IMR 8133

[Dosh]

Tried it in my 30/378 Wby when 8133 was quite plentiful, went with the mid charge from IMR site. Ruptured a case and had heavy bolt. Start low and work up slowly. Went back to Retumbo.

 

[Dosh]

Similar to retumbo in my 25-06. A touch slower, actually a little better velocity on top end. Pretty bulky. Have not tested beyond a ladder test.

Retumbo is the tops in 25-06, glad more are loading it.