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I use Jerry's products From the Python to the Predators-----if you get much dust on a BAT which I have some of those as well you will notice binding when working the bolt. Been there done that. I shoot BR and am not on the ground which would make the dust and dirt problem a little more pronounced.
Both are outstanding products.
Curious that everybody pings on the BAT for being 'tight' in dusty locations.
The shooter I mentioned above shoots Prone (and occasionally F-Class, when his wife forces him) on ranges like Sacramento (dry and gritty from what I've heard), Raton (definitely sandy/gritty) and Rattlesnake - where if you don't sneak your muzzle far enough forward of the front of the berm will result in you getting a face (and action) full of sand after each shot in a headwind (dominant condition, no less)...
I know I've never had any problem with a Savage action in such conditions; and I can't imagine Bud sticking with the BAT actions if he had any problems as such... might have to call him and pick his brain on the subject (he doesn't really use a computer very often).
Milanuk
I do know one piece of sand on the lug locked up my 10" BAT tighter than a drum. We had to take the barrel off, and the sand left an indentation that hat do be smoothed out. No hard evidence, but the metal seems to be slightly softer than others.
I love the BAT but would not pick it for a hunting gun for sure
BH