A couple of weeks ago I've started playing with the BACO 500gr Creedmoor paper patched bullet. My rifle really likes the .444" BACO Money bullet but is inconsistent with the lighter Creedmoor bullet. I happened to recover a few bullets from the berm behind my target and I can see what is going on and why I get flyers.
I thought some of you might find these interesting.
You can see a little bit of gas cutting at the edge of one land on this bullet.
This bullet fared far worse. It was the only one with really bad gas cutting. About half of the circumference of bullet had deep cuts.
Most of the bullets looked like this, no gas cutting, but bigger fins than I expected.
The rifle and load details are:
1874 C. Sharps in .45-70 with Dan Theodore's paper patch chamber (.474" neck with 0.300" cylindrical section, 25 degree taper from case mouth into rifling).
Winchester Large Rifle Primer, over primer wad.
82gr Goex FFFg Express
0.030" Veg wad
0.060" LDPE wad
500gr BACO Creedmoor, .444", 20:1, wet patched with 8lb Seth Cole, seated 0.125" into case mouth.
I'm running out of FFg Express so decided to try some FFFg Express and it looks like I've run past the limit of my wad stack. This wad setup works very well with the heavier BACO Money bullet and 82gr FFg Express in this rifle. I think I'll back down to a case full of Fg and/or try some of the rubberized cellulose wad material I bought. This bullet might like a softer alloy too maybe.
EDIT: I should add that I've played with this bullet briefly a year or so ago with slightly better results using FFg Express.