Here is something for you they are based off of 6.5 X 55 Swede they others are a 6 X 55, and a 22 X 55, the thing I like about them well actually there are several things first they fit into a short action hold 55gr of powder. And as far as brass untill lately you could still get Lapua brass for $69.00 per 100. OH and you can beat the snot out of them and they never say boo no loose primer pockets nothing, which is kinda ****in me off I do not like to be out done. left to right 69gr Sierra, 70r Nosler, 87gr Vmax. I have always like the name of the color of this stock Jacaranda it makes me chuckle every time.
Here is a pic thatI found while looking for something else.
It is my 17 twist 30" RUM barrel just before I installed it
side by side 308 50gr of powder 300 RUM 100gr of powder same 110gr Vmax.
The Vaportrail on this thing is a sight to see.