300magman said:
As long as you can still shoot a slightly larger rifle equally well, I would not recomment a 5.56 or 6mm or perhaps even 6.5mm rifle for deer. (though I know they can be used effectively I believe moderate 7mms and 30s have an advantage)
Emphasis mine.
Really?!?! I will readily concede the fact that you are somewhat limited with the .223 & .243, and that 7mm's and .30's have a distinct advantage against them in some areas...
But the 6.5mm being too small for deer???? My .260 is devastating on deer and hogs and when I get a chance for caribou and black bear, that .260 will be in my hand without hesitation.
The differences between the 6.5mm & 7mm's is so small, the only real deciding factor is shooter preference.
Please tell me what advantage the .30 cal's have over the 6.5mm's... I'm dying to hear them, but I already know much of what you'll say, so I'll counter your arguments now...
1. The 6.5mm's are too light for deer.
Shenannigins.... There are plenty of people on this board that advocate 140gr (even 130gr) loads for .270 Win rifles... My .260 shoots 140gr bullets just fine and they hit deer like Thor's hammer.
2. The 6.5mm's don't have enough energy down-range.
Comparing cartridges with identical casings: .260 Rem vs. .308 Win
.308 Winchester
Load: 165gr Sierra GameKing @ 2840fps muzzle velocity
Muzzle Energy: 2686 ft/lb.
350yd Energy: 1424 ft/lb.
.260 Remington
Load: 140gr Nosler Partition @ 2725fps muzzle velocity
Muzzle Energy: 2308 ft/lb.
350yd Energy: 1395 ft/lb.
Man,
29 ft/lb. of energy at 350yds... The .308 clearly has the serious advantage here....
3. The .30's buck the wind better.
Wrong. Just plain wrong... Using the same loads as above, here they are head-to-head with a 10mph @ 90 degrees. Range: 350yds.
.308 Win: 11.2" of wind drift.
.260 Rem: 9.17" of wind drift.
4. The .30's will penetrate more because they're heavier.
Using the premise that the 6.5mm cartridges in question have sufficient velocity (I belive that has been established), the other factor to penetration is sectional density. Here's a break-down of .264" vs. .308"...
Sectional Density
6.5mm/.264"
140gr: .287
.308"
140gr: .211
165gr: .248
180gr: .271
190gr: .286
200gr: .301
Hmmmmm..... Seems like a 140gr 6.5mm has better sectional density than a 190gr .308" projectile... It takes a 200gr .308" to better the 6.5mm 140gr in the SD department...
No, you won't find 6.5x47, 6.5x55 Swede, .260 Rem, or 6.5 Creedmoor ammo on every shelf of every gun shop in america like you will with the .308 Win, .30/06, or .300 Win Mag. However, there are plenty of loads available to those who see and appreciate the true value of these "Puny" "little" 6.5mm's... It sounds like you don't, given your apparent affection for .300 Magnums... However the 6.5mm cartridges are PLENTY for deer and have been the mainstay of
moose hunting rifles in Eurpoe for decades...