25 January 2010, 06:59
30 Caliber Mag Fan6.5mm/.264 X .300 Winchester Mag. Wildcat
Friends-
Has anyone built a 6.5mm/.264 Wildcat off of the .300 Winchester Mag case?
If so what are your thoughts?
Thanks in advance.
25 January 2010, 08:36
ramrod340People already have trouble getting a barrel long enough and powder slow enough to get much performance incease in a 264wmag over a 6.5-06. Looking at the larger 6.5-300Wby and 6.5STW case don't add much as well. I sure wouldn't go to any expense to add 7 grs of capacity.
Just as info. Running QL with a 26" barrel 130AB and a slow powder like 870 adding 7grs of case capacity allow me to increase max charge by 2.78grs and gave 19fps increase. 4% charge increase and .5% velocity. Keeping a 264 case and seating the bullet to 3.60" gains you 8fps
It's your $$
03 February 2010, 18:07
ramrod340Appears you need to be a memeber to see anything.

09 February 2010, 19:48
MarcI think Finn Agaard built a 6.5x300 Win. He wrote about it in American Rifleman several years ago. He did not find it to offer any advantage over the 264 WM.