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can mean mortally wounding and losing the animal.
If extreme accuracy is required you can increase the ball diameter, or better yet, the patch thickness, as a thicker patch holds more lube. However, the tighter the fit of the ball and patch in the bore, the more difficulty you'll encounter in seating the ball into the muzzle. For me, I'm rather lazy and I like to keep things simple and would sacrifice an inch of accuracy at 100 yards for the convenience of loading a quick follow up shot without any extra gadgets - like a short starter. But that's just me.
The question frequently comes up as to how small a ball will still work. In my own experience in building and testing Forsyth rifles of various large calibers, I have determined that the smallest diameter ball that will still provide the advantages of Forsyth rifling is .58 calibre. At 270 grains, the round ball has just enough weight and mass to travel straight and true at high velocity with as little spin as 1 turn in 100 inches of rifling twist.
Genuine Forsyth Rifling shoots very flat to 120 yards.
The idea of that one shot kill - dead in its tracks - is very important if you plan to serve that animal at the table. There is nothing worse (in my humble opinion) than adrenaline-soaked meat. Unfortunately, I haven’t yet found any German venison gravy or French sauce recipe that will effectively mask a seriously funked piece of venison.
I told him that I wanted a .620" bore, .630" across the grooves, 8 lands at 1:5 ratio with a twist of 144 inches.
After a bit of collaboration on the specs, he agreed to make a prototype barrel for me. My resulting Zephyr performed EXACTLY as Forsyth and Hal said it would – flat shooting, hard hitting, yet mild of recoil, easy loading, easy cleaning, and accurate!
Due to the very slow twist of a properly made Forsyth barrel, there is very little fouling of the bore – hence, easy clean up. And because of the very narrow lands, loading a proper-size ball and patch is easily accomplished with thumb pressure alone; then seated on the powder with an easy stroke of the loading rod. No short starter or any other gadgets needed.
No magic, just simple science and good engineering. Eventually we quickened the twist to 1:104" to accommodate less than full power loads with greater accuracy and went on to successfully make underhammer Forsyth rifles of .58, (24-bore), .62, (20-bore), .72 (12-bore) and .82 (8-bore) which covered the full spectrum of hunting needs for anything on the planet. The rest, as they say, is history.
than any other rifles in the world.
How about a Forsyth shot gun?
PS: Turkey Ranger Wads - Since first publishing this post I have had several inquiries regarding the turkey ranger wads mentioned above and where they can be purchased. The technical name is: DST-20 wad and they are available from Ballistic Products - www.ballisticproducts.com/CSD-20ga-Steel-wad-UNslit-250_bag/productinfo/0207020/
Additional information on Genuine Forsyth Rifling can be found at: http://rjrenner.blogspot.com/p/forsyth-rifling.html.