tenxes wrote:
He does not have to use the Talley setup so opening up steel rings with some meat is an option. As to the signatures, I have opened up 1" to 27.5mm (early Lymans) using exactly that method. You clamp the inserts in the rings and do it a bit at a time with a 1/2 low speed drill and a set of calipers. The plastic inserts have so much give that it is easy and they do self align. So don't be too quick to say "it can't be done" if you have not. He still has not explained what 22-250 he has that only Talley bases are an option.Is there a modern bolt action rifle that Weaver bases are not made for? Need more info. |
I thought he said he already had Talley Rings, but I see he said Talley style bases. At any rate, the difference between 1" (25.4mm) and 27.5mm is only 2.1mm. There isn't enough material in the insert nor between the insert i.d. and the steel ring i.d. to accommodate 4mm of material removal to go from 30mm to 34mm. I'm holding them in my hand as I speak. I'd say you got somewhat lucky in making that work, as sandpaper wrapped around a dowel is not a precision way to make a hole, calipers or not, not to mention a perfectly straight hole that doesn't end up canting the scope in some direction. Keep in mind Burris sells offset inserts in 0.005" increments, so although the inserts do have some "give," if 0.005" difference in insert thickness is enough to correct for elevation problems, then I don't see how one can accurately keep the i.d. of the insert concentric with the rings to less than 0.005" using sandpaper and a dowel as the tool. I don't say this to attack or in any way demean you, I just don't think this is a workable option. You can bore or ream open a set of steel rings to a larger size, but 4mm is a lot of material to remove, and you will have to maintain the proper gap between the upper and lower halves of the rings plus somehow stabilize the upper ring half while doing so. Therefore you will have to put the rings in some sort of purpose built fixture to do this. Yes, I am a machinist.
Lord Windsor, I have a Nesika Model T action. I'm not certain, but I believe it uses the same bases as a Remington 700. I'm not at home at the moment or I'd measure it to be sure. If you can give me the receiver diameter and hole spacing of your front and rear mounts, I can probably tell you what mounts will fit it (Nesika being a custom action, yours may not be the same as mine). If your Nesika came with mount bases, they are probably Davidson style bases, in which case Kelbly and Jewell, among others make 30mm rings for them. You can order these rings from Sinclair International (1-800-717-8211) or http://www.sinclairintl.com/scopes.html - http://www.sinclairintl.com/scopes.html
They can also help you in determining alternative bases that fit the Nesika.
------------- Ted
Money can't buy happiness... but it's much more comfortable to cry in a Porsche than on a bicycle.
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