I just started reloading for the .460 Weatherby not too long ago and set up the dies just as the manufacturer instructed. However, I think the resizing die is pushing back the shoulder. I have trouble loading loaded rounds, they give heavy resistance for about a half inch behind the shoulder. I pulled back the dies to where it resizes about a little over half the neck. However, with it set back this far, the case is not resized all the way down to the top of the belt. Is it OK to not have my die come down onto the belt? Thank you.

Hey KennethI, Is there a particular reason you want to "Partial Resize" your 460Wby?

On any rifle carried into Dangerous Game areas, I always recommend that it should be Full Length Resized. Here is how you do that:
You set the FL Die by screwing it in until it touches the Shell Holder on a raised Ram, lower the Ram, screw the FL Die in an additional 1/4 turn and set the FL Die Lock Ring.

If you are determined to P-FLR, here is how you should do that:
You set the FL Die by screwing it in until it is about the thickness of a Nickle above the Shell Holder on a raised Ram. You Lube and Resize a Case, remove the Lube and try it in the Chamber. Lower the FL Die 1/8th turn or so and repeat the process. You might reach a point where you CAN NOT close the Bolt or where it is very difficult to close. Screw the FL Die in 1/16th turn and repeat until the Bolt closes with "snug" resistance. If you go too far, back the FL Die up 1/8th turn and try again on a different Case.
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In either situation, immediately after Resizing, wipe the Lube off and try it in the chamber while it is still unloaded. With P-FLR, you want a slight "crush fit" or the bolt should close with a bit of resistance.

If FLRed, you should feel only the normal resistance of closing the Bolt. If it is a Remington action, there will be a small amount of resistance as the Extractor snaps over the Rim. If using a Controlled Round Feed action, the bolt should close with the same effort as if there was no Case in the rifle.
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You mentioned:

quote:

I have trouble loading loaded rounds, they give heavy resistance for about a half inch behind the shoulder.

This could be a problem you are creating during Bullet Seating " if " the Seating Die is screwed in too far. That will cause the Case to "flair out" a bit below the Neck and perhaps be causing your problem.

1. Take the Seating Die out of the Press.
2. Put an empty trimmed Case in the Shell Holder and raise the Ram.
3. Screw the Seating Die into the Press until you can feel it touch the empty Case and back the Seating Die out 1/2 turn.
4. Hold the Seating Die where it is and lower the Seating Die Lock Ring until it is snug, but DO NOT screw in the Set Screw.
5. Adjust the Seating Stem all the way up and then adjust it to the proper height for the bullets you are using and tighten the Jam Nut on the Seating Stem.

Now, if you want to "Crimp" the Case:

6. Loosen the Seating Stem Jam Nut and back the Seating Stem all the way to the top of the Seating Die.
7. Loosen the Seating Die Lock Ring.
8. Place a Loaded Cartridge in the Shell Holder and raise the ram.
9. Lower the Seating Die until it touches.
10. Lower the Ram.
11. Lower the Seating Die 1/4th turn and snug the Lock Ring in place.
12. Begin Crimping.

If you intend to Crimp, just set the Bullet Depth so the Case Mouth is near the top of the Bullet's cannelure, but where you can still see a small portion of the cannelure. You need to Trim, Deburr and Chamfer the cases after every firing to make sure the Case Length is consistent.

Thank you Hot Core.

Seems like you are not pushing the shoulder back enough.

I the gentlemen are correct. You're not sizing it down far enough. Screw the die in further. I have the same problem on my 338/378.