warbirdlover
New member
Bart B.
So my statement was pretty much correct?
So my statement was pretty much correct?
So my statement was pretty much correct?
I disagree. So do other top classified competitive shooters. Especially those who are also avid varmint shooters who have their hunting rifles built to the same accuracy level as their match rifles.Varmint shooting and competitive target shooting are very different in the their effects on barrel life.
What's the actual difference between 46,000 CUP and 60,000 PSI? That's two different pressure measuring systems that don't give the same numbers for equal pressure in the chamber. SAAMI specs for peak pressure in the 7mm Rem Mag's only about 13% higher than the 7x57 Mauser round.Some cartridges are extreme examples - for instance, 7X57 Mauser. Factory loads are only 46,000 CUP, 2,660 fps MV, with 139/140 grain bullets. Low recoil, long barrel life.
But, handload it to about 60,000 psi (same as 7mm Rem Mag), and you get 2,950 fps MV, noticeable recoil, and about half the barrel life.
That's looks pessimistic Bart B.
Maybe match barrels heat up more and wear faster.
Bart B. said:exactly what is a "more practically oriented shooter?" Exactly how far in inches do you accept missing your point of aim at 100 yards? 300 yards? 500 yards?
Point of aim's where the scope's reticule center (or center of metallic/iron sight picture) is on the target when the round fires. It's a finite point, not an area of several square inches in size.
One may want to have the bullet strike no more than 1 inch from that point. Maybe 2, 3 or 4 inches; perhaps no more than 1/4 or 1/2 inch. Depends on their objectives.
That's probably because there's no difference in the accuracy different ways of making barrels as well as the types of steels used as long as the bore and groove dimensions are uniform throughout the barrel's length. Some methods are easier to do that others and some barrel makers pay more attention to detail than others. There's as many cut rifled barrels winning matches and setting records as their is button rifled ones these days. And those broach cut service rifle barrels in the early 1960's shot just as accurate as the best button and single point cut rifled barrels as used in competition in that era. Even Winchester's hammer forged 30 caliber match barrels were popular with folks using them in M1 and M1A match conditioned service rifles, but one had to use match bullets larger in diameter than .3085" and excellent accuracy was attained.I did not see anybody talking about barrel material or how the barrels are made .
Bart B. said:Point of aim's where the scope's reticule center (or center of metallic/iron sight picture) is on the target when the round fires. It's a finite point, not an area of several square inches in size.
.the front bead on my Winchester 94 subtends (covers) almost 6" at 100 yards