Re: Scope for Remington 700 5R .308 Win
Your making a good decision going with NF. It's one of the most rugged scopes you can buy and will last a lifetime, plus the quality is second to none. Personally I would recommend against your exact choice though and here's why.
First a 56MM objective will require you to use higher rings and will sacrifice your cheek weld so I would recommend staying with the 50MM. NF 5.5-22, 8-32, and 12-42's all range on 22X which is way too much for your normal shooting conditions, you will run into issues with mirage and field of view. I know people say "you can dial down to 11X and double your values" well that only works so well, I've seen plenty of people lose scoring points at matches because either it wasn't perfectly accurate when ranging a UKD target or compensating for a miss or they forgot to double their values in the heat of the moment.
Either way 22X is way more scope than you will ever need for a 308. The 15X would be a much better choice in a SFP scope. With 15X you would rarely run into issues with mirage or FOV and it's plenty of magnification for much farther range than the 308 round is even good for. Think of it this way, if it's enough magnification to see a 1/4 or 1/2MOA target at 100 yards its enough magnification to see that size target at any distance. So in other words its more than sufficient magnification for holding the accuracy any known rifle is good for.
Now if you were talking about a FFP scope that you could use the reticle on any magnification there would be no probably getting a -20X, -22X, -25X or whatever because you could always dial it back and depend on accurate holds but you simply can't rely on that with a SFP.
