Ha! 300 with a 5R ? Just wait man, with that gun 300 will feel like a wast of ammo. Get a scope that will let you shoot out to 1000y now to save your money in the future.
I have a 5R 308 as well that I use for long range. When it comes to glass, weather your range is 300y or 1000+ there are some things you want as a must and some things you need to make a choice on now rather than later.
Must features - It must feel right. The glass must be very clear on the highest zoom. Must have External parallax adjustment, you are cheaping your self out if you go with out it. The scope must track properly. This takes more research than anything. Some scopes have a bad rep ,,, stay away from them. Sightron has this Exact Track system in there scopes. Very neat. Worth looking up. A lifetime warranty also goes along way.
You must decide how you want to use ur scope. - You can adjust range by Turrets or mildots. IF you plan to use center crosshairs all the time than go with a scope with good target turrets. Some resistance and an audible click is handy. Look at the scopes Max MOA adj, a good chunk is a good chunk. When it comes to reticule go with very thin cross hairs. Mil dots are useless.
- If your using mil dots. Get a fixed zoom scope (10x is best). most #1 important thing. Find one with .5 mil hesh marks or better. I highly recommend IOR with the mp-8 reticule because it gives you 10 mils of elevation. One good thing about the fixed zoom scopes is they are built very durable.
Personally I use a Sightron SIII 10x42 fixed with MMD. With my center crosshair at 600y im good out to 900y with out adjusting the turret. The Leupold mark 4 M1 10x with TMR is a great scope. I dont find the glass much better but it offers a larger field of view. Its nice but not worth the extra $1000 over the sightron. IOR Valdada has a 10x42 as well with the mp-8. They are about $500 cheaper than the Leupold as well and worth every penny. Kind of hard to find in Canada but peter dobson @
www.hirschprecision.com might be able to get you one.
If 300m is honestly the max your gona shoot..... even a 3x9x40 bushnell will do the trick for you. Ill give you one for $120 with rings if you want. pm me.