help needed to build a 300 whisper

[spdjnky_42]

Hello all, new to the forum. I have been an avid gun collector since I was a kid. I have many in my collection. A friend of mine recently showed me one of these and I am now looking for one to call my own. I have always takin apart and cleaned my own guns. However, I have never built one. I have the general knowledge of the parts but have no idea what works with what. I would like to build one of these and am open to your help. I have only a few things on my part. It can be either a bolt gun or AR based but I would like to know the cost difference before we start. It will have to have at least a 16" barrel (local laws). I am building it for the subsonic loads although some supersonic rounds would be nice. I would assume that a 1:8 twist would be right from what I have read on here. A suppressor would not be out of the question but I am still looking into it. From what I have found I would need the federal stamp and also at least a C&R permit (also quick question: If you pay for the stamp is it per weapon, or does it cover all your weapons? or do you have to pay per violation on the weapon?TIA) SO what are my options for a good quality on a budget. Also what kind of funds are we looking at here. Just out of curiosity what does it cost to build a .500 whisper. Sorry for the long post and thanks.:smile:

[Rancid Coolaid]

Bolt gun is rock solid no need to worry about cycling issues or feed/extract/eject issues. It is also quieter, due to far fewer moving parts at trigger pull.

That said, ARs are fun as hell, can fire much faster than a bolt gun, and are much more configurable than a bolt gun.

If the barrel is to be 16", you do not need any special stamp for the gun. If you plan to buy a suppressor, you will need an ATFE stamp for the can. It can be moved from gun to gun, but always keep a copy of the ATFE paperwork - with stamp - on you when you have the can.

I started in the 300 game with a bolt gun, decided to go AR, now I wish I hadn't sold the bolt gun. ARs are fun and very user-configurable, but they can be a pain to get set up and running smoothly, depending on the ammo and the shooter's knowledge and commitment to the platform.

I'm not sure I would recommend building an AR for your first foray into 300. Buy a bolt gun or a set up AR and see if it is really what you want. Once you know what you want to do with it, get what you want.

300s are fun, and infinitely more so when suppressed.

[spdjnky_42]

Thanks for the info. I spent the day reading about how to build AR's. I think I will do just that. As for the 300 what bolt gun can I get cheap and where do I get the barrel. TIA

Also if you care to comment here is my AR 15 build: Del Ton complete AR m4 carbine (minus stripped lower) with the acc I want for around $700 what do you guys think and where can I get a good stripped lower or should I cough up $180 for theirs? Also I live in MO if that makes a difference.

[spdjnky_42]

Also maybe I jumped the gun would I be better off (cheaper) getting a 300/221 AR 15 complete upper $850 and just using the lower from the other AR 15 I am building?

[ds762]

SBR's are legal in MO .. so are suppressors .. NO need for the C&R FFL anymore - they changed that this year.

I would recommend you look up the member "spook" or "tp555" .. both are competent smiths and could steer you in the right direction for a trouble free set up. OR .. you could just plop down the $$$ for an AAC 300 BLACKOUT upper and be one of the "kool kids on the block"! :rolleyes:

[spdjnky_42]

I can buy supressors from a dealer legally now? :nanabang: How much is the blackout? I doubt I will plop out $ after the $900 M4A3. I am just looking to use a nice cheap (good quality) bolt gun for the 300/221 barrel. For a subsonic toy.:twoguns:

[spdjnky_42]

Couple questions. "SBR" does this stand for short barrel rifle? If so does that mean MO changed the law on the 16" barrel length?

Also any one have a DS arms 300 AAC? $300 seems pretty good compared to the $700 one I saw.

[Rancid Coolaid]

SBR is short barrel rifle.

You get what you pay for, I personally would avoid the $300 option.


A 300 is a relatively complex setup (to get it right), cheap up front might be expensive in the end.

[spdjnky_42]

Well then I guess Ill be saving for the $700 version. Any manufacturer you guys recommend?

[Hoser]

Contact Spook for a custom build. This way you know it will run from the get go.

[Titleiiredneck]

Contact Spook for a custom build. This way you know it will run from the get go.
Yep I concur, he is the best.

[LouBoyd]

You need to make some choices giving some though about what you want from a "300 Whsper"

Bolt action (rem 700 or model 7) or AR-15? The obvious advantages of the AR15 are availability and rate of fire.
For low noise and ease of tuning ammo the bolt action has the advantage.

Suppressed or not? US Laws generally require use of a class 3 FFL dealer. $500-1500 for the suppressor depending on model, $200 tax, 6 month + wait.

Minimum barrel rifle (16") , NFA SBR, or pistol? ATF SBR registration is another $200 tax and wait plus cost of the short barrel).

Subsonic, supersonic, or both? A bolt action will handle all. . In an AR-15 it's difficult to get good performance with both. Solutions are an adjustable gas block or just have two uppers. The latter gives best performance.

Do you care about noise?

Only a subsonic bullet has low bullet noise ( 30+ decibels less than supersonic)
Only a suppressed rifle has low muzzle blast (30+ decibels less than with supersonic molecular propellant muzzle velocity)
Though 30 decibels is a reduction in noise energy of a factor of 1000, the range of human hearing from detection to pain is about 100 decibels. You'll still be able to hear a suppressed subsonic firearm at a considerable distance. A suppressed subsonic rifle usually does not require hearing protection.

Only a bolt action has low mechanical noise and no breach blast. That noise will be dominant with most suppressed subsonic semi-automatics. With a good suppressed bolt action you hear muzzle blast similar to an air rifle but the next loudest noise is from the bullet hitting the target.

If subsonic and quiet is the primary objective and cost is important there are other options. Long barrel rifles with large expansion ratios can also shoot bullets subsonic with low muzzle blast. the 300 Whisper/BLK is not a suitable cartridge. The advantage is no NFA involvement. But hat's a separate subject for another thread.

[sha-ul]

For What it's worth, if you want to go bolt action, Savage is now offering the 10 precision carbine in 300 blk/wtf
AAC is selling a Remington model 7 in it as well, both of these are threaded & suppressor ready.

[Titleiiredneck]

For What it's worth, if you want to go bolt action, Savage is now offering the 10 precision carbine in 300 blk/wtf
.

Not until febuary, and that will be the release date to the dist. where I am sure there will be a bunch of kool aid drinkers with orders already in.

I would say do a howa 1500 for a perfect setup with no extraction issues.

[ds762]

Couple questions. "SBR" does this stand for short barrel rifle? If so does that mean MO changed the law on the 16" barrel length?

Also any one have a DS arms 300 AAC? $300 seems pretty good compared to the $700 one I saw.

All NFA has always been legal in MO .. but until Aug. 28, 2011 it was only legal for people who held an FFL (03 C&R minimum). As of Aug. 28, 2011 the FFL requirement was removed so that non-licensed individuals could legally obtain NFA.

SBR is NFA speak for short-barrelled rifle.

I do not have personal experiance with the DSA uppers .. but I wouldn't rule them out.

[spdjnky_42]

Thanks for the info. I thought I read that savages were junk for the 300? Also I am looking for quiet but the 300 is about the right caliber I am looking for especially if I wont have an issue suppressing it. I do think the bolt is more what I want also. I am ordering a 5.56 carbine and already have a 30.06 for super sonic.

[lskok]

Group Buy for 300 Blackout barrels for Savage actions:

http://www.gunshack.com/groupbuy?product_id=164