The RUMs are so far overbore'ed that they dont come into there own with less than
the 160+ grain Bullets. Somewhere around 180 grains is the optimum bullet weight.
They are real barrel burners if you go much over 3300 ft/sec velocity.
They will push a lighter bullet very fast but you will pay dearly for that speed.
There are much better calibres for 110 grain bullets that dont need 90 to 100 grains
of powder to reach those velocities.
For fast and flat the lightest I would go is 150 grain bullets.
Also at those velocities you will have jacket issues with some bullets.
J E CUSTOM