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Current pistols in the vault to try 500 "Ultra"
Posted: Fri Dec 11, 2015 7:04 pm
by BLACKBEAR
Currently no big "flop" guns.
243AI on a Nesika midgrip, 15" 8 twist barrel, 2.5x8 Leupold
6.5 Grendel, Bat action, Dell trigger, 2.5x8 Leupold
6.5 TCU XP100, Bomars, Dell trigger, ugly stock
25BR XP100, Bomars, Dell trigger, muzzel brake
Let the loading and testing begin in Utah's west desert.
Bill
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Fri Dec 11, 2015 7:18 pm
by Hosspower
Looks like a good list of iron to play with.
My brother and were wondering if a 6.5 tcu would be 'enough'. We would really like to give ours a try in unlimited standing. If we are fortunate enough to hit a ram we want to see it fall.
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Fri Dec 11, 2015 8:30 pm
by dhagerty40x
most of those will work with heavy bullets.
The 6.5TCU will be marginal but will work as long as you use 140+ Grain bullets and have a 1:8 twist barrel. any slower twist cannot stabilize the big 6.5mm bullets.
the 243ai even though has plenty of power, may ring Ram because of the bullet weights. I have use a 6BR on them, but I did ring a couple of rams.
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Sat Dec 12, 2015 8:02 am
by IKE
Shooting BB UAS (scoped) I've never rang a target with the below load in my 14" Contender and it has accounted for a few 40's.
I aim dead center on the chickens and pigs.......breast or rear end on the turkeys (not center).......chest or rump on the rams (not center).
Remington fire formed .223 brass.....Remington 7 1/2 BR primers.....Remington 120 gr PSPCL bullet.....20.9 grs of IMR4198.
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Sat Dec 12, 2015 12:00 pm
by braud357
IKE wrote:Shooting BB UAS (scoped) I've never rang a target with the below load in my 14" Contender and it has accounted for a few 40's.
I aim dead center on the chickens and pigs.......breast or rear end on the turkeys (not center).......chest or rump on the rams (not center).
Remington fire formed .223 brass.....Remington 7 1/2 BR primers.....Remington 120 gr PSPCL bullet.....20.9 grs of IMR4198.
Ike - they are talking about 500 meter rams
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Sat Dec 12, 2015 5:04 pm
by Hosspower
Current 6.5tcu load is a Hornady 140 sst with 21.5gr H322.
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Sat Dec 12, 2015 6:23 pm
by dhagerty40x
Hosspower wrote:Current 6.5tcu load is a Hornady 140 sst with 21.5gr H322.
That might work. ;)
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Sat Dec 12, 2015 7:35 pm
by IKE
Ike - they are talking about 500 meter rams[/quote]
Oops.....In that case kindly disregard my above reply.
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Sun Dec 13, 2015 8:35 am
by borregos
[quote=
If all the rams don't go down who cares! It will just be fun shooting it![/quote]
+1
Re: Current pistols in the vault to try 500 "Ultra"
Posted: Sun Dec 13, 2015 11:59 am
by dhagerty40x
ok guys, I did some checks...
Hosspower: your 6.5Tcu load(based on rough estimates) would have a Momemtum factor of .71. I am estimating a muzzle velocity of 1700 Fps
Craig: Your 6ppc load showed up at a momentum factor of .90.
even at a muzzle velocity of 2200 fps, it met the .78 factor ;)
I checked my 7BR load for my wichita which is a Hornady 154 SST at 2019 fps. It has a momentum factor of .91
Hornady has a balistics calculator online that works very well (along it is free). you can find it here:
http://www.hornady.com/ballistics-resou ... calculator
The Sierra Xfinity program is supposed to be the best on the market, but you have to buy it.