Responding to .284 Winner.
What's that term - "datum length" ??? The .280 has a longer one than the .270 & .30-06 to prevent .280 rounds from being jammed into a .270. Like minus .04 or so headspace. This prevents a simple neck down of .30-06 brass to make 7mm-06 rounds using Lapua or other high quality brass. Available .280 Rem brass is the nickel (electro) plated Winchester brass that shows poor annealing resulting in premature split necks. Remington .280 brass is difficult to find; Nosler might make it. My LGS only has Winchester brand.
To get around this dilemma I neck up .270 brass to .30 then run it into a backed off .280 die without expander button. A good crush fit is obtained and the brass is then fireformed . After that the usual fussing with neck turning. .30-06 brass is .049 shorter than .280 Rem.
A common sense alternative would be to shoot a .284W and avoid all this. I think Lapua 6.5-.284 brass could easily be necked up. My problem is that I have 2 FN Mausers in .280 Rem. Experimentation using dummy .284 Win rounds showed feeding problems, at least in my rifles. The .03 fatter diameter of the .284 W just in front of the extractor groove and the rebated head caused problems. These FN Mausers, commercial versions of the famous M98 Mauser rifles, are sort of antiques designed to reliably feed .473 diameter rounds and I don't want to mess around with them.
I am not a serious hunter and mostly shoot rodents and steel targets. I have shot some deers with my .280 and it kills them real good even when they are almost a quarter mile away. Right now I am shooting Hornady 150 ELDX bullets using IMR 4831.
What's that term - "datum length" ??? The .280 has a longer one than the .270 & .30-06 to prevent .280 rounds from being jammed into a .270. Like minus .04 or so headspace. This prevents a simple neck down of .30-06 brass to make 7mm-06 rounds using Lapua or other high quality brass. Available .280 Rem brass is the nickel (electro) plated Winchester brass that shows poor annealing resulting in premature split necks. Remington .280 brass is difficult to find; Nosler might make it. My LGS only has Winchester brand.
To get around this dilemma I neck up .270 brass to .30 then run it into a backed off .280 die without expander button. A good crush fit is obtained and the brass is then fireformed . After that the usual fussing with neck turning. .30-06 brass is .049 shorter than .280 Rem.
A common sense alternative would be to shoot a .284W and avoid all this. I think Lapua 6.5-.284 brass could easily be necked up. My problem is that I have 2 FN Mausers in .280 Rem. Experimentation using dummy .284 Win rounds showed feeding problems, at least in my rifles. The .03 fatter diameter of the .284 W just in front of the extractor groove and the rebated head caused problems. These FN Mausers, commercial versions of the famous M98 Mauser rifles, are sort of antiques designed to reliably feed .473 diameter rounds and I don't want to mess around with them.
I am not a serious hunter and mostly shoot rodents and steel targets. I have shot some deers with my .280 and it kills them real good even when they are almost a quarter mile away. Right now I am shooting Hornady 150 ELDX bullets using IMR 4831.
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