For awhile I had a very hard time finding Fed-100 SPPs for my cowboy loads. Oddly, the Fed-200 SPP(magnum)s were plentiful on the shelves. So...I decided to buy some and do an experiment.
I have two (2) questions. The first is, "Does the same powder charge weight with the same bullet loaded to the same COAL give similar velocity by just swapping Fed-100 with Fed-200?" The second is, "Are Fed-200s as soft and easy to ignite as Fed-100s?"
Today, I tested question #1. I loaded three (3) different powder charges (0.7cc Trail Boss, 0.5cc Promo, and 5.6-gr Accurate #5) behind the same bullet (130-gr coated RNFP) using both normal and magnum Federal small pistol primers (Fed-100 & Fed-200). Results are as shown:
***CHRONY DATA***.38 Spl 130-gr Coated RNFP 1.443-1.454" COAL
Taurus 66 with 6" barrel
0.7cc (3.0-gr) Trail Boss powder Fed-100 - AVERAGE = 633
fps - ES = 22.0
0.7cc (3.0-gr) Trail Boss powder Fed-200 - AVERAGE = 644
fps - ES = 44.3
0.5cc (3.5-gr) Promo powder Fed-100 - AVERAGE = 793
fps - ES = 67.6
0.5cc (3.5-gr) Promo powder Fed-200 - AVERAGE = 797
fps - ES = 41.9
5.6-gr Accurate #5 powder Fed-100 - AVERAGE = 804
fps - ES = 47.4
5.6-gr Accurate #5 powder Fed-200 - AVERAGE = 818
fps - ES = 25.5
As you can see going from regular to magnum primer changed the velocity minimally. I'll try these in my cowboy guns next to answer question #2.
That Trail Boss load was nice and gentle.
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