What do they put in super X?

desporterizer

desporterizer

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What is it about this ammo that makes it shoot this good? Two 4rnd groups (I only had one box & had to make it last) out of Lithgow. I tried it at 200yrd & it opened up maybe another inch. Canadian 1944 milsurp shot at about 4 inches at 100. The tighter of the two was done barrel hot. Man I never shoot this good.
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amphetamines. That way as you shoot and inhale the vapours you slowly get that accuracy enhancing high known to the military. Hence your last group is better than the first.
 
"...What do they put in super X?..." Powders that reloaders can't get. None of the manufacturers advertise the powders they use or how much for this reason. That and they can change the powder at any time. They load to get a specific velocity range.
The Win SuperX uses a 180 grain SP. They don't give the diameter, but I think it's .311". No need to slug that barrel. Sierra makes a 174 grain .311" MatchKing. Plus several .311" Pro-Hunter bullets. A 180 grain SP included.
 
The bullet weight, burning rate of the powder and amount of powder controls how your barrel vibrates when the shot is fired. When the right combination of all three above is reached the bullet will leave the barrel at the exact same point of barrel movement making your group size smaller.

On the reverse of this varying or changing the amount of up pressure at the fore end tip of your stock will also change the barrel vibrations and this can be adjusted or tuned to make your group size smaller.

You either “tune” the ammo or “tune” the rifle to get tighter groups.

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By simply tightening up and shimming the draws area of my No.4 Enfield and increasing the up pressure my group size changed dramatically at 50 yards.

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Man, I hear ya on that, my '42 Maltby has never shot so well. Took 5 shots when I had a scope mounted for load testing as a benchmark. All shots went into under an inch and I quickly put the box aside for when I need that kind of accuracy hunting. My handloads have never ever come as close.
 
The “American” powders we knew in the old days are dead and gone the old Olin/Winchester Ball powders are made by another company in Florida. A large percentage of Remington/DuPont powders come from ADI in Australia which is owned by a French company.

Winchester Ball powder in now owned by General Dynamics and is made by St Marks Powder Company Florida.

These old Remington/Dupont powders below are made by General Dynamics in Canada and the rest are made in Australia.
http://www.hodgdon.com/PDF/MSDS Fil... Base_IMR-SR-PB/IMR Singles Base - Canada.pdf

Read the MSDS sheets below.

http://www.hodgdon.com/msds.html
 
Whatever it is, I like it. using the Winchester super x I get around 1" groups at 100y out of my 1944 "poor mans sniper" Long Branch I paid $80 for. The brass is good too.
 
Below is a photo of an Australian No.1 range rifle with custom bedding, the adjustment screws control the “tightness” of the draws area and also center the barrel in the barrel channel. The light colored shims above the copper blocks control the amount of up pressure at the fore end tip of the stock by pushing down at the rear of the stock.

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This is good news, as I just this week managed to buy 10 boxes of Super X at $16.95/box (cleaned the place out)...the best price I've seen in a while. :dancingbanana:
 
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