.338 Quiet A "quiet" rifle build. More pix

Re: A "quiet" rifle build.

Damn it Dave. Don't keep us waiting!
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Re: A "quiet" rifle build.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: patches</div><div class="ubbcode-body">Damn it Dave. Don't keep us waiting!
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Went out last week and shot with the can. We were going supersonic with loads that had been subsonic in Montana. After using the chrony,we were averaging 1135fps with 11.8 grains of bluedot here in Az. With the can on,we had a 4-6fps gain. The sonic crack was happening right at the muzzle/end of can and not down range.Still,with the can,the report was equal to that of a .22 magnum. I should have some stepped down loads by Friday and will run it again,hopefully with out the supersonic crack. Sure is fun to shoot. The sound of that 300 grain bullet hitting the paper target is almost as loud as the report itself. Once the crack is gone,it will be eery.Did the dope and its gonna take 56moa elevation to get out to 500 yards. I'll try to get some pix and video this weekend.
 
Re: A "quiet" rifle build.

Dropping the load from 11.8 grains to 11.6 grains made the bullet travel subsonically at this altitude. Also dropped 2 moa at 100 yrds compared to the same bullet with 11.8 grains that travelled supersonically. Will try to get a audio/video of this in action. It is really QUIET!! .308 with the can is loud in comparison. 100yrd group

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Re: A "quiet" rifle build.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tucsondave</div><div class="ubbcode-body">It is really QUIET!!</div></div>

Hints the name 338 "Quiet"
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Thats really awesome tho.
 
Re: A "quiet" rifle build.

Looks like one hell of a good time, make sure you bring it out when you come PDog hunting, we'll have to do some sneaking up on the PDogs and get some on video of them being shot at 10ft away....LMFAO
 
Re: A "quiet" rifle build.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Smokin99</div><div class="ubbcode-body">Looks like one hell of a good time, make sure you bring it out when you come PDog hunting, we'll have to do some sneaking up on the PDogs and get some on video of them being shot at 10ft away....LMFAO </div></div>

.338 sneaky
 
Re: A "quiet" rifle build.

Whats with the wiener in the ear? LOL

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tucsondave</div><div class="ubbcode-body"><object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/9789GwxFhSk"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/9789GwxFhSk" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>
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Re: A "quiet" rifle build.

Videos?

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Re: A "quiet" rifle build.

Thanks for the videos, Dave. I've been looking forward to this one. Great build! It's been cool to follow this one from conception to end. I'm already thinking .338 whisper for the DTA....

BTW that looks like a hell of a range you guys have at your disposal.

Looking forward to seeing what you come up with next.
 
Re: A "quiet" rifle build.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: huntinaz</div><div class="ubbcode-body">Dave, Have you ran that on steel yet? If so how far have you got with it? </div></div>


Took it out to 548 yards and was hitting the steel gong with a very light pong sound. Nothing like a .308 or .338 sound. Takes a while for it to travel out there too.
 
I've been working on the .338 BR for a while and shooting them has proven to be a lot of fun. The quiet aspect is wonderful and this has been the most hollywood quiet rifle I've seen yet. On the other hand the round is capable of firing supersonic in a pretty impressive way. 200gr Hornady SST's at 2200fps or a little more, 300gr Matchkings at 1650+. I know the point is more for the subs but its possible to use the round for higher velocity and flatter shooting. Its quieter supersonic than my .338 Lapua because the powder charge is about 30% and the velocity is lower. Recoil is low and even with full power supersonic loads you can't get enough powder in the case to blow up a pistol can.... at least a well designed can. Heat can be an issue in semi or full auto but most of us aren't using this round for full or semi. Its too expensive and time consuming to load ammo.
I love the DTA SRS because of the ability to change the barrels and bolts out quickly. I've got the .338 Lapua, .510 whisper, .338 BR and 6.5 X 47 Lapua for this rifle and can switch as desired.

The 3 rounds in the picture are the .338 BR with a 200gr Hornady SST, .338 BR with the 300gr SMK and the .308 with standard 147gr FMj.
The suppressor is my own build for the .338 Lapua. It works well for the BR as well as the 6.5 X 47. I've done about 5 of the .338BR's for the SRS so far and 6 or 8 of the 510's. Mags have been the problem for the 510 due to the shoulder retention feature of the DT mags.

Neat guns and a neat round, well worth building with any of the available actions.


Frank
 

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