I'm sure that if I went to the trouble of doing a larger sample size comparison I'd have hard data.but wtf, it's not like we're using 300BLK for 1,000m precision shots where the difference could actually have an impact. 002 and could easily have been user error), loaded 10 rounds each with COL of 2.036 & 2.038, benchrest fired the two groups for accuracy and velocity COL 2.038 to be both slightly more accurate as well as slightly more consistently stable velocity as well when I say "slightly" I mean significantly less than a single standard deviation, so while it's pretty much a meaningless difference between the two and I definitely tend to nerd out over the data (clearly), I just went with my gut and followed where the data seemed to be heading. To determine my target seating depth I measured the powder height of 20 filled cases, took the average height of the powder level (which only varied by. The subsonic 300BLK load I've had success with using Sub-X bullets is 12g CFEBLK, 190g Hornady Sub-X, COL 2.038, seated so the bullet is sitting gently on the powder without compressing it (approximately). Odds are better than average that it won't happen that way.Ĭlick to expand.Sorry for the delayed response. If you can figure out how to make quiet subsonic 180 grain or under ammo you will become famous because not many people have figured out how to do that (and it's not from a lack of trying).īasically put the idea of running the same bullet in each rifle to bed. Pretty much unless you are shooting a bolt action rifle your bullets all need to be 190 grains or more to get reliable subsonic ammo. I've tried several slow powders and it had the same result every time. It won't be hearing safe at the ear at all. Featuring the renowned Hornady V-MAX projectile, this ammunition combines proven materials, innovative design, and a streamlined profile to achieve straight. Basically that powder and how it creates pressure is relatively slow, and with almost any slow powder, the bolt will open while everything is still under pressure and the port pop will be LOUD. You CAN use a powder like Reloader 7 to get subsonic loads for all types of light bullets but the characteristics of the powder make it really loud. Since you said you are kind of a newer reloader let me know if you understand what powder shift is. You will basically cut back to the point that you get powder shift problems or cycling issues. Even then 190's are harder to develop a load for because they are a bit more picky when it comes to using the right powder. There are a whole host of issues when you try to go lighter than 190. Given we are talking about jacketed bullets here. Must have an Illinois Firearms Owner Identification Card, no shipments to Chicago.In an AR it's a lot more complicated to try and get subsonic performance out of anything under 190 grains. No Ammunition, no magazines over 10 rounds, no Starter Pistols No ammunition, no magazines over 10 rounds Powders are selected for optimal performance and consistency from lot to lot. Long grooves in its gilding metal jacket combine with the bullet’s flat profile and the patented Flex Tip insert within its hollowpoint cavity to help it expand reliably at low velocities. Must have a Pistol Permit or Ammunition Eligibility Certificate on fileĬlick here to upload your CT Pistol Permit or Ammunition Eligibility Certificate The Sub-X bullet used in Subsonic Rifle features a lead core. IF you have an FFL03 we can ship ammunition to you once on file, but you must have an AVL issued by CA to transfer ammunition.Ĭlick here to view the FFL dealers we have on file and instructions for shipping to a CA FFL or AVL.Ĭlick here to upload your FFL or AVL information (LEO Credentials if applicable) Must be shipped to an FFL or Licensed Ammunition Vendor unless you are an exempt peace officer.
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