If I want to get better at hitting a 200yd target from multiple positions (standing, sitting / kneeling, unsupported prone) -- how important is it to duplicate exactly in practice?

In competition I'd be using a 20" AR-15, with a match barrel, TA11 ACOG, match trigger and 20-30rd magazines or a Remington 700 LTR in 260 Remington with a 2.5-8x36mm MR/T scope, TMR reticle and 10rd HS-precision magazines.

I was thinking maybe I'd set up something @ 50yds and practice with my Ruger 10/22T, but I'm wondering how efficient that really is.

The scope is different. The trigger is different. The check-weld is different. The reticle is different. The magazine-release is different. The whole manual of arms is different. The magazines are different.

A few options....

Practice with my match guns.

Duplicate my competition guns. That gives me a spare, and allows me to practice without wearing out the primary rifles.

Build something similar to my competition guns, but less-expensive to shoot.

Practice with something dissimilar to my competition guns, and hope something carries over.

Thoughts?

Mike