416WSM on Siamese Mauser & 416/348Ackley Improved on Martini

Well this one is going in the bin, after I finish machining it to proove the concept.
When machining the profile, I did not lock the Y axis and at a point it self fed and ruined the profile.
Profile
20260809_171608.jpg

You can see where the Y axis moved.
20260809_171622.jpg

The dovetail slot for the front sight all went well.
But using the slitting saw for the front hood turned to crap. Due to the diameter of the saw, and how I had it set up, I needed to lift the saw to get over and machine the other side. Even though I had set the zero point when I came down on the other side, even though the readout said zero, the slots are at differnet heights. The right hand slot i had 2 cuts and it looks NQR!
20260809_171638.jpg

I am going to finish it, to make sure I understand all the issues. The next step is to round out the barrel band. I need to make up a mandrel so I can hold it between centres with an indexing table on the mill and possibly the tool & cutter grinder.
 
BlueFlyer said:
Well this one is going in the bin, after I finish machining it to proove the concept.
When machining the profile, I did not lock the Y axis and at a point it self fed and ruined the profile.
Profile
View attachment 783360
You can see where the Y axis moved.
View attachment 783361
The dovetail slot for the front sight all went well.
But using the slitting saw for the front hood turned to crap. Due to the diameter of the saw, and how I had it set up, I needed to lift the saw to get over and machine the other side. Even though I had set the zero point when I came down on the other side, even though the readout said zero, the slots are at differnet heights. The right hand slot i had 2 cuts and it looks NQR!
View attachment 783362
I am going to finish it, to make sure I understand all the issues. The next step is to round out the barrel band. I need to make up a mandrel so I can hold it between centres with an indexing table on the mill and possibly the tool & cutter grinder.
Click to expand...
I pressed the like button, as there isn’t one for "bugger". You can only consider it a learning exercise, or maybe make it into a slimmer fixed blade for something else
Gumpy
 
I am in two minds. I like the hood as on the CZ550 but they come of too easily in scrub. When they stay on they are good at protecting the front sight. More important for the flimsy glow in the dark types. If your front sight is going to be built like a tank, think SMLE type, then no hood needed.

Ascetics. The hood can look good or bad depending on the overall look of the rifle .........and the person looking at it :) I like those on the Win M94 and CZ550 for looks. Just need a bit of super glue to keep them there.

If possible have an opening in the hood, at the 3,9 and 12 O'clock positions to let light onto the sight.
 
Overnight I thought of another way to machine the barrel band portion. I have an 8" 4Jaw chuck that I can clamp onto my rotary table for the mill. This is far more rigid than the other way I was thinking.
20260810_130846.jpg

The setup always takes alot longer than doing the cuts.
20260810_132425.jpg

It turned out pretty well. I am going to use this method, when I make the final version.
20260810_134608.jpg


20260810_134640.jpg

I then rotated the mill vice by 3 degrees to machine the ramp.
20260810_144743.jpg

Happy with the results
20260810_145240.jpg

20260810_145246.jpg

I forgot to take a photo of the final setup for the last cuts. I held the sight ramp in the vice after I squared it up. Then I ran the 1/2" end mill down the sides of the ramp.
20260810_161251.jpg

With a bit of motivation using the soft hammer it is a snug fit on the barrel.
20260810_162849.jpg

20260810_163003.jpg

20260810_163357.jpg

The final version that I put on the rifle will be longer and slim down more where it meets the barrel. I am not going to bother with the grooves for a hood.
 
Just a query, is it going to fit further back on the barrel than in the photo? The reason I ask is if the end of the barrel crown is damaged and needs to be cut back, and there isn’t enough material to remove the sight will need to be removed to fix the problem, cleaned , re-attached and blued, I’ve done this for someone and they didn’t like the bill I gave them at the end
Gumpy
 
Williams front sight ramps have a small protruding tit somehow machined into the hood slots on both sides. The hood has a corresponding notch cut into both sliding edges so the hood locks into the tits when hood slides onto ramp. The hood is then really stuck on the ramp! I used a grinding wheel on Dremel tool to bevel the leading corners of Williams hood sliding edges so it slides onto the ramp easier.
 
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