Long Time Long Ranger
Well-Known Member
I have now accumulated quite a bit of data with the Mcmillan EOL Outdoorsman in 300 EOL Magnum and decided I have enough data to make a determination about accuracy and loading data to begin a thread on it. The barrel is a Schneider 26" 1-10" twist with a Vias brake. The scope used in the test is a Nightforce 5.5x22.
This rifle is designed for long range hunting with the 210 grain Berger bullet. The chamber is cut to allow the 210 grain Berger hunting bullet to be seated at the lands and allow proper feeding of the rifle which it does. The cartridge OAL is 3.7695" when this bullet is seated to the lands in this rifle.
What I wanted to achieve with the test is to determine the accuracy of the rifle at ranges to 1000 yards with the 210 grain Berger bullet it was designed for. Also for hunters who may be interested in the rifle however choose not to shoot the Berger bullet I wanted to know the level of accuracy that can be achieved with other top long range bullets and factory ammunition for the hunters who do not reload. I tested known accuracy loads with the 200 grain Nosler Accubond, 208 grain Hornady A-max and 180 grain C32 Cutting Edge bullets along with a box of factory Remington cartridges loaded with 180 grain Nosler Partion bullets. For the test I used Retumbo and replaced H-870 with WC-860. Those have been my two best powders for the 300 RUM and the two I have the most data for. Since H-870 is discontinued I replaced it with WC-860 which I have used to develope some extremely accurate loads with heavy bullets in other cartridges.
I will return in a couple hours and finish with an edit. This will be in stages.
This rifle is designed for long range hunting with the 210 grain Berger bullet. The chamber is cut to allow the 210 grain Berger hunting bullet to be seated at the lands and allow proper feeding of the rifle which it does. The cartridge OAL is 3.7695" when this bullet is seated to the lands in this rifle.
What I wanted to achieve with the test is to determine the accuracy of the rifle at ranges to 1000 yards with the 210 grain Berger bullet it was designed for. Also for hunters who may be interested in the rifle however choose not to shoot the Berger bullet I wanted to know the level of accuracy that can be achieved with other top long range bullets and factory ammunition for the hunters who do not reload. I tested known accuracy loads with the 200 grain Nosler Accubond, 208 grain Hornady A-max and 180 grain C32 Cutting Edge bullets along with a box of factory Remington cartridges loaded with 180 grain Nosler Partion bullets. For the test I used Retumbo and replaced H-870 with WC-860. Those have been my two best powders for the 300 RUM and the two I have the most data for. Since H-870 is discontinued I replaced it with WC-860 which I have used to develope some extremely accurate loads with heavy bullets in other cartridges.
I will return in a couple hours and finish with an edit. This will be in stages.