Hatsan Stock Swap - Badness or Madness?

I have been inspired by AGN and the tinkering and experiments reported on by members here. In a dream over the weekend (no joke) I found myself wondering whether the walnut stock on my .177 Hastan Mod 95 springer could be swapped with the synthetic stock on my .22 Hatsan Mod 87 Vortex QE? The two stocks appear to have the same screws, bolts, and trigger guard assemblies so my fevered imagination wondered if the internals would permit a switch.

Sane readers will, at this point, ask, "Why?" I can only say that I love wood stocks, especially when they have a really nice grain pattern with some element of character showing through. Not being a hunter I don't have much concern about beating up my stock out in the brush so synthetic just isn't really my thing, I also highly value a quiet air gun since my primary use is in backyard shooting where good manners and a healthy fear of having Mr. Law called on me are important factors. Now, the Mod 95 is by no means a throaty beast and I've had no complaints while shooting pellets over the 7.8 gr limit I've imposed on myself; anything under that and I get the sharp supersonic CRACK! that neighbors detest. My .22 Vortex QE, on the other hand, is consistently quiet and has a smoother shot cycle. In short, I want the best of both in a single package.

Last night I gave in to my baser impulses and began this experiment. The two stocks can, indeed, be swapped. I have no idea what this has done to my accuracy (such as it is) since it had grown dark by the time I completed my infernal shenanigans and emerged from my laboratory. Having re-seated the complete barrel/piston/trigger assemblies in the respective stocks I have to believe that my next week of shooting will be spent in zeroing my guns again. As Steve over at AEAC says, that's all part of the process. I'll work up some photos and post 'em in the "Show 'Em Off" thread for anyone interested. More to the point, I'm excited to see how/if the switch has done anything surprising to the balance of the guns and the efficacy of my hold while shooting each. More to come.
 
Well, not only am I a failed mad tinkerer, but I am a tardy one as well. I did the swap as proposed. I assessed the capabilities of the respective guns as a result of the swap. And I swapped 'em back. While each action did fit into its respective alternate stock configuration, the balance was off in both cases (not surprising) and the Mod 87 action was really, REALLY crunchy in the 95's walnut stock (alarming!). I worried something was about to crack each time I cocked the rifle.

So here are the lovelies in their restored states, nestled in the low-tech, low-dough set up I've cobbled together using a Plano Double Scope Rifle case and some mattress padding I have on hand.

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Honestly, the Mod 87 just looks cooler with that swollen QE shroud and black trigger mated to the black synthetic stock. I've grown to love that gun! Here's another photo of the 87:

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In this case the 87 rests on the Plano organizer case I have liberated from my wife's quilting kingdom (or maybe it was part of my daughter's short-lived jewelry design period) and now use as my pellet selection. As seen in the photo, the bottom two rows of cells are all the .177 pellets, from 7.0 gr plinkers and waddies to 10.5 gr Crosman Premium Domed. The upper two rows segregate the .22 pellets in similar fashion: CPHPs, Benji Discoverys, JSBs, Gamos, and RWS are all there. No lack of entertainment each time I pull out the smoke poles, I tell ya.