Federal is Launching 6.5 Creedmoor + Peak Ammunition - 80,000 PSI !
- Thread starter UpNorthMI
- Start date
Been there. Handloads. Speciality brass. PRC loads in a CM. Whoop de doo. Lots of care and a bit of stupidity.
Went back to a 120gr at 3000fps. A bit extra steam from the Saami++ loads but so what? As the old teuchter stalker said ‘maist o’ it gauns in the heather’
No free lunch and I preferred the full loaded CM with low recoil to the barking pseudo PRC. Pays your money…
Went back to a 120gr at 3000fps. A bit extra steam from the Saami++ loads but so what? As the old teuchter stalker said ‘maist o’ it gauns in the heather’
No free lunch and I preferred the full loaded CM with low recoil to the barking pseudo PRC. Pays your money…
timbrayford
Well-Known Member
What influence will high pressure loads have on felt recoil and noise?
It’s a linear relationship. More powder equals more pressure which equals more recoil. A typical 6.5 PRC round using 120grain bullets will produce 14-16 joules of recoil energy, according to Gordon’s Reloading Tool, while a ‘fast’ load (<3000fps) will be be upwards of 17 joules. As for noise, it’s hard to say: loud is loud!
Smellydog
Well-Known Member
PARDON?
So I thought I'd run a few numbers through Gordons Reloading Tool to see what the additional recoil would be from a charge generating 80,000 psi. Given the performance comparison with a 6.5 PRC I thoguht i'd run the numbers to see how the recoil compared and what an 80,000 psi charge in 6.5 PRC would look like. I then wondered how the CM + Peak would compare with a larger calibre such as 300 PRC. Here's the numbers.
The "starting load" and max load" charges are taken from the Vihtavuori reloading tool while the "over charge" load reflects the volume of powder required to generate a max pressure of 65,000 psi and the "+ Peak" load is the powder required to create a max pressure of 80,000 psi (or thereabouts). These figures assume a rifle with a 24 inch barrel weighing 5400 grams.
If one of the appeals of a 6.5 CM is the low recoil, why get so excited about the + Peak?
The "starting load" and max load" charges are taken from the Vihtavuori reloading tool while the "over charge" load reflects the volume of powder required to generate a max pressure of 65,000 psi and the "+ Peak" load is the powder required to create a max pressure of 80,000 psi (or thereabouts). These figures assume a rifle with a 24 inch barrel weighing 5400 grams.
| Hornady ELD - X 143 grain | Hornady ELD-X 212 grain | |||||
| Vihtavouri N560 | Vihtavouri N560 | |||||
| 6.5 Creedmoor | 6.5 PRC | .300 PRC | ||||
| Max load | 6.5 CM "+ Peak" | Max load | Over charge | "+ Peak" | Starting load | |
| Powder charge (grains) | 44.9 | 51.45 | 55.4 | 58 | 61.62 | 64 |
| Muzzle velocity (fps) | 2674.2 | 3101 | 2905 | 3047.6 | 3235.4 | 2312.1 |
| Max pressure (psi) | 48,260 | 80,013 | 55,828 | 65,009 | 80,009 | 34,321 |
| Recoil (ft-ib) | 9 | 13 | 12 | 14 | 16 | 15 |
| Load ratio (%) | 100.1 | 114.7 | 94.4 | 98.8 | 105 | 80.7 |
If one of the appeals of a 6.5 CM is the low recoil, why get so excited about the + Peak?
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tackb
Well-Known Member
data is missing mate
Sorted. Had to re-type it as wouldn't copy from excel.
A 6.5 Backcountry, in effect.
It says 6.5x55SE on the barrel of my SAKO 75, not SKAN
harrygrey382
Well-Known Member
Or - as they’re calling the 7mm - 6.5mm Brokeback
I mean the elephant in the room is - if you want more velocity, why not just use a bigger cartridge?
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