Ben,
I don't think tests are required just look at how much of the case is not supported in a Springfield. When all you have to hold pressure is the case head you need good brass. Too hard or too soft and you can have problems. I am not aware of any modern action that does not try to give the case as much support as it can get. When putting a barrel on a Springfield one can do a better job of supporting the case than was done on the original but some brass is still not surrounded/supported by steel. I remember when Winchester changed the model 70 that was the one advantage to the new action that made any sense.
How ever if you want to donate some actions I can get together with Sherman Bell and we could do some. I have spare bolts and
barrels so all that would be needed are actions.
Cheers,
Laurie
