Ok......haven't posted much advice in the last year.....but here it goes.
I've given 'Peter' a lot of my $ in the last few years, so I won't just say aluminum sucks butt.
Read my post about mounts.
http://www.canadiangunnutz.com/forum/showthread.php?t=35091
This new mount looks nice, very close to SA 3rd gen mount.
The secret to the SA mount was all in the 'precision alignment tool' aka The hammer. The aluminum needs to mate with steel just right.....tighter the better. Add a dab of blue loctite and you're fine, actually I put about 10k down the barrel of one M305/sa gen 3.....it never, EVER MOVED>
My main complaint was the mounts sky high rail, looks to be the same with the new Canadian mount. Back then I went the now 'old' style arms, now only SEI products for me. not as low as arms.....not as high as SA.
So what I'm getting at.....mount that mount just right.....it should treat you OK for paper and then some. If your wanting a tack driver....you might just have to spend the extra on a steel mount.
That's all I have to say about that.
GG&FB