They adjust per stated value.
They RTZ if ya wanta play with different loads and record the dope.
They hold zero.
The glass on my SII 3-9x42s (3 of em) is clear and crisp edge to edge.
The eye box comes up easy and doesn't black or white out without delibrately trying too.

They do all 3 things a leupold wont do basically.
Adjust per stated value ,rtz, and hold zero...

Lifetime warranty for original buyer.
Price difference upgrade for discontinued models.

Plenty of discontinued models out their for sale.
But now they go for top dollar.
I purchased one nib from a place in ND for 135 shipped.
And 2 from members on here NIB for 125 to 135.
Just keep your eyes open
Sierra trading post had a fire sale on the SII,s last year.
Guys on here were snagging em like crazy.
I drug my feet and they was gone.
I have seen em online from 175 to 280 ish now, used and nib.

I have seen SII,s 1.75-6×42,s
Big sky 3.5- 10 x42,s

I used a SI 3-9x40 on my daughters H&R USH 20 ga
Shooting Hastings 410 gr slugs.
Hardest recoiling gun I ever shot honestly.

Shot alot and I mean alot of those rds.
That scope never lost zero

Really the only issue i have with some of their models is short tube main body lenght
On my mod 70 ot6 and my 8mm sako mauser
I have about 1/8th to 3/ 16ths ring clearance on the ends.
But their are off set rings for that also if ya need that.

Last edited by renegade50; 06/10/19.