AmericanLongRifles Forums

General discussion => Black Powder Shooting => Topic started by: frenchman on March 25, 2021, 02:39:36 AM

Title: Cerrosafe and measurements
Post by: frenchman on March 25, 2021, 02:39:36 AM

 Just did the imprint, works perfectly, very happy will be doing all of them soon.
Here is the question.
The bore dead on .540
Groves .568-.569
Ball .530
I usually use .018 patches with my other .54
But here i have a big difference can’t use a .030 patch it would be much to tight, will the .018 patche still cover enough of the gazes.
(https://i.ibb.co/0yFDVw5/FFB076-A1-ACC0-47-A1-810-C-DE798357-D20-B.jpg) (https://ibb.co/7tRYN9h)

Title: Re: Cerrosafe and measurements
Post by: Daryl on March 25, 2021, 10:30:09 PM

Hi Denis - if you use the components at hand, you barely go to the bottom of the grooves with very little compression.
If you went to a .535" ball, the fit will be better.
I personally would be using a .021" denim (10 ounce) with a .535" ball in a flat bottomed rifled barrel.
Your round grooves are 4 to 5 thou deeper than that, which is common for a Rice bl. & should be using a thicker patch.