My semi-weight 375 H&H is not fluted
TOBY, so I cannot give you a factual answer
If you asked me to guess, I would say that a pretty educated guess is that the fluting takes about 4 ounces off the barrel weight, therefore I would think that a fluted semi-weight .375 H&H barrel is very likely around 3 lbs. 8 oz.
See here under verified weights (except for the 25.6" .416 22 mm barrel - NOT the 23.6 Selous .416 22 mm barrel). You can configure at will your DG R8
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Note that you can reduce the rifle weight by selecting a Leupold VX-6HD 1-6X24 instead of a Euro 1-6x24 scope. This will typically shave 3 oz.
I am assuming that by "semi-weight receiver" you mean an alloy receiver with a barrel channel that accommodates a semi weight barrel, right? FYI, my semi weight .375 H&H measures 21.5 mm at the end of the fore-end, and 19 mm at the muzzle. I do not know what the Selous barrel measures at the end of the fore-end, but it could be (?) that a semi weight barrel tappers outside of the stock from 21.5 to 19 mm, while a Selous barrel does not tapper and stays at 22 mm from fore-end to muzzle. Maybe
BeeMaa can check that for us?
What I know is that a semi weight barrel fills up very nicely the barrel channel designed for the Selous barrels on the steel receiver stock:
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Note: observe upon close examination that the widening of the stock channel to "safari/Selous" barrel contour is obviously done by Blaser by hand, as there were numerous tool marks inside the channel and the widening is not strictly geometrically regular. I have verified with other steel receiver owners, who have observed the same thing, our own BeeMaa being one of them...
This is only visible up close, and is fixed by polishing with fine grit sand paper, but I would have expected better from Blaser. I am reasonably sure that I would have done a cleaner job with sand paper wrapped around a wood dowel, and if I needed an alloy receiver stock with large barrel channel, I would not spend $300 additional to buy a so-so job from Blaser but I would buy the standard stock and I would enlarge the barrel channel myself...
Based on the above table, a .375 H&H semi-weight fluted barrel .375 on a alloy receiver stock, without kickstop installed, and with a Leupold scope will likely weigh in at 9.5 lbs.:
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The same configuration with a .416 barrel will likely be about 3 oz. lighter because the bore hole is larger. This would give you a scoped & "slinged" .416 Rem around 9 lbs. 5 oz. Take the sling off, and you have an even 9 lbs.....
If a 9 lbs. .416 Rem is too heavy for you, you are much more man than I am when it comes to shooting it
Admittedly, my Mauser 66 .458 Lott is 8 lbs. 13 oz., but I will be the first to say that it is distinctly unpleasant to shoot and I never dared put a scope on it
By comparison, a .375 H&H standard barrel .375 on a alloy receiver stock, without kickstop installed, and with a Leupold scope has a verified weight of:
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