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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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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In the real world is is not a big deal, oarticularcrifle many deliver a higher muzzle velocity, for example. Cat |
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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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 |
Using a 26 inch barrel vs a 24 inch barrel will get you 2 inches closer to your target .
If I’ve got the choice and both rifles are the same i would choose 26 inches. If I had 2 rifles to choose from and the 24 inch had nicer wood as some Mk V weatherby’s had that would be the one |
24” for me. 2” of barrel is the same whether it is on a 308 or 300 WBY. Making one 24 and the other 26 doesn’t make them the same. Powder doesn’t burn for 26”.
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As an outlier I had styer in 270win in a 20 inch barrel...it lost 350fps from book load and what it did in a 24" custom 270...each barrel is different but I think mine was xtreme
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With a 26" barrel out hunting it is like carrying a flag pole haha
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I’ve packed 24” 300 and 7MM magnums for 30 years and haven’t had issues either. What am I losing? 50-60 fps.
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7mmremmag or a 300winchester magnums instead. |
I’ll settle for an accurate 24” pipe over a so so 26” any day. I’ve had both 24/26 inch 300 Bee’s. I don’t own a chronograph either, so my ignorance is bliss.
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I have hunting rifles with barrels from 18.5 to 29". I have a 45-70 with an 18.5 and a 375 Ruger with a 20" barrel, both heavy hitters designed for game with teeth in close quarters. I have small, mid, large and very large capacity cartridges. I have hunted and killed game with all of them and I choose the rifle to carry depnding on terrain and game. A 29" barrel is no handicap at all hunting antelope and you can reach out a really long ways with a properly setup 7 RUM. Chasing a wounded bear in willow thickets, not what I would pick given a choice.
The gun I use the most the last 12 or so ywears is a 20" 308. Very handy, and sling, scope and full mag it weighs 6 lbs 6 ounces. It spits a 150 grain boattail out at 3050 fps. I am not recoil sensitive but I would not want to be shooting that gun in 300 Win mag let alone 300 Bee. All that considered, what I do not own is anything that burns 100 grains of powder with a 20 or 22" barrel. The. Flame and muzzle blast would be ridiculous not to mention the other draw backs. The question wasn't will a 24" work, yes it will, the question was how much speed will you lose in a 300 Bee. Two inches will cost you about 100 fps, so my point is, why shoot a Bee rather than a 300 Win Mag if you don't care about 100 fps. |
If it lost 100 fps I’d be shocked. If it lost 75 I’d be shocked. I’ve cut so many barrels over the years I’ve lost count. I think the maximum I’ve ever lost is 30 fps an inch.
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Dean, the question was 24” vs 26”.
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The amount of velocity difference per inch will vary with case capacity vs bore size, and the actual barrel length. When I got into the 7mmstw, I saw data listing about 40fps/inch difference, going from 26" to 24". The 300wby has a larger bore for similar case capacity, so the difference should be slightly less than 40fps/inch. The 6.5x300 may exceed 40fps/inch, because of the even smaller bore diameter, but then again, the 6.5x300 is less efficient, and that may effect the results.
Now as you cut the barrel shorter and shorter, the difference per inch should grow, because the pressure is higher when the bullet is 20" down the barrel than it is when the bullet is 26" down the barrel. |
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Stay well. |
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I chrono'd some 180gr accubond factory loads last spring and was getting an average of 3257fps, 3278fps on the high end and 3231 on the lowest. The box listed the muzzle velocity at 3175fps. That was out of a 24" barrel. I did not chrono those loads out of one of my other 300 Bee's with a 26" barrel as I had just mounted a scope on the one I was shooting that day and cannot provide a measured difference for the OP with the same load. |
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However, that was a rare exception, most factory loads fall short of published velocities, often up to 100fps, sometimes up to 150fps or even more. And the same is true for many loads listed in loading manuals. |
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I haven't noticed any signs of over pressure but also have not measured the cases to be more accurate in that statement. The last time I bought factory nosler ammunition in this caliber was close to 4 years ago and it will be the last time for me unless the current pricing of this particular brand changes drastically.. |
Thanks for all the replies. Learned a few new things from the thread.
Im going to be ordering a cds dial for the scope on my 300 weatherby which has a 24 inch barrel. Probably best to hust fire through a chronograph. I was going to get my 300bee bead blasted back to a new finish To get rid of any safe kisses, and debated putting on a 26 inch barrel. |
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