Matching scope to rifle

[TagPrincess]

I have a tikka 6.5 CM with 20” barrel and a tikka 300 WM with 20” barrel. Both will have a suppressor. I have a Trijicon credo 2.5-15 x42 and a SWFA 3-9x42. I can’t decide which scope to put on which gun.

On the one hand, bigger gun = bigger optic… put the credo on the 300. On the other hand, the 6.5 will be used for mulies and 300 for elk. Perhaps the higher mag is better for smaller game… put the credo on the 6.5.

Any insight is appreciated.

 

[wnelson14]

If you're using a rail and high-end rings you could swap them out and switch depending on what you're doing, but I would sell the credo and pick up a 3-15 or 3-9 SWFA and they would be virtually set up the same.

 

[TagPrincess]

That makes sense to have the same make of scope. Any logic to a 3-15 vs 3-9 on a deer vs elk rifle in the Rockies?

 

[wnelson14]

That makes sense to have the same make of scope. Any logic to a 3-15 vs 3-9 on a deer vs elk rifle in the Rockies?

Thread '2025 Black Friday Deals'

Oct 30, 2025

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• Glendon Mullins
• Replies: 424
• Forum: Gear Deals

Thread 'Would you buy this scope?'

Sep 12, 2024

Scope specs:

FFP 3-12x40 to 3-12x44mm

Consistently holds zero through 3-foot drops and 3,000 rounds of constant use.

The reticle is specially designed for 25 to 600 yards, with bold outer posts and correct center aiming references.

Zero Stop

Low profile top turret.

Capped windage.

Large eye box

Good glass

20oz


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• Ryan Avery
• Replies: 1,688
• Forum: Optics

• 
• 

Bunch of great info in these threads, you could go either one.

3-9= lighter weight, more compact design, lower profile turrets, durable, returns to zero

3-15 gen 2= zero stop, capped turret capable, throw lever knob, durable, reticle is slightly different, some say 15x isn’t as usable

I believe most people using either of these are still shooting game in the 5-8 mag range anyway.

Personally I like the look of the 3-9 on shorter barrel rifles vs the 3-15, But that’s purely cosmetic.