W.R.Buchanan
05-18-2015, 01:35 PM
OK guys, I have a friend who has a M71 Mauser, and a 71/84 Mauser. Both are in .43 Mauser but apparently one has a much larger bore than the other. One shoot PP boolits great the other sprays them.
He has made cases out of .45-90 cases as recommended on the Case Forming Forum but they only fit in one of the guns.
He wants me to ream out the chamber so that these cases will fit both guns. I am not going to do this, but instead find out exactly what is going on that is different between the guns.
Can anyone give me some idea of changes in bore/groove sizes made between these 2 models. There is @.020 difference in the slugs of his guns. I need to know if this normal or if his guns have bad barrels. Bboth are pretty nice looking guns and the bores look nice and shiny.
He wants to be able to use the same loaded rounds for both guns, but I don't think that is going to happen. I certainly don't want to alter the chamber on one of these guns which would be a one way trip, and ruin the value of the gun and make it more difficult for the next owner to deal with.
Just need to know a little more about any differences these two models might have.
All info appreciated.
Randy
He has made cases out of .45-90 cases as recommended on the Case Forming Forum but they only fit in one of the guns.
He wants me to ream out the chamber so that these cases will fit both guns. I am not going to do this, but instead find out exactly what is going on that is different between the guns.
Can anyone give me some idea of changes in bore/groove sizes made between these 2 models. There is @.020 difference in the slugs of his guns. I need to know if this normal or if his guns have bad barrels. Bboth are pretty nice looking guns and the bores look nice and shiny.
He wants to be able to use the same loaded rounds for both guns, but I don't think that is going to happen. I certainly don't want to alter the chamber on one of these guns which would be a one way trip, and ruin the value of the gun and make it more difficult for the next owner to deal with.
Just need to know a little more about any differences these two models might have.
All info appreciated.
Randy