SPS Tac 20" BB Velocities

3814 Views 3 Replies 3 Participants Last post by Larry in SD, May 22, 2010

Winxp_Man

Discussion Starter · Apr 28, 2010

i just want to start this thread for people that have done velocity tests for 20" BB on SPS Tac's............

post what your velocity is with what round and what powder im trying to get some 20" barrel velocities for a Ballistic Calculator im using...

thanks for any input and info on this subject......

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BadKarma

· #2 · Apr 29, 2010

I've got a 175 SMK load that I will chronograph if and when it quits raining.
It's 44 grains of Varget and very accurate, I just don't know how fast it's moving yet.
It's averages 2689 out of my 26 inch sps varmint. The recent monsoon season has kept me
from getting the 20 inch results. It shoots really well in both rifles.
I will get back with you it that's a load/bullet weight your interested in.

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Winxp_Man

Discussion Starter · #3 · Apr 29, 2010

BadKarma said:
I've got a 175 SMK load that I will chronograph if and when it quits raining.
It's 44 grains of Varget and very accurate, I just don't know how fast it's moving yet.
It's averages 2689 out of my 26 inch sps varmint. The recent monsoon season has kept me
from getting the 20 inch results. It shoots really well in both rifles.
I will get back with you it that's a load/bullet weight your interested in.

i would appreciate it if you do post your 20" barrel results

and yes i will be with varget and some IMR 4064.... and 175 SMK for bullets

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Larry in SD

· #4 · May 22, 2010

Not a SPS Tactical, but I have a Remington Model 700 SPS .308 that I have had the 24" Barrel shortened and re-crowned at 20" (same length as the SPS Tactical). This past weekend I ran 5 Winchester 150gr. Power Points through this 20" .308. The results were:

.308 Winchester
20" Remington Model 700 SPS
150gr. Winchester Power Point
Super X Factory Ammo
Cartridge Case = Winchester
Primer = Winchester
Cartridge Overall Length = N/A
Date = 5-16-10
Temperature = 77 degrees
Velocity
1st Shot 2760
2nd Shot 2676
3rs Shot 2786
4th Shot 2743
5th Shot 2778
Average 2749
Spread 110
Deviation 12.49

I have been prepping Winchester Brass to load up some test loads. I have 150gr. & 165gr. Nosler Ballistic Tips, VARGET Powder and CCI-BR2 Primers. With a little luck I will get them shot next week, and will have some more chronograph data when I get my load(s).

I tested some more loads this afternoon. The velocities are as follows:

.308 Winchester
20" Remington Model 700 SPS
150gr. Nosler Ballistic Tip
46.5grs. Hodgdon Varget
Cartridge Case = Winchester
Primer = CCI-BR2
Cartridge Overall Length = 2.815"
(2.914" Touching the Lands)
Bullet Length = 1.213"
Date = 5-29-10
Velocity
1st Shot 2757
2nd Shot 2727
3rs Shot 2735
4th Shot 2716
5th Shot 2719
Average 2731
Spread 41
Deviation 7.81

.308 Winchester
20" Remington Model 700 SPS
165gr. Nosler Ballistic Tip
45.0grs. Hodgdon Varget
Cartridge Case = Winchester
Primer = CCI-BR2
Cartridge Overall Length = 2.820"
(2.914" Touching the Lands)
Bullet Length = 1.290"
Date = 5-29-10
Velocity
1st Shot 2602
2nd Shot 2604
3rs Shot 2599
4th Shot 2618
5th Shot 2607
Average 2606
Spread 19
Deviation 5.10

Larry

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