[McCalliberry]

I am thinking of getting a remington sp-10 for deer hunting, what range would be the most effective for this to be used on deer? Thanks

 

[WILDCATT]

50 to 100 yds max wwith slugs /30 to50 max with buck

 

[A5Mag12]

You should just get a 12 gauge. Much better ammo selection and most have slug barrels you can get for them which will give you 1 1/2" groups at 100 yards.