Using PMII 3-20x50 on TRG 22 and SP10 with QDP-4602 – viable plan?

[Filip]

Currently running a Schmidt & Bender PMII 3-20x50 on my Sako TRG 22 (6.5 Creedmoor) using a Spuhr ST-4701 (35 mm height, 7 MIL cant, direct to dovetail).

I recently bought a Seekins SP10 in .308 (18” barrel) and I’d like to run the same scope on both rifles.

I’m considering switching to a Spuhr QDP-4602 (34 mm tubering, 38 mm height, 6 MIL cant) and installing a low-profile 0 MOA Picatinny rail on the TRG.

That would let me swap the PMII between the two rifles using QD, and use marked zero offsets.

⸻

My questions:

1. Do you think this is a solid plan or would you recommend running two separate optics instead?

2. Is there any practical downside to the increased scope height on the TRG (from 35 mm to 43 mm centerline)?

3. Any experience with RTZ performance using QDP mounts across bolt and gas guns?

Appreciate any thoughts or feedback!

 

[Part Timer]

Really, you can make anything work with enough effort - or money. I guess if you're alright verifying your zero every time that you swap it, it would work, but why not just hit the easy button and get another scope?

 

[Filip]

Really, you can make anything work with enough effort - or money. I guess if you're alright verifying your zero every time that you swap it, it would work, but why not just hit the easy button and get another scope?

Yeah, totally get what you’re saying — getting a second scope would definitely be the easiest way.

For me, it mostly comes down to budget. A second PMII (or anything close) is a big investment, and right now I’d rather put that money toward ammo, training, or maybe another optic later on.

If the QDP setup holds zero well enough, it seems like a pretty reasonable compromise.

 

[VargmatII]

You will grow tired of switching the scope around, I promise.

Also, QD scope mounts sucks. All of them...Thats my opinion anyways.

 

[sheepdog697]

You could get a very nice used optic in a performance class just below the SB for reasonable price.

I just picked up a gen 2 rzr 4.5-27 in a geissele super precision mount for 1500. Its not "as nice" as the SB but what is it,... 90%?

Just a thought. I played with sharing an optic between two rifles and it wasnt a lot of fun.

 

[tekmann2377]

I would do two separate scopes. If I had to swap, would rather use a bolt on mount instead of QD, it really doesn't take any more time, just have to have the tool (which is minimal).

 

[Filip]

Thanks for the honest feedback — I really appreciate you sharing your experience.

It sounds like a few of you have tried sharing optics between rifles and found it more trouble than it’s worth. Fair enough, and that’s exactly the kind of insight I was looking for.

That said, I’m curious — what specifically did you find to be the biggest downside? Was it having to verify zero every time, issues with return-to-zero, or just the hassle of keeping track of adjustments?

I was under the impression that high-quality QD mounts like Spuhr tend to hold zero fairly well — or is that not the case in practice?

I wasn’t planning on fully re-zeroing every time. The idea was to zero the scope on the TRG, then apply a known elevation offset when moving it to the SP10. I’d mark the rail slots and verify with a shot or two.

Does that still sound like a bad plan in your experience?

 

[sheepdog697]

Thanks for the honest feedback — I really appreciate you sharing your experience.

It sounds like a few of you have tried sharing optics between rifles and found it more trouble than it’s worth. Fair enough, and that’s exactly the kind of insight I was looking for.

That said, I’m curious — what specifically did you find to be the biggest downside? Was it having to verify zero every time, issues with return-to-zero, or just the hassle of keeping track of adjustments?

I was under the impression that high-quality QD mounts like Spuhr tend to hold zero fairly well — or is that not the case in practice?

I wasn’t planning on fully re-zeroing every time. The idea was to zero the scope on the TRG, then apply a known elevation offset when moving it to the SP10. I’d mark the rail slots and verify with a shot or two.

Does that still sound like a bad plan in your experience?

Verifying zero was the big one.

 

[VargmatII]

I get that the struggle is real to have a Schmidt for each rifle, the prices on them here in Sweden went full retard a few years ago.
But switching the scope, which is probably the most important part of your rifle system around is just annoying.
You will still have to go to the range to check zero between each switch and it will get annoying really fast.

The only way I can see that it would work, is that if you use your rifles like this:
Say that you shoot Fieldshooting and do various hunting during fall and winter with the TRG. Then you move the scope to that rifle and keep that going until spring.
Then at spring time, you switch over to shoot with your Seekins. So you move the scope over and shoot that rifle during spring and summer. That way, you only move the scope over 2 times a year. That would be ok in my book.

Do you run the original stock on the TRG or something like the KRG whiskey3 folder?
Im asking since the folder has easy adjustments to cater for a taller mount. If you choose to go that way.

MVH

Varg @ Skytteguiden

 

[Filip]

Thanks a lot for the input – really appreciate the advice from those of you who’ve actually tried this in practice.

Just to make sure I’m understanding you all correctly:

It sounds like most of you feel that switching scopes between rifles is technically doable, and that precision can be maintained if done right, but that it becomes impractical or annoying in the long run?

Is that a fair interpretation? That it’s not about whether it works, but whether it’s worth it?

I’m using the original TRG stock with the adjustable cheekpiece. With the QDP-4602 and the low Sako rail, the scope centerline ends up around 43 mm.

Do you think that’s too high for the TRG stock, or should it still work out with a bit of cheekpiece adjustment?

Thanks again — it’s super helpful to get these different perspectives.

 

[Filip]

I would do two separate scopes. If I had to swap, would rather use a bolt on mount instead of QD, it really doesn't take any more time, just have to have the tool (which is minimal).

Thanks! I actually decided to go that route — ended up switching to a fixed Spuhr mount instead of QD. We’ll see how well it works, but I’m optimistic.