If you want my 2 cents and you did ask.
That is too much scope.
I would also use a Leupold and it would be a 3X9X40 or 3.5X10X40 Non-AO with duplex reticle sighted in 2.75" high at 100 yards. Hold on the animal and you will have meat in the freezer or your mount if you do not keep the meat. This has worked well for me for many, many years. I have taken game at ranges from 3 feet to 600+ yards with the above scopes.
On my last Africa trip my daughter and I used the 3X9X40 Leupold scopes and took 20+ head of game at ranges from 135-480yards(used rangefinder to see how far) and all were one shot kills on PG. I also shot some 20 approx other animals for control purposes at 250-350 yards.
I did recently put a 4.5X14X40 Leupold set up like above on a new 257W for my next Pronghorn trip. This is replacing the 3.5X10X40 I had on the last 257W. The 3.5X10X40 now sits on top of my 265win mag. Both rifles are used for long range shooting as well as closer range. I have never felt under scoped using the above(3X9X40) scopes.....especially with a 30-06 class cartridge.
Also consider that you have a Tikka(they are great I have 2) and a large scope looks out of place on them.
The 50mm len also causes you to have an in-natural cheek weld. You really gain nothing for hunting with the 50mm lens contrary to some peoples misguided understandings about scopes. Stick with the 1"" tube, 40mm lens and the factory mounts are just fine. One thing to do is put a Limbsaver Direct Replacement Recoil Pad on the Tikka. You will be happy you did.
That is my 2 cents.
Flame away boys............especially the ones who know everything but have done little hunting and probably with less success. Good old arm chair quarterbacks. Got to love them
Well there is my 2 cents.