I purchased a used Savage 116 in 7mm mag with factory brake. LGS installed a Millett TRS-1. I loaded up 20 rounds for a ladder test and 10 rounds with 61gr imr4350 to sight in with.

2 shots at 25yrds adjusted windage and elevation.

Moved target to 50 yrds

3 shots at 50yrds touching in a lateral string.. ( Exactally what I wanted to see)

Moved target to 100yrds.

3 shots 7 inches high 3.5 inches high and group size 3+inches.

Moved back to 50yrds, 3 shots .680 group. Back to 100yrds 3 shots 2.8 inchs
WTF!!!!!!!

Brass is once fired, full length sized, trimmed to length, 61gr imr4350 (medium load) cci mag primers nosler ballistic tip seated .10 off lans measured with Hornady comparator. Gun on bench with front and rear bags temp 77° [no crono to measure velocity]

Where do I start with problem solving, I have only been reloading for a 9mths so my knowledge is not as extensive as others... I have other powders to try but not sure if this is a gun problem, ammo problem, or scope problem...

I havent ruled out scope but my 50yrd groups are consistant when I mobe target so im kinda stumped.. any troubleshooting help is appreciated!

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