![]() 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. I currently shoot 5.7gr of Hornady Longshot in a 190gr 300BO out of a 16" barrel with a TB 338 Ultra. 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). Refer to our Compatible Headspace Gauge Chart below or ask your sales representative if your gauge is cross-compatible.Anyone play with these? I'm 98% about to buy a 1:6.5". We list known compatible chambers with each headspace gauge product. 30-06 Springfield headspace gauges are usable in. FIELD gauges are slightly shorter than the SAAMI maximum in order to give a small safety margin.Ĭross-compatibility: Many of our headspace gauges are compatible with multiple chamber specifications. If chamber headspace is excessive, the gun should be taken out of service until it has been inspected and repaired by a competent gunsmith. If a rifle closes on a FIELD gauge, its chamber is dangerously close to, or longer than, SAAMI’s specified maximum chamber size. FIELD: Corresponds to the longest safe headspace.The NO-GO gauge is a valuable tool for checking a newly-reamed chamber in order to ensure a tight and accurate chamber. To determine if there is excessive headspace, the chamber should then be checked with a FIELD gauge. If a rifle closes on a NO-GO gauge, it may still be within SAAMI specifications or it may have excessive headspace. NO-GO: Corresponds to the maximum headspace Forster recommends for gunsmiths chambering new, bolt action rifles.Although the GO gauge is necessary for a gunsmith or armorer, it usually has fewer applications for the collector or surplus firearms purchaser. The GO gauge is essential for checking a newly-reamed chamber in order to ensure a tight, accurate and safe chamber that will accept SAAMI maximum ammo. If a rifle closes on a GO gauge, the chamber will accept ammunition that is made to SAAMI’s maximum specifications. GO: Corresponds to the minimum chamber dimensions.In order from the shortest to longest, they are: GO, NO-GO, and FIELD: Pacific Tool and Gauge offers three lengths of headspace gauges per rifle caliber. Remington Model 7 Receivers and Actions.Remington 700 Actions - Blueprinted & Custom.Custom Shop NOS Titanium Actions - Very Limited.Actions, Bolts, Bottom Metal, Fire Arms.High Speed Steel (HSS) Dovetail Cutter.4 Flute - Double End Ball Nose Carbide Mill Cutters.4 Flute - Single End Ball Nose Carbide Mill Cutters.4 Flute - Double End Square Carbide Mill Cutters.4 Flute - Single End Square Carbide Mill Cutters.2 Flute - Double End Ball Nose Carbide Mill Cutters.2 Flute - Single End Ball Nose Carbide Mill Cutters. ![]()
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