tss/steel duplex load data?
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Apex is 1oz steel 2’s under 0.25oz of tss 9’s in a tps wad and 3” euro/Cheddite hull/primer.
You can make a similar load with 0.75oz steel and 0.30 oz of tss or more fit in a csd100 wad using steel load data (33grain of steel powder, Longshot is an option as well.).
You can make a similar load with 0.75oz steel and 0.30 oz of tss or more fit in a csd100 wad using steel load data (33grain of steel powder, Longshot is an option as well.).
i was unsure if changing some of the steel to TSS would change the pressure within the shell when using a steel recipe. you guys say no though? just use a steel recipe and replace however much i want with TSS?
would make sense with more space in the shell after replacing some steel with TSS. New to reloading, lots to learn.
Maybe, the tss is harder than steel, so in actuality, pressure should go up .
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From all the TSS duplexing that I've done....pressure decreases or stays the same when loaded with equivalent steel data.
Thanks, never tested so I will defer, I appreciate it!
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To get the desired speed, and im sure it has the filler was to make the load "full".
Removing 1/4oz of steel and adding 1/4oz of heavier shot and nothing else will always have lower pressures. Going the other way raises pressure because you are increasing the volume of shot.
In Tom Rosters 2019 hevi-shot supplement, he said that going from 12 to 13 cc requires a 10% powder drop. He said, the harder the shot, the higher the pressure ( I believe, I am out driving). The impact of the initial pressure into a harder substance should increase the initial pressure. He said buffer would further increase pressure, but filler, ie felt, cork, ect made no difference. Not saying you are wrong, just there is information out that would suggest otherwise.
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Again, that is making a FULL LOAD. If you take 1/4oz steel shot out and put 1/4oz tss in, it will have less pressure because there will be extra space in the load.
If you take a 12g/cc 1 1/4 load and instead put 1 1/4 of 13, 15, or 18 in its place, with no other fillers, the pressure will be lower. If you fill the hull, using a filler wad, the pressures could go up.. if you put 1 1/4 of 15 or 18 in a 1 1/4 12g recipe, it probably wouldnt even burn correctly. There will be such a gap that i bet it squibs.
OK, I was under the impression that he wanted to crimp the shell and would put a filler cushion in there to do so. I only have loaded for 89 different pistol, rifle, and shotgun cartridges, along with owning a commercial reloading business at one time. First off, pressure in shotguns really only matters at the muzzle end for the most part. 2nd, the hardness of the shot is a determining factor as to pressure on the breach end and muzzle end of the gun. 3rd, volume is not that critical in shotshells. Ie, I have seen aa 28 hs hulls w 1/4" difference in hight. I have asked manufacturers, and the constant reply is be careful of crimping too deep on the taller ones, but otherwise, no difference. Thoughts?
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You can roll crimp any fold crimp data according to BPI. Duck load? You could load a real nice 1300-1375 1oz load with a-steel, I loaded a slightly slower one for doves last year for a buddy using #6 shot and he took a few early teal with it as well. Load it with 3/4oz steel 3's or 4's and cut it with 1/4oz of 9s or 10s and I bet you it would be killer. It was a really light shooting load and patterned well for him with a LM carlsons in a SX4.
My load was
Rem unibody, ched 2000, 26gr a-steel, TUWGL12 wad, 1oz of steel. Chronod at 1320
There is a lot of data for that wad in different hulls and different powders. Longshot, steel, 800x, blue dot, and hs6. Federal GM, rem yellow bw, cheddite, and fio have recipes for more speed obviously (up to 1475).
If you are looking for a goose load, I would hop over to the lightning steel manual and find a 7/8 or 1oz load there to use. Up it to 1500-1600fps and toss 3/4oz of 1s over 1/4 of 8s maybe?
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When I had some Federal 3-1/2" 1-7/8 oz of TSS #2 shot loads tested, a few of the pressures were scary low. I put some soft felt filler wads under the TSS shot to get the 1-7/8 oz TSS loads to crimp and that really lowered the pressure. A few of the test loads were just over 1,000 psi and the highest pressure was just over 4,000 psi.
So using the Federal 3-1/2" 1-7/8 oz 15g/cc Heavyweight wads and powder charge I should have used hard card wads under the shot. Adding soft wads under the shot and using denser shot that has a shorter shot column really lowers the pressure more than I thought it would.
I ended up loading 2-1/8 oz of TSS #2 shot in the hulls that came with 1-7/8 oz of 15g/cc shot in them and used hard nitro card wads under the 18g/cc shot to get the crimp right.
All of the testing I have done the pressure goes down when using denser shot. If you have to use filler wads under the shot I wouldn't put more than 1/8" of cork or felt wads under the shot. If you have to use more filler wads under the shot use hard nitro card wads to take up that space. If the data you are using shows 1/4" or 3/8" of soft filler wads and you need more filler wads use hard card wads on top of the soft wads under the shot.
Using 15g/cc shot in 12g/cc shot load data and adding 1/4" of soft cork or felt wad under the 15g/cc shot lowers the pressure of the load quite a bit.
I can send you a link with 3 test load data sheets for 12g/cc and 15g/cc loads if any of you want to look at them. Send me your e-mail address in a Private Message and I will send you the data. The first load was a old BPI 12g/cc 1-1/2 oz load that was WAY OVER MAX pressure until I lowered the Steel powder down to 29.5 gr from 35.0 gr.
BBK, yes on the duck loads, I scored a bunch of various HTL goose loads cheap a while back, have a pile of it!
May look into it for next year, the turkey loads I use are lil gun in Fiocchi hulls csd20 wads, so I may look for something I can utilize the stuff I have on hand preferably.
May look into it for next year, the turkey loads I use are lil gun in Fiocchi hulls csd20 wads, so I may look for something I can utilize the stuff I have on hand preferably.
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