bronko22000

I was able to get out shooting today finally as I refuse to do any work on Sunday and it wasn't raining. Ed sent me a bunch of his 350 gr HP cast bullets a bit ago to try in my 1:30 twist Green Mountain .45 cal percussion barrel to see how they shoot. He is wondering what twist rate to get in a new barrel. I shot 3 groups of 5 shots each. (The 85 grain charge has 6 shots because I had called a pull.)
All shots were at 50 yards with open sights using a 1/8" felt wad below the bullet. Charges were 75, 85 and 95 gr of Goex FFFg and average velocity was 1248, 1307, and 1398 fps respectfully. Because of the oncoming rain I was firing pretty much as fast as I could load and swab between shots. With more time and a scoped rifle I believe the groups could even be better. But I am well pleased.
Group sizes were 2" (4 in 1.125") with 75 gr charge, 1.062" with 85 gr and 2" even for the 95 gr charge. I'm liking these bullets a lot. They are shooting right up there with my 370 gr paper patched bullets.

Semisane

I too love those bullets Bronko. Good shooting there buddy.

Jus curious here. I know you've had that barrel a while. How many rounds would you guess you've shot out of it at this point?

bronko22000

Van, not a whole bunch. Maybe only 100 or so. But it seems no matter what projectile I use I can find an accurate load for it some where between 70 - 90 gr of FFFg or Pyro P.
But I didn't notice until I took a shower later that evening but although the recoil was moderate at worst I was shooting in a T-shirt and the butt plate screw took a 1/2"x1" chunk off the first layer of skin on my shoulder.
PS: your tip on starting at 75 grs paid off for these bullets. Both 75 and 95 gr charges were slightly larger then the 85 gr charge.

Gm54-120

Im very fond of that bullet too. 70gr of BH209 by volume in an inline is a very comfortable load to shoot. Roughly the same speed as 90-95gr of Pyro P.

bronko22000

Well Just to double check I went out today just before the rain came to try my paper patched bullets out of my .45. I only fired 3 shots but that was enough to convince me that Mine shoot just as accurately as Ed's. Of the 3 shots fired 2 of them were touching with the second cutting half of the first and the third shot had about 1/4" separation. And this was without swabbing between shots.
The bullets are a 370 gr 11mm bullet (.446" dia) sized down to .443" and paper patched with linen paper bringing the dia up to .450". They are a slip fit barely touching the rifling but are accurate as all get out. I have to thank IdahoRon for getting me onto these. He sent me a couple to try and I was hooked.
Now this isn't to say Ed's 350 gr bullets are inferior to mine. I wouldn't hesitate for a minute to use his over mine. Both bullets hit the same elevation but his shoot slightly right of bull and mine slightly left.
Edit: distance was 50 yards.