https://www.beartoothbullets.com/tips/archive_tips.htm/25
The .22lr SGB ammunition from CCI and the Silhouette ammo from Winchester were phenomenal when compared to conventional round nose bullets.
The meplat made all the difference, but the Silhouette anmo is long gone, and the SGB’s are hard to find if they are still in production.
What does the .22 user do who wants to bump up the effectiveness of their cheap round nose ammo?
Cut or file a flat on the front. Kids did this for decades by hand, but how to do it so the ammo is all the same? Make a tool or jig.
I have made several by using the directions above, slightly changing them for my use, but this is probably the easiest and cheapest modification that one can do that is truly noticeable.
I sat down at the mill one day and made a 50 round version, where I can file an entire box at the same time.
Highly recommended to anyone with a .22 who goes after game.