I recently purchased an upper chambered in 300 Wisper caliber. I have yet to load any ammo.

1. Does anyone have any favorite loads for this caliber in Supersonic and subsonic?
2. What seems to be the better suited bullets for supersonic and subsonic?
3. What are everyones general thoughts on this caliber?

I have a 300 Whisper with a 1 in 10 barrel. This is good for the bullets up to about 185/190 grain shooting supersonic. Subsonic loads can be done for lighter bullets with this barrel.

I love the heck out mine. It holds less than 1 in groups for ALL ammo fired at 100 yds. Easy on the should (no recoil), and light weight.

Check out this link for more info:

[url]http://www.quarterbore.com/300whisper/[/url]

Do a web search for 300 Whisper and you will come up with a bunch of sites that have loading data on them.