Anyone with 300 whisper experience?

[hitman49]

16 in is about as good as it gets. Your using pistol powder so it burns fast and anything over 16 in you will be losing FPS

[dolomite_supafly]

I have never done a 300 Whisper but what I have done is a Savage chambered in 7.62x25 Tokarev. It uses .308 bullets it just doesn't have the case capacity the Whisper does. The biggest reason I chose the Tokarev is because I can buy and shoot CHEAP surplus in a pinch. Another plus was that dies were way cheaper and I could buy brass cheap or just buy off the shelf ammo to reload. Most of my loadings were with heavy loads at subsonic levels but I could load lighter stuff to amazing levels. One load was a 110 grain varmint bullet at over 1700 FPS, it was MOA accurate.

This project really shined once I started developing loads using heavier stuff. Using certain powders and heavy bullets I was able to work up a load that was as quiet as a subsonic 22 lr out of a 10/22 but still have energy levels above a 357 magnum. I loaded some 180 grainers that were 1/2 MOA and very quiet with no muzzle flash when fired at night.

Here are a few pictures of the rounds in case someone missed my post from a few months ago.
Here is a 168grain SMK loading compared to a 45 ACP when I was still using surplus cases:
http://img.photobucket.com/albums/v446/Adyth/Savage/S5000149.jpg
http://img.photobucket.com/albums/v446/Adyth/Savage/S5000151.jpg

Here are a few threads detailing the build:
http://savageshooters.com/SavageForum/index.php/topic,24552.msg178031.html#msg178031
http://savageshooters.com/SavageForum/index.php/topic,23066.msg170179.html#msg170179
http://www.ar15.com/forums/topic.html?b=6&f=2&t=285746
http://www.ar15.com/forums/topic.html?b=6&f=5&t=279046

If you have any questions just ask.
Dolomite