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03-28-2024, 06:44 AM
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Join Date: Jan 2008
Location: Edmonton, AB
Posts: 16,996
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300 roy 24 vs 26 inch barrel velocity difference?
How much fps do u lose in a 300bee. For ex. 180 gr pill using a 24 in barrel over a 26 inch using the same load? Just curious. I know game wont notice much.
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Alberta Bigbore
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03-28-2024, 06:56 AM
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Join Date: Dec 2008
Location: Camrose
Posts: 45,263
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You will probably see about 70- 80fps difference, about the difference for 30-40 degrees difference in temperature, for many loads.
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Only accurate guns are interesting.
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03-28-2024, 08:14 AM
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Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,621
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Quote:
Originally Posted by Alberta Bigbore
How much fps do u lose in a 300bee. For ex. 180 gr pill using a 24 in barrel over a 26 inch using the same load? Just curious. I know game wont notice much.
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My quickload program says 61 FPS difference, but there are many variables involved, and tgatcwas with just one powder (4831sc) as an example .
In the real world is is not a big deal, oarticularcrifle many deliver a higher muzzle velocity, for example.
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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03-28-2024, 08:24 AM
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Join Date: Dec 2010
Location: Look behind you :)
Posts: 27,784
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Mine has the 26” and if I had it rebarrelled I would go with the same. Fair bit of powder capacity best burned up in a 26” barrel in my opinion.
LC
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03-28-2024, 08:37 AM
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Join Date: Dec 2008
Location: Camrose
Posts: 45,263
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Quote:
Originally Posted by Lefty-Canuck
Mine has the 26” and if I had it rebarrelled I would go with the same. Fair bit of powder capacity best burned up in a 26” barrel in my opinion.
LC
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Mine also had a 26" barrel, as did my 257wby,my 300RUM rifles, my 8mmremmag, my 338x8mm, and all of my 7mmstw rifles. If I am going to bother with the larger capacity cases, I want to get the extra velocity that a 26" barrel produces. Then again, I don't use brakes, so there isn't 2" of brake added to the barrel length.
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Only accurate guns are interesting.
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03-28-2024, 09:39 AM
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Join Date: Dec 2008
Location: Near Edmonton
Posts: 15,153
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Quote:
Originally Posted by elkhunter11
Mine also had a 26" barrel, as did my 257wby,my 300RUM rifles, my 8mmremmag, my 338x8mm, and all of my 7mmstw rifles. If I am going to bother with the larger capacity cases, I want to get the extra velocity that a 26" barrel produces. Then again, I don't use brakes, so there isn't 2" of brake added to the barrel length.
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Spot on. If you want a short barrelled gun with a 19-22" barrel, go 30-06, 308, 280, 7-08 and the like that burns half the powder. I would do a 7 Rem mag or 300 WM, 338 WM in 24" as they burn 65-75 grains of powder. Any Bee, Rum or cartridge that uses 90+ grains of powder needs at least a 26" or 28", maybe even a 30" barrel to optimise the extra powder being burned.
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03-28-2024, 09:52 AM
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Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,621
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If I were looking at a new rifle ,I certainly would want to get a 26".
A 24" woukd not be a deal breaker though.
Not something I am looking for however!
Cat
__________________
Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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03-28-2024, 01:33 PM
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Join Date: Jul 2023
Posts: 53
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Quote:
Originally Posted by elkhunter11
If I am going to bother with the larger capacity cases, I want to get the extra velocity...
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X2.
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