Just got a GR .45 barrel 7/8 x 42 1-66 twist. If’n you own this barrel where have you found your best loads. I expect to have it ready for smoke around 1 February
I have a .40 with a Douglas barrel 13/16" x 42", 1/66 twist. It shoots very accurately with patched round ball using charges of 3F from 30 grains to 70 grains. I have checked it using 30, 35, 40, 55, 60, 65, 67 and 70 grains, no problem with any of them.Just got a GR .45 barrel 7/8 x 42 1-66 twist. If’n you own this barrel where have you found your best loads.
I built a rifle with that exact barrel. I normally shoot 52 grains of FFF and a .445 ball for a target load. Shoots into one hole @25 yds.Just got a GR .45 barrel 7/8 x 42 1-66 twist. If’n you own this barrel where have you found your best loads. I expect to have it ready for smoke around 1 February
"Green River barrel" with what I think was a 1-60" barrel..., with a long conical bullet(which passed the bullet weight law required), and that ol' gun, drilled the center of the target shot after shot. Remember this, by all rights, is a round ball twist barrel.
We know arrows were fleched before the start of civilization. However I read an explanation once on how rifeling was invented. Groves were cut to catch fouling. By putting a twist in in the groves groves got longer then the bore, collected more fouling... but whoops the gun shot better.It wasn't just "shallow" grooves. It was also when the grooves were hand cut and thus the lands were much wider. Today for the most part the lands and grooves at the level of the grooves are equal width. In a hand cut barrel, often the cutter was thin compared to the lands, AND because of the cutter shaft often being wooden, a land was opposite of the groove.
Here is a modern barrel with 8 equal lands and grooves compared to the antique 7-grooved barrel with lands 3x as wide as the grooves.
View attachment 22215
LD
We know arrows were fleched before the start of civilization. However I read an explanation once on how rifeling was invented. Groves were cut to catch fouling. By putting a twist in in the groves groves got longer then the bore, collected more fouling... but whoops the gun shot better.
I never bought that, but....
How many of us are really shooting these shallow groove rifle barrels? For the most part, unless you've got an Italian gun, or some rather odd old barrel, I'd say that "we" are generally shooting barrels with deeper grooves, both round and square.
They noticed when throwing a rock that when they put a bit of spin on it, it went father and was more likely to reach (and hit) the "person" (note quotes) or other critter they were throwing the rock at?Somebody figured out they wanted to impart a twist on the ball (imho) …, how they got the idea is indeed a mystery...
As is how that knowledge spread across oceans to every continent and culture on this rock that used the bow. (which is all of them.)
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