So, I try to be careful in anything I write to not dive straight into a highly technical conversation and assume everyone knows what we’re talking about. I don’t like feeling stupid, and I don’t want anyone else to feel that way either. One of my biggest pet-peeves in life is when someone makes someone else feel stupid. I want to be intentional to include new guys in on the conversation. Part of my goal for PRB is to help new shooters get involved in this sport that I’m obviously very passionate about.
Farthest shooting 308 subsonic series#
I honestly feel like this will be one of my landmark series of articles for 2020, and I’m so excited to share it with you guys! It will primarily revolve around the topic of bullet jump and seating depth, but will also extend into on a few other topics that are important for getting first round hits on targets at long range … but haven’t been explored much in terms of an objective, data-driven approach. This is the first article in a series related to reloading for precision rifle shooting, but much of what I plan to share could benefit shooters using factory ammo just as much as reloaders – if not more! Over the next few posts, I will be sharing brand new, primary research that I believe you guys will find very interesting. You can shoot up to 220gr as subs as long as you run the round nose bullets.With so many events canceled and stores closed, what a great time to do some reloading! Over the past several weeks, I have been working on a series of posts that I’m very excited to finally share with you guys! Unless you intend on only shooting specialty machined copper expanding petal type subsonic projectiles and believe the marketing around the rotational energy of such bullet killing game any better than a subsonic soft lead cast HP or a tumbling after impact long 240gr SMK then dont bother with anything over 1-8" twist.Ī 1-12" to 1-10" will actually shoot a wider range of subs and high velocitie bullets better than the 1-8" and 1-7".
The slower twist also combats bore leading. They are a short bullet with a blunt nose and base so dont require a fast twist barrel to stabilize them. The best twist for that cast 151gr HP at subsonic speeds is a 1-12" to 1-13". Lighter bullets in a fast twist don't nessisarally shoot slower than a slower twist will but do reach pressure faster which can in turn effect final achievable velocity. If you are using cast lead in a 1-7" you will also get a lot of bore leading which also destroys accuracy. 308 with the all the longest and heaviest bullets available such as the 240gr SMK.
308 were designed for use with the heaviest and longest jacketed bullets to run at subsonic speeds.ġ-8" gives the best subsonic accuracy in. I totally agree with Friwi, all the best accuracy I have achieved with both subsonics and high velocity was a twist rate of "just enough" and faster twists barrels groups have always opened up.įast twist barrels in.
Farthest shooting 308 subsonic crack#
The team down in the butts nic named it the bumblebee as the bullets whizzed over with a deep buzz at sub speeds rather than the sharp crack they were used to.
They were still perfectly stable and grouping well with round holes at 1000y. 338 Whispers ran 1-9" twist Shilen and trueflite barrels shooting 300gr SMKs and 300gr Berger hybrids at 1040fps MV. Ask Wingman what was the twist rate of his 338br and what projectiles he was shooting subsonic and how they where flying.My.
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