.300 BLK vs .223

[Gsxr600kg]

So ultamatly since all the ban stuff is happeing there has been a mad rush on lowers. I have been wanting to make a 308 however the lowers are back ordered for almost a year. So what does everyone think about the .300 BLK or can anyone recomend a good ranged round with a long flat trajectory and maybe just an all around good round that fits in a 5.56 lower, or is the 5.56 round the best.

Thank you!

 

[ckcollins2003]

The .308 nor the .300 BLK are flat shooting rounds.

For up to 600 meters and possibly a bit longer, the 5.56 will serve you well as long as you know what you're doing. While Travis Haley has shot a .300 BLK out to 750 meters, it doesn't mean everyone is cut out for that kind of shot with that round.

 

[chuddly]

the 300 blackout has VERY similar drop rates to the 7.62x39. If you want a general rule of drop follow that. The 300 blackout does drop slightly more than the AK round but for what we are talking about its a good "close enough" comparison.

 

[gunselman]

6.5 Grendel would be my choice for a long range 5.56 based lower rifle.

 

[chuddly]

maybe you need to study the 300 blackout a bit more....also a standard AR (5.56 sized) lower

 

[Gsxr600kg]

Thanks for the advice.. I know the 300blk is ultimately 7.62x35 I will prob just use the x39 charts for learning the round until I can draw out my own. I think I may have to go a head and set that upper since I don't have to get new magazines (damn ban) so it mite just be a good investment

 

[jblomenberg16]

I'm a blackout fan myself. Here's a good thread with lots of debate about the pros and cons.

https://www.indianagunowners.com/forums/long_guns/171036-ar_15_in_300blk_300_blackout.html

 

[csmith]

Have you considered a wssm round? DTECH out of norther Minnesota is the place I would look. He not cheap or real fast but he does build a real nice accurate rifle.

 

[BroodXI]

i just need to order a flash suppressor for my 300blk build and i'll finally be done. i can't wait to break it in. i ended up ordering my barrel from sotaarms.com for $150 shipped couldn't pass it up for that price. received the barrel in about a week. i ended up building the 5.56 and 300blk at the same time using the same lower, and love the fact that it's pretty much just a barrel change.