7MM or 7-08
I think at 135 lb the 7-08 will do the job. I have a young friend Mike (age 19) that only weighs 100 lbs, he shoots a Remington 710 in 270 and he got his first moose at 300 yards with it. I am a little jealous and proud of him because he got his first moose at 19 and I am 50 and haven’t got one yet. Because of his size, he now wants something better that will get the job done is compact, and not brutal to shoot. I just had a new shorter action Remington 700 BDL barreled up from 6mm to 7-08 that I can’t wait to shoot. I have to shoot liter rounds, as I have a spinal injury, and heavy recoil short-circuits my ability to walk.
I am going to get Mike to try out my 700, in 7-08 when I go to the range.
Question about the Tikka, can the stock be shortened if they are synthetic? If you are of average height it won’t matter. The comparison of ballistics in one of my books "Cartridges of the World" shows the 7mm magnum and a 7-08 with 140-grain bullet differs only about 200 feet per second, and 200 pounds of muzzle energy. Two hundred feet, or pounds of energy, wouldn’t really matter to a deer or moose if the shot were well placed.
I am a 7X57 and 7-08 fan (I have 10 or 12) so my opinion might be prejudicial, but then I dislike getting beat up shooting at the range. As another member noted the savings of 7-08 in reloading is a plus when looking at the cost of shooting. The 7-08 is pleasant to shoot and a sleeper, as pointed out by another member.
Go with what fits you, is within your budget, it's appealing to look at, and not because it's a status symbol.
My vote is go with the 7-08.
Albayo