Any slug data for the 12 ga. Sabot with a .300 Gr. .50 Cal. Hornady FTX

[Brian M]

I have been reloading for quite some time and I am now just getting into reloading sabot type slugs. The cost of these things off the shelf is around 16 bucks for 5 at Cabella's in my area.
I would like to find some load data for a .300 gr .50 cal slug with sabot. The total weight with the sabot and all the ejecta that I plan to use is around 410 grains.
I see that the slug Hornady makes is a .300 gr SST FTX bullet with 42 grains of an unknown powder.
Does anyone know what type or what a comparable powder substitute would be?
Can anyone share their reloading slug expertise with me.?
The powders I have on hand are: Titegroup, AA 1680, H335, Unique, Clays, lil Gun, and some Herco. I know that some of these are rifle powders, but I mentioned them anyways.
Bullet: .50cal. 300 grn Hornady FXT
Hulls: Rio, Fiocchi, federal, Remington SST, Winchester AA, Herters, nd a few otherrs.
I have BPI SST .50 cal>12ga. sabots.
Primers are Winchester 209 and federal 209s.
I also have a Crony. I will be shooting from a Remington 11-87 rifled bbl.
I just want to see if anyone has anything solid for data on these before I start to work up a load.
Thinking about starting out with 22 Grns Of Herco AND another load of 22 Grns OF Clays and go from there. Not real sure how a slower powder like lil' Gun would work in an application such as this...
Any info or help would be greatly appreciated!
Safety First!
Please and Thank You!

 

[PapaG]

contact the powder manufacturers and also BP who make sabots, slugs and have much slug loading data.
Shotguns are relatively low pressure firearms and the wrong data can cause pressures to skyrocket.
I load Lyman "sabot" slugs for both 12 and 20 using plastic one piece wads and get accuracy similar to my more expensive SST, BRI, and other 15 buck/5 slugs. I think I figured out my load costs at something like 1$/5 using once fired hulls and slugs I cast from reclaimed lead.
Using new cases without skiving so I can roll crimp about doubles the cost. Still cheap.

 

[Brian M]

Thanks for your reply. Yes, I have also been considering Lyman slugs, the Pellet like ones that use one piece wads as a sabot. Does anyone sell them at a reasonable price, don't really want to purchase a mold.
Thnaks

 

[PapaG]

Bought my first ones off Ebay as a package with hulls, wads and slugs. Worked so well I bought a 12 ga mold and my nephew liked them enough he bought me a 20. Now I can do both. Seem to work best, against recommendations, by using unskived hulls (from Midwayusa) and roll crimping.
My son's 500 cantilever 20 likes them cast hard, mine likes them soft. Go figure.