I am 6' 5", about 200lb. I can clearly recall telling others here that they need to work out more if they find their implements overly massive.
That was before I had my bouts with cancer and heart disease. I think differently now, and am far more inclined to give heed to such questions about whether a rifle needs to be as heavy as many are. Personally, I think a lot of the thinking about heavy rifles is less about experience and more about expectation. At the same time, I am faced with the simple fact that heavy rifles usually win.
I see rifle mass as having value in at least two areas. First, massive rifles are usually more rugged. Then, they use that mass to absorb the heat generated when firing.
So the next question is, should we build more rugged implements and treat them with impunity, or should we take better care of less rugged ones?
And the one after that is, why do we need to be able to contain the heat of sustained fire when we profess to be able to achieve our goals with a minimum of repetition.
Given the current norms, I would not feel confident in my own ability to compete in, say, the SH Cup. I'm just not up to it. I'll go further and gladly concede that reducing the average winning rifle's weight by a large fraction would not change that conclusion.
But that does not make said reduction so undesirable for others.
So, if one were to apply that weight reduction, how might it be accomplished in a productive manner?
Let's look at the barrel. A massive barrel can absorb much heat and retain it without losing accuracy, as long as the thermal cycle does not allow internal stress to distort its aim. Unfortunately, barrel steel conducts that heat away less freely than other materials, so that heat, once accumulated, takes time to dissipate.
A barrel with a considerably lesser profile will heat up faster and attain a higher peak temperature from the same overall heat input, and will retain it for about a similar duration, mainly because the barrel metal's thermal conductivity is not as good as others, and also because the skinnier barrel's lesser surface area contacts less air into which that thermal energy can be redirected.
Well obviously, we could shoot less, and that's not a completely unreasonable approach. It's just that in the times when that's not an option, not having the option could be unpleasant, perhaps even lethal. So that's not always such a desirable approach.
I have a rifle with a sporter barrel that hold its zero unusually well as it heats and I treasure it carefully, but I'm not going to offer it up as a solution here.
An extension of its utility could exist, however. If one were to encase that narrow barrel in an intermediate medium that redirects that heat more quickly to a far greater area in contact with the air, that extension could be realized.
Such a barrel exists, it is far lighter than the massive barrel, yet retains its accuracy and stability in a very similar manner.
This is that barrel. It weighs
less than half of what an equivalent varmint weight barrel would. It also sheds comparable amounts of thermal energy
a lot faster. I have been told personally that testing has demonstrated that after firing five rounds, it has
no infrared signature.
It's not the only thing that can be done to reduce rifle weight, and it ain't cheap, but it's a large step in a useful direction.
Lighter rifles recoil harder, no arguments. The .260 Rem and the .280 Rem recoil less than say, a .308 or a .300WM, but they can still get the job done at comparable distances.
Greg