45ACP is so much more conveniant? If I had unlimited budget I'd just go ahead right away but limited availability of 300 AAC/ whisper components (thus high prices) really holds me back right now. Tell me: what are the things I did not consider or messed up? Why should I buy a. 300 Whisper upper would be above 4.000$ over here (still a really small market). 308Win upper“ - assumed it can be solved technically - would be around 2.000€ (about 2.800 $) and a 300 AAC BLK resp. A full 9mm AR15 gun is 1.600€ (about 2.200$) A Heckler USC or a Beretta CX4 in. At shorter ranges it even matches the 220gr.ĩmm AR uppers and also dedicated lowers are pretty broadly available even over here (e.g. 300s have a 3 inch benefit in wind drift at 150 yards (al right, that’s a benefit but also nothing too significant) 300s drop only 3 inch less than the 9mm and 45 ACP. Please excuse the metric graphs: 100m is about 110 yards, 10cm = 4 inch Scope sighted in at 50m (about 45yards) ![]() Whisper B = Lapua „Scenar-L“ 220gr projectile with BC (G1) = 0,608 Whisper A = Lapua „Subsonic“ 200gr projectile with BC (G1) = 0,518 MagTech Hollow point with BC (G1) = 0,202 ē10m/s muzzle velocity (= about 1015fps) Assumptions I made for all three calibers: I made some calculations and I figured the benefit of a 300 AAC BLK/ Whisper over the two handgun calibers is by far not as big as I expected. 300s but is it really significant up to 150 yards? Of course the external ballistics are in favour of the streamlined. 45 and not just „slip through“ as most subtonic 300’s would probably do. Also there are plenty of proven projectiles which will expand reliably at subsonic speeds in 9mm and. In 45 ACP and 9mm of course there are tons of subsonic factory loads around and they’ll probably do the job at low cost. Thought 3: 300 AAC BLK/ 300 Whisper vs 45 ACP vs. The only projectiles I am aware of which were designed to expand and/ or fragement at subsonic velocities in 300 calibers areī) Lutz Möller „Gatterjagdgeschosse“ (Germany): ĭo these spezial subsonic projectiles reliably cycle/ reload in the Mag? That’s not what I’ve heard/ seen. Thought 2: Hardly any bullets which reliably expand below 1000fps in 300 caliber!? 308Win AR10 system with subsonics? Where would have to place the gas block? What gas port diameter should I choose? Should I mess around with the buffer spring or better not? Does it make sense to go with a piston system à la HK MR762 or Sig 716 or is DI the way to go? What else would I have to do and take care of? Is it worth approaching this or will it be a never ending story? 300AACs or 300 Whispers are still very uncommon over here and it is hard/ expensive to get brass let alone factory loads.Īnyhow there are some issues I would see coming there: how to cycle a. 308 brass are all over the place at low price and you can also get factory loaded. 308Win subsonic upper with 8“ barrel twist, 12" barrel length and load 220gr bullets I have pretty much the same as if I got a 300AAC upper for my MR556 (just a heavier weapon system of course).īenefit would be. Anyhow this can easily be overcome with either trailboss loads or a spezial subsonic brass as offered by guys like Samereier ( ) over here in Europe (I learned there is somebody offering a similar brass over in the States but I heard about quality issues on those – correct me if I’m wrong) If I build an dedicated. The 308Win in general has some issues with large brass volume if loaded subsonic. 300AAC in front of myself These were my thoughts: My hope ist hat you guys can give me some strong arguments to justify the. I’d love to get an upper in 300AAC Blk for my MR223 (your guys MR556) but looking in the details of the AAC BLK I am not that amazed about its capablities anymore. Of course my first stop was the 300AAC Blk resp. While looking into a gun which is both semiautomatic and subsonic (and only subsonic) for varminting up to about 150 yards I was of course looking into various calibers. I’m mainly into Hunting but also Sport shooting and last but not least always having in backmind self defense. I’m mainly running European products as Heckler & Koch’s, Walther’s, Anschütz’ Sig’s but also some stuff from the states as Ruger and Marlins. ![]() Since this is my first post let me briefly introduce myself: I’m a European guy frequently reading on SilencerTalk and really enjoying this forum here.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |