The 25-204 is a virtual clone of the 257 Kimber without custom dies or intricate case forming. Ive been shooting one since 2005. I was looking at the 257 Kimber when 204 brass was released and realized that the 204 brass was so close to the Kimber that it was a better deal to neck the 204 to 257. The 204 worked out so well that I built a 6mm-204 and 22-204 in 2006. Gary Readers 257 Raptor is the same às a 25-204.
PacNor chambered a 25cal barrel with a 204 reamer and cut the neck and throat separately to the dummy rounds I sent to them.
It is a little heavy handed with 75gr Vmax at 3150fps if your saving pelts on coyotes. The 100gr Partition at 2850fps is perfect for deer and I load the 85gr NBT at 3000fps for Javelina and antelope if I get a tag. 86gr bulk cast bullets over a pinch of 800x works great for small game.
For an AR I would think the 25-45 would work better with 85-90 gr bullets.
Last edited by erich; 03/15/23.
