Thread: 6x45 Rem barrel

Watching with interest I've tried BM8208 with the 75gr Sierra and found the pressure was higher for the same velocity as my preferred H335 load. I gave CFE223 a twirl as well and that suited the 80-90gr bullets nicely, better than H335. Good to see some interest in this round.

Originally Posted by Mathias

Watching with interest I've tried BM8208 with the 75gr Sierra and found the pressure was higher for the same velocity as my preferred H335 load. I gave CFE223 a twirl as well and that suited the 80-90gr bullets nicely, better than H335. Good to see some interest in this round.

I based my load on Hornadys load data which was a touch under the max load and a very full case for H4895 which they list as the best powder for the highest velocity with many bullet weights in 6x45

In previous experience with BM8208 in .22 and 6mm cartridges, Ive found it likes lighter loads not a full case and often shoots much tighter groups than any other powder.

While this little 6x45 screams with the lighter varmint type 6mm bullets I see no real advantage using it over a .223 which is why I want to develop a 90gr Nosler BT load for it which is a great little deer bullet as it has a thick copper base unlike the lighter jacket 60-80 varmint bullets available in 6mm.






The new Hornady 90ELDX is also a great contender for this test.
My only real limitation in the CZ 527 is mag length. Id say the other little internal mag mini Mauser will do better for the heavier bullets pulled out a bit longer. For this very reason I may have to stay with a lighter but more solid bullet in my CZ for deer.