Zeroing Problem .300 Win Mag

[Canada Goose]

Took my .300 Win Mag Remington 710 topped with a 4 x 14 buckmaster to the range today to zero it in. I was shooting earlier in the year with match bullets and some spitzers so it wasn't bad on paper already. At 100 yds I was getting one inch groups, or just over, with my new hunting round. This new round I was testing today is a 180 gr Nosler E-Tip sitting on top of Reloader 22. These are handloads. So, as I said I was getting M.O.A. at 100. Back out to 200 yds and I was grouping 8-10 inches. I was shooting off a lead sled, so I was sure not to pull. I did not feel like I was yanking these shots. What gives? There was about a 15 mile tail/cross wid, but I did not think it would affect my group that drastically. Solutions?

[dbHunterNY]

  Canada Goose said:

Took my .300 Win Mag Remington 710 topped with a 4 x 14 buckmaster to the range today to zero it in. I was shooting earlier in the year with match bullets and some spitzers so it wasn't bad on paper already. At 100 yds I was getting one inch groups, or just over, with my new hunting round. This new round I was testing today is a 180 gr Nosler E-Tip sitting on top of 75.5 grs of Reloader 22. These are handloads. So, as I said I was getting M.O.A. at 100. Back out to 200 yds and I was grouping 8-10 inches. I was shooting off a lead sled, so I was sure not to pull. I did not feel like I was yanking these shots. What gives? There was about a 15 mile tail/cross wid, but I did not think it would affect my group that drastically. Solutions?

first i'd check all your scope mounts, scope (loose crosshairs), and action screws. a quartering wind i think would have to be blowing pretty good to push groups out to 10" with that load. after that i'd maybe change up your hand loads. what i think.

[Canada Goose]

I've checked the mounts several times. Wouldn't it be throwing them at a 100 too if there was a loose screw?

[Strut10]

At (an estimated 3050 fps) it should take yards, your E-Tip 325-350 yards to be out that far in a 15 mph 90 degree crosswind. At 200 yards it would take about 35 mph crosswind to get you 8-10 inches off.

Maybe your rifle is just not stabilizing that particular bullet well and it takes the extra 100 yards for it to show up. I'd say try another 180 grain bullet or two. See what goes.

[Jeramie]

  Strut10 said:

Maybe your rifle is just not stabilizing that particular bullet well and it takes the extra 100 yards for it to show up. I'd say try another 180 grain bullet or two. See what goes.

That would be my guess too. I would shoot some factory ammo at that distance to help rule out a few things. If you get tighter groups with the factory you know its the loads.

[Canada Goose]

So what your telling me is that I should buy a different box of $40 slugs? Sigh

[dbHunterNY]

  Canada Goose said:

I've checked the mounts several times. Wouldn't it be throwing them at a 100 too if there was a loose screw?

With the way you worded things, I wasn't sure if you grouped at 100 yards after you tried 200 yards. Yea, you're right it wouldn't group at 100 either.

[Canada Goose]

Picked up some Hornady's SST's today. Hopefully they will shoot tighter.

[hunterbobb]

I hate to bad mouth another mans gun and I thought long and hard before deciding to answer. However, I have heard and seen so many complaints where Remington 710's were involved that I have concluded they are crap. I owned one for awhile and could never get it to group well. If I were you, I would sell it and get a Remington 700 instead. You will find when you try to sell it you will get almost nothiing for it. All the gun shops know they are junk and are having trouble selling the ones they have. Sorry man I feel your pain.