The Craftmans Shop > Backyard Ballistics

.22 stealth

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Scuba1:
Thanks for the heads up. as from factory, the Walther Lothar match barrels come with this chamfer so I just renewed it. I'll try it out as it is now and then if the results are not up to my liking, change it to a sharp end. Having looked at my 22-250 and that has a light chamfer on it as well and that shoots sub MOA. See how it goes but I'll keep your tip in mind and change as required.

Thank you

Michael

andyf:
Michael and Murray, my curiosity was aroused, so I had a look at my .22 rimfire target rifles, an Anschutz Match 54 and a BSA Martini Mark III. Both are chamfered, and though long in the tooth, still shoot more accurately than I can.

Andy

Scuba1:
Thanks for the heads up. as from factory, the Walther Lothar match barrels come with this chamfer so I just renewed it. I'll try it out as it is now and then if the results are not up to my liking, change it to a sharp end. Having looked at my 22-250 and that has a light chamfer on it as well and that shoots sub MOA. See how it goes but I'll keep your tip in mind and change as required.

Thank you

Michael

Jonny:
Looks too long for the standard Lothar basic barrel. In fact it looks like a Lothar Walther bog standard spec from tubing, used to be £15 each buying 50 off in a crate still got two left.

Though your intensions are right, you have gone about it the wrong way. You should have trued up from the bore not the o/d, its not uncommon to find out of centre bores more so on tapered barrels on cheap centrefire.
Next question has the choke been cut off?

A chamfer is easier to do than a smooth unrounded flat face, i have a tool does it in 3 secs.
To back up above the most accurate barrel i have ever come across for air rifles was an old Hammerli hammer forged from the 70's - 5 shots at 55 and 60 yards not even leave a .22 hole. Bent like a banana at one time, straightened and twanged like a tuning fork with polished 1200 grit flat face at muzzle. My £7k Anchutz and March's wont do that on a good day.

Changing the weight of the hammer will affect the power curve as its only a knock open unregulated rifle. ie harder to open the valve at 232 bar than at 70 bar with same preload and hammer weight. = no power the higher the pressure put in. Normally set right an unregulated will gradually rise then tail off again. Also have to keep dumping air in bottle to unscrew the knock open valve to adjust, right pain.

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