Ok here is the Run down today: Temp 19 F
Rifle;s Used CVA Optima V2 .50 cal Bullets FED BORELOCK 270 trophy copper, Hornady XTP 240 Grn Sabot, T/C Shockwave 250 GRN,
CVA Accura MR-X .45 Cal Bullets T/c Shockwave .200. Hornady XTP ,400 155 grn harvester Blue sabot
All powder charges were loose powder by volume. For the .50 cal 100 grns of T7 FFg, Pyrodex RS, Swiss 2 FG, SWBP
.45 cal 80 grns of T7 FFg, Pyrodex RS, SWBP
Chrono Graph was very Cold and I would take in the truck and warm it up between sets. Here is what I learned.
The Swiss was very dirty and required swabbing after the second shots. Love that smell
The T7 got very hard to load in both rifles after the second shot and had a crud ring using Cheddite Priners. When I used the Winchester BP Primers the crud ring was a little better but the fouling was still tight.
Pyrodex RS did foul but minimal Crud ring and I could load all three rounds with force.
SWBP No Crud ring and I could load all Three shots with ease. The Smoke produced with SWBP was similar to Pyrodex but smelled completely different. SWBP Stinks,
Average Speeds ,50 cal first Fed Borelocks 1741 DIV 180 Hornady 240 Grn XTP Grn Sabot 1803 DIV 87 T/C Shockwave 250 GRN 1851 Div 77 T7
1707 DIV 113 1753 DIV 83 1790 Div 58 SWBP
1751 Div 156 1791 DIV 67 1764 Div 84 PYRO
.45 CAL T/C Shockwave 200 Grn 1907 DIV 72 Hornady XTP Harvester BLU 1973 Div 66 T7
1803 DIV 89 1858 Div 105 Pyrodex
1823 DIV 55 1880 Div 48 SWBP
So what did I learn, Well, all bullet and rifles shot well. I did not shoot paper today and will redo this test for grouping on a warmer day. Div might have been more consistent if I would have taken my time and applied the same loading pressure. The BORELOCKS do not really fit my Optima bore well so I would not use this bullet. However I was able to ring steel all day with all shots at 100 yrds It was to cold to run up and down the range to change out paper. I wanted to see how these rifles loaded and fouled with different powders. I will say the crud ring was very noticeable with T7. Do I think there is winner. Well if you want FPS T7 took that title. If want to shoot all day with minimal fouling. SWBP won that. If you don't want a stinky powder SWBP is not your choice. So terminal performance is calculated with many factors and velocity is one of them If that is the Case T7 performed best in that area. As for cleaning and cost per shot and ease of Loading SWBP got the win there. In a hunting scenario we may only fire our weapons once or twice max. Lots to think about. Again this was not scientific it was cold and stiff out there this morning. It was fun just to shoot. So there are some numbers and items for you. As for shooting Swiss in the MRX I will never do that so I did not try it. It was fun just shooting today, Now the cleaning begins
Have a good weekend. Be safe