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I read a post a while back from Pete Single (a.k.a. Metal Smith on the 1911Forum) in which he noted the following with regard to checkering BHPs:
"BROWNING HI-POWERS: BETTER MEASURE BEFORE YOU CUT OR YOU MAY BE SORRY. Hi-Powers are very thin where the F/S meets the grip panels, average .025 to .032 not counting for a low spot. I once had a customer that had to have a checkered Hi-Power, he sent at least 10 before I measured one that was .038 not counting a .005 low spot. Lets say you have .030 to work with and put 30 lpi on it at .022 deep. Well, what’s left of your F/S is about thick as a beer cans, a whopping .008 at best. Go with 40 lpi at .017 deep that leaves you with .013, big deal, sheet metal on cheap car is thicker then that. BEWARE if it is a newer Hi-Power with a cast frame, these are the ones coated with black epoxy paint and serrations at mag-well opening. I’ve heard of people checkering these and when finished giving the grip a good squeeze and the F/S crack and fall out. There are way to correct all these deficiencies above and are easier said then done. To correct the Hi-Power it will set me back the better part of a day in labor. In short, to correct: You will have to fabricate a new F/S, if you are going to do this modification and make a new F/S do what I do and make a bar of them while you have the machine set-up so you’ll have 2 or 3 extra. Make them extra thick so you can checker them any lpi you wish. I make an aluminum backer the size of the mag-well with removable copper shim plates to back the weld, V out the welds joints for 100% weld fill. If the F/S has a serial number in the center you have more problems, you will have to get the BATF involved to relocate the serial number, good luck and hope you get a very understanding agent."
I have been wanting a BHP with checkering done and this does raise a few concerns. Pete does all the checkering for Novak's shop, so he does speak from considerable experience with BHPs. I know Garthwaite has moved serial numbers. Is it really that big of an ordeal? Which frames are the best candidates for checkering? I have never had 40 lpi checkering on a front strap. It seems like that would be too fine. Anyone done 30 lpi on their BHP?
DD
<font size=-1>[ This Message was edited by: Desert Dog on 2001-04-13 10:04 ]</font>
"BROWNING HI-POWERS: BETTER MEASURE BEFORE YOU CUT OR YOU MAY BE SORRY. Hi-Powers are very thin where the F/S meets the grip panels, average .025 to .032 not counting for a low spot. I once had a customer that had to have a checkered Hi-Power, he sent at least 10 before I measured one that was .038 not counting a .005 low spot. Lets say you have .030 to work with and put 30 lpi on it at .022 deep. Well, what’s left of your F/S is about thick as a beer cans, a whopping .008 at best. Go with 40 lpi at .017 deep that leaves you with .013, big deal, sheet metal on cheap car is thicker then that. BEWARE if it is a newer Hi-Power with a cast frame, these are the ones coated with black epoxy paint and serrations at mag-well opening. I’ve heard of people checkering these and when finished giving the grip a good squeeze and the F/S crack and fall out. There are way to correct all these deficiencies above and are easier said then done. To correct the Hi-Power it will set me back the better part of a day in labor. In short, to correct: You will have to fabricate a new F/S, if you are going to do this modification and make a new F/S do what I do and make a bar of them while you have the machine set-up so you’ll have 2 or 3 extra. Make them extra thick so you can checker them any lpi you wish. I make an aluminum backer the size of the mag-well with removable copper shim plates to back the weld, V out the welds joints for 100% weld fill. If the F/S has a serial number in the center you have more problems, you will have to get the BATF involved to relocate the serial number, good luck and hope you get a very understanding agent."
I have been wanting a BHP with checkering done and this does raise a few concerns. Pete does all the checkering for Novak's shop, so he does speak from considerable experience with BHPs. I know Garthwaite has moved serial numbers. Is it really that big of an ordeal? Which frames are the best candidates for checkering? I have never had 40 lpi checkering on a front strap. It seems like that would be too fine. Anyone done 30 lpi on their BHP?
DD
<font size=-1>[ This Message was edited by: Desert Dog on 2001-04-13 10:04 ]</font>