Frank, while I understand your dilemma, I will say this. If choosing your ammo lots carefully, you will most likely find that the same lots will shoot over several rifles. I routinely shoot the same ammo lots in both my Sporter and heavy guns and do okay with them. Also, being in SW PA, you have several ranges that shoot IR fairly close.
I have purchased 4 IR Sporters since May of 2023. I kept one and sold the other three. Two went to new IR shooters, the other went to an experienced shooter, but she lives in Australia and that's where that rifle lives now. They are out there, and many are very reasonably priced. If you dive in, try to find one for sale that already has a scope on it that makes weight. Light weight scopes that meet the power restriction and have the reticle and turrets BR shooters want are not always easy to find. Sporters are built with the scope weight included and if the original scope is no longer with the rifle, it can be difficult finding a replacement that will make weight. Example: I just sold a V-1 Turbo Sporter I bought used in April. It has a Leupold M8-6X Compact on it. It was built with that scope, which weighs less than 12ozs. My backup Sporter was built with a scope that weighs 17.4ozs. That scope would not work on the Turbo I sold, and getting almost 5-1/2ozs off of an existing Sporter is pretty darn difficult, if not impossible.
Scott