Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: is this a first or second focal plane?
Document: Mounted this on a DPMS LR-308 with 1 inch mounts, boresighted it and took it to the range and started at 50yds and was on paper first shot. had a 3 shot group inside 1 inch after 6 shots. Stepped out to 100 yds, 6 more shots and had a group inside 1 inch. Clear glass, love the turrets and the solid 1/4 moa clicks. I personally prefer the second focal plane myself, but be sure to read the the manual.
Great scope this is the first from Vortex I have Two Kahles and several other lesser makes this scope is one of the best I have owned for the money.
I purchased the MOA reticle model. Zeroed it at 100 yds and practiced out to 435 yards. The most accurate scope and gun combination I have ever owned. Quickly adjust from 40 to 435 yds ( or further if you have the range.) Shot my first deer at 100 yds and it was so easy it was amazing. Shot hit EXACTLY where I aimed. At one stand it was so dark I could hardly see but through the scope, it had collected enough light for a shot out to 200 yds.
You should be aware that this particular model of the PST line is a SECOND FOCAL PLANE model for those who know the difference and care. Vortex scopes are highly rated and are one of the best values out there in the middle to high range scopes.
Works great, perfect match for the 20WSSM. The clarity and adjustment are right on. focus wheel is good access. No improvement required.
This is usualy reserved for higher ter optics. Another thing that sets the Viper PST aside from others is the ranging is done in the highest magnification and doubles as it decreases magnification. For example 24x is 1MOA or 1" at 100yards spacing. This is great for longer distance accurate ranging. The scope also does not change eye relief when magnification is changed. Vortex even throws in a 4" sunshade free of charge.
This is a great scope for the money! Vortex filled this scope with wanted options. I'm not saying this scope is better then top ter optics but for the money it works. I would compare the quality of this scope to the Leupold Mark 4 LR/T. I purchased the 6-24x50 w/ EBR-1 reticle in MOA. Vortex offers this scope in Mil-radians for Mil applications. I however like the MOA model. It's very easy to use the reticle for ranging.
These scopes are ok if you do not care about repeatability. Ive used this scope for competition and it for sure is not a competition scope. Go with nightforce or leupold much much better scopes.
Right out of the box the scope put me about 10 inches low and 11 inches to the right. I double checked the mount and screws and they were fine. I am doing a process of elimination as to why it is shooting so far off. I got it dead on at 50 yards, but was way off to the right by 10 inches at 100 yards. Not sure what is going on, but everything else on the scope is great.
If you are in to long range shooting or hunting, this is a scope to consider. There is also a FFP version for a few C's more, but I prefer SFP. Glass is super clear and images are sharp.
Answer: yes