Pretty much everything has been said; I can't add much of value here.
They are a FINE rifle and likely the single most accurate military semi-auto ever produced.
The direct-impingement gas system is the big bugaboo here. The rifles were designed to function in 40 below temperatures and nobody cared what became of the brass. Result is that they fling the brass about the landscape, sometimes at velocities which are outright dangerous. I have seen one throwing Norwegian seal-hunting empties (156-grain load designed for the old Krag) at speed, a full 60 yards.
This can be tamed to a great extent by modding the gas system to allow LESS gas to get to the heavy Bolt Carrier, thus reducing velocity of ejection. You already have instructions on how to do this.
An alternative would be to remove the stainless-steel washer from the rear end of the Gas Tube, clean it, weld it solid and then drill a smaller hole through the middle. Then you try it in the rifle and, if all works well, leave it as it is. Should the hole need to be larger, it can then be drilled-out larger. Swedish military Armourers had a KIT containing a number of different sizes of washers and a TOOL for removing/replacing the things. The rifles were sold as surplus, along with a number of Tool Rolls, but none of the Armourers' Kits with the stainless-steel washers and tools seem to have surfaced.
No matter: after modification, as before, you are limited to a fairly-narrow range of loadings. Best bet is to stick with something fairly close to MilSpec (which actually was an accurate and pretty-hot load which you can dupe with a 139- or 140-grain bullet: excellent for Moose). Stay with fast powders: 4064 and quicker. Load for consistency and accuracy will follow.
Hope this is some help.
They are a FINE rifle and likely the single most accurate military semi-auto ever produced.
The direct-impingement gas system is the big bugaboo here. The rifles were designed to function in 40 below temperatures and nobody cared what became of the brass. Result is that they fling the brass about the landscape, sometimes at velocities which are outright dangerous. I have seen one throwing Norwegian seal-hunting empties (156-grain load designed for the old Krag) at speed, a full 60 yards.
This can be tamed to a great extent by modding the gas system to allow LESS gas to get to the heavy Bolt Carrier, thus reducing velocity of ejection. You already have instructions on how to do this.
An alternative would be to remove the stainless-steel washer from the rear end of the Gas Tube, clean it, weld it solid and then drill a smaller hole through the middle. Then you try it in the rifle and, if all works well, leave it as it is. Should the hole need to be larger, it can then be drilled-out larger. Swedish military Armourers had a KIT containing a number of different sizes of washers and a TOOL for removing/replacing the things. The rifles were sold as surplus, along with a number of Tool Rolls, but none of the Armourers' Kits with the stainless-steel washers and tools seem to have surfaced.
No matter: after modification, as before, you are limited to a fairly-narrow range of loadings. Best bet is to stick with something fairly close to MilSpec (which actually was an accurate and pretty-hot load which you can dupe with a 139- or 140-grain bullet: excellent for Moose). Stay with fast powders: 4064 and quicker. Load for consistency and accuracy will follow.
Hope this is some help.
