Gunsmithing Rem 700 feed ramp notching

[DTL]

I've seen a few pictures of notched or relieved feed ramps, to clear longer loads/mags, but no detail on how it was done in a mill. For the guys that AREN'T doing this with a Dremel: What size endmill are you using? How deep are you going? Does the notch go on-center or does it have to be offset any? Are you blending or polishing the top and bottom of the ramp, or just leaving it sharp, as machined? I'm trying to get as much info as I can, before I put bit-to-metal. When I do, I'll try to take some pictures so the info's there for the next folks who need to know.

 

[PCR]

In a 700, in most cases you can cut .125" into the feed ramp on center with a 1/4" endmill will work for you, but put your rifle together first and see if that will be enough for your bottom metal, mag and ammo length to feed. Brake sharp edges after milling with cratex and a dremel. I've never milled more than .100" into to fix.

Put a scope rail on the receiver to level in your mill vise and fill the chamber area with paper towels to keep metal dust and chips out of they counter bore.

 

[mcfred]

I'm trying to get as much info as I can, before I put bit-to-metal.

My $0.02:

http://www.snipershide.com/shooting...7-wsm-build-now-new-barrel-2.html#post3147706

 

[Keith Johns]

Most aftermarket actions we've seen that have notched feed ramps, look like they were done with a .250" end mill, .125" deep.

We do the same, but going a little less than .125" in, and chamfer the sharp edges.
The tip of the bullet passes through the notch, and doesn't ride up the notch at all... the tip of the bullet impacts the ramp above the notch, so chamfering doesn't have to be as aggressive as you might think.

 

[DTL]

Thanks for the info, everyone. I'm going to try to get on the mill in the next few days. I appreciate the sanity check!