Dont have one John, but if its for a SPR esque rifle i would opt for something like the SN-4 1.5-6 if its i think on that rig you might benefit from a variable power as opposed to fixed power. I assume its going on a Compass Lake gun?
John;
Can't help on the fixed 6, but I have a 1.5-6 with the JNGMOA reticle.
If you want to try one out I can ship you mine for a week or two trial. All it will cost you is one-way shipping.
John, I had a ST-10 and it was great. I know it's not the ST-6, but they can't be a far cry different...
It was tough as shit, even withstanding a 5' drop mounted on my AR-10 straight onto the scope. I sold it to replace it with a variable, but kinda wish I had kept it.