I no longer shoot shotguns frequently and I have 2-lb of Blue Dot I want to use up in my 9mm loads. I found a recipe some time ago but I cannot locate the source. All I have listed is
6.8gr – 1110fps – 27,300 CUP
7.6gr © -1189fps – 32,300 CUP (compressed load)
I loaded and fired 10 rounds with 6.8gr with CCI 400 small rifle primers,
X-treme 115gr RN bullets at 1.060” and I had no problems. I researched other sources because I noted that even 6.8gr produced a compressed load so I wanted to review the original data. Alliant, Hodgdon, and Hornady do not list Blue Dot at all with a 115gr bullet.
What I found makes me more uncertain because the recipes are much different.
Sierra 4th Ed. (1995)
With either their 115gr JHP @ 1.015” or FMJ @ 1.090” they list 6.0gr (1100fps) and 7.4gr (1400fps)
Speer #12 (1994)
With either their 115gr JHP @ 1.125” or TMJ @ 1.135” they list 7.7gr (1161fps) and 8.5gr (1258fps).
Even though the 6.8gr I used appears to be safe in either case as far as weight goes, my deeper seat may give much more pressure and velocity (but I have not graphed it). But there is no sign of primer deformation.
I would appreciate any thoughts and suggestions.
6.8gr – 1110fps – 27,300 CUP
7.6gr © -1189fps – 32,300 CUP (compressed load)
I loaded and fired 10 rounds with 6.8gr with CCI 400 small rifle primers,
X-treme 115gr RN bullets at 1.060” and I had no problems. I researched other sources because I noted that even 6.8gr produced a compressed load so I wanted to review the original data. Alliant, Hodgdon, and Hornady do not list Blue Dot at all with a 115gr bullet.
What I found makes me more uncertain because the recipes are much different.
Sierra 4th Ed. (1995)
With either their 115gr JHP @ 1.015” or FMJ @ 1.090” they list 6.0gr (1100fps) and 7.4gr (1400fps)
Speer #12 (1994)
With either their 115gr JHP @ 1.125” or TMJ @ 1.135” they list 7.7gr (1161fps) and 8.5gr (1258fps).
Even though the 6.8gr I used appears to be safe in either case as far as weight goes, my deeper seat may give much more pressure and velocity (but I have not graphed it). But there is no sign of primer deformation.
I would appreciate any thoughts and suggestions.