300 Blackout bende

[Wild coast]

Guys please stop what you are doing, remove any headwear, bow your heads and let’s have a moments silence: this thread really is dead!

[Stevin]

Fuck I missed it, discovered too late Barnes Vortx 110 grain at Bellum Arcus. Did anybody manage to snag some?

I have a box of 110gr Tac TX if you're looking

[Strummer]

anyone try the Hornady 190gr subX ammo or the bullets for reloading
im waiting for my Card for a !6.5 inch howa bolt action
want to start getting my reloading gear ready

[Antlion]

How compatible are the standard lowers found on most local ARs with a 300 upper. So let's take a Norinco CQA as an example. Will a 9" 300 upper shooting supersonics require a change in buffer weight?

[Paul]

How compatible are the standard lowers found on most local ARs with a 300 upper. So let's take a Norinco CQA as an example. Will a 9" 300 upper shooting supersonics require a change in buffer weight?

It depends on your muzzle device, and lots of other factors.

The lowers should all be physically compatible.

[Stevin]

How compatible are the standard lowers found on most local ARs with a 300 upper. So let's take a Norinco CQA as an example. Will a 9" 300 upper shooting supersonics require a change in buffer weight?

Depending on how the barrel is gassed it might require a buffer change, but my experience is that generally you would not need to swap it, but want too swap it.
If I were going to use a 300blk upper on a shared lower I would use an adjustable gas block tuned to function on the lower.

In my instance (forgetting I have a complete firearm). I use an adjustable gas block that is tuned to run my Subs unsupressed using a Vltor A5H0 buffer.

A standard Carbine buffered lower could be used and the upper tuned in exactly the same manner.

If you don't want to use an adjustable gas block. I found the 300blk does shoot nicer with a heavier buffer and that most 5.56 rifles will still function just fine with an H1 or H2 buffer.

[Antlion]

Thanks . That answers that. Just seeing what uppers are available. Need to start making enquiries, I know the Radical uppers were available at one point.

[BBT]

Thanks . That answers that. Just seeing what uppers are available. Need to start making enquiries, I know the Radical uppers were available at one point.

Saw a Daniel Defense upper advertised today on one of the telegram groups for 21k

[Speed_Freak]

I am going to test some 188gr Peregrine Sub Sonic loads pretty soon, the dummy round feeds, does not hang up on the mag and feedramp and extracts fine too!
It's pre-scored to expand as low as 500fps
12.1gr of Hodgdons CFE BLK Powder

Pic is next to a 143gr PMP Bullet

[oafpatroll]

This Blackout thing is starting to look more and more interesting for me. I don't have an AR which feels wrong and I make cast and powdercoated bullets which these things seem to like.