Top Ten Most Efficient
1. 6.5 Creedmoor 140gr 82.0 ft lbs of energy per ft lb of recoil
2. 7mm-08 160gr 75.4 (140gr 70.7)
3. 6.5x55 140gr 75.0
4. 308 Win 165gr 73.6 (150gr 65.7, 180gr 73.0)
5. 243 Win 90gr 68.5
6. 338 Federal 200gr 68.0
7. 22 Creedmoor 70gr 67.5
8. 6.5 PRC 140gr 66.7
9. 30-06 200gr 66.3 (150gr 55.0, 165gr 62.1, 180gr 63.2)
10. 338-06 250gr 65.0 (225gr 64.1)
Top Ten Least Efficient
1.375 Ruger 300gr 45.7
2. 8mm Rem Mag 200gr 46.3
3. 300 Ultra Mag 200gr 46.9
4. 300 PRC 200gr 48.4
5. 338 Ultra Mag 250gr 48.9
6. 300 Win Mag 165gr 49.1
7. 28 Nosler 160gr 50.5
8. 26 Nosler 140gr 52.5
9. 257 Weatherby 110gr 53.0
1. 325 WSM 200gr 53.2
I was hoping the thread subject would be a relationship of energy at say 100 yards, and 500 yards in contrast to burnt powder. Efficiency to felt recoil is so subjective, where as ft/lbs of energy per grain of powder is not.
Im actually quite surprised that the subject is based on felt recoil. Its like saying the fastest car is the one with the most comfortable seats or something.
Thanks ........ Interesting results. Would have liked to see how the 22-250 and 223 fit in that list with the 22CM.
The OP lists some powder burned rates in post #125 which show that powder burned is useless as the majority is burned up in 20” of barrel. In my previous post I show that a 300 Win mag gets roughly a 15% advantage in velocity @ 400 yards from roughly 75% more powder and 100% more recoil vs a 308 which in the context of this thread puts the efficiency into perspective quite well for most hunting applications. Now, if I was going to the Yukon to hunt moose I’d probably be taking my 300 Weatherby, they have their place but this thread is simply looking at the most bang for your buck so to speak.
Thanks for elaborating, Im actually confused more by the choice of terminology.. This seems like more of the same but I'll leave it alone, or maybe build my own statistics.
300WM would be a fine choice for yukon moose I'm sure, as would 30-06 arguably but the weatherby more fun.
Since this is all about recoil, why even have a .22 centerfire on the list at all?
"Oh, your hunting moose? Well the .22 Creedmoor is two spots higher on the recoil efficiency list than the .30-06, so you should probably go with that... especially with Creedmoor in it's name, as it will field dress, cut & wrap the meat and take your trophy photos before it hits the ground..."
Yes, I double checked and for some reason it was listing the B.C. differently for the same bullet, changed it to 180 federal TBT’s @ .5 B.C. it came to: 308: 2620 MV and 1960 @ 400. 300 WM: 2960 MV and 2250 @ 400 so yes about a 15% advantage from approximately 75% more powder and 100% more recoil
It is about recoil, The energy to recoil ratio. So with this in mind, less recoil is better to a point.Since this is all about recoil, why even have a .22 centerfire on the list at all?
Which would matter, I guess, if recoil in well stocked .30 caliber rifle mattered; it doesn't.
One last topic hijack,
Fellas, if I were to create a broader table for energy and efficient comparison, could anyone help with estimating powder grain weights for a chart? Just guess on the easy ones and fill in what you can.
If your interested and have a little free time PM me your email and I'll send you a list in whatever format works (email text, word, excel, etc). I'll make the excel file available to the forum after for anyone.
Someone should invent a device that attaches to the rifle which reduces felt recoil. I bet they would have an entire industry devoted to building and installing these devices.
Yeah; one that makes it quieter at the same time.
Thermarest mattress?