced the smallest powder charge in a longer barrel is going to be the quietest configuration.Ĩ.6 Blackout seems like a hot mess. It's the quietest centerfire subsonic gun I have. The 338 Spectre is a wildcat cartridge, with no SAAMI published specs, and at the time of this writing, nothing has been published on C.I.P’s website. I currently shoot 5.7gr of Hornady Longshot in a 190gr 300BO out of a 16" barrel with a TB 338 Ultra. Based on a 10mm Magnum Case (Not 10mm Auto) necked down to accept 338 caliber bullets, this is a potent and versatile cartridge for any AR or Bolt gun. I'm thinking a 10" - 16" barrel on my SBR'd Origin l. I only care about subsonic (if you want to talk supers GTFO). The plastic tips on some bullets also add length without weight.Anyone play with these? I'm 98% about to buy a 1:6.5". And length has a lot of influence on twist required. The reason for this is that copper and yellow-metal bullets are less dense than lead-core bullets and so with bullets of an equal weight the monolithic bullets are longer. With some monolithic and plastic-tipped bullets the above twists may be too slow.
This chart is based on jacketed lead-core bullets. For more information about choosing the correct twist rate Click Here. You may contact Carson with questions by e-mail CLICK HERE.īULLET WEIGHT / CALIBER / TWIST RATE CHART We are also very willing to help you determine the correct twist. The rate should be based on the heaviest bullet you intend to use. Caliberįor help in selecting the correct twist rate for the bullet you plan to use please refer to the chart below. Maximum finish length is 44″ unless indicated otherwise.
Only the following caliber/twist combinations can be ordered over 30″ in length. Most caliber/twist combinations can be ordered in a finish length up to 30″ at an additional charge. Our standard length barrels are furnished as a 28″ long blank that will finish up to 27″. Some twists are available in more than one groove configuration as indicated. Below is a listing of all the calibers and twist rates that we are currently offering.
0 kommentar(er)
