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GM54-120 and myself had a bit of a difference of opinion on whether to swab or not to swab using BH209. Also a difference of opinion with accuracy. So today was beautiful, 35* sunny and no wind so I decided to do a bit of shooting on my own with my 700ML. Load was 75gr by weight of BH209 (100 gr volume) and a Barnes 250 gr Expander MZ in a Harvester black CR sabot. Now keep in mind my rifle was not sighted in with BH209 but with Alliant Black MZ. I get much better accuracy by better than half with the Black MZ. Considering that's a 6" target without measuring, both those groups are in the neighborhood of 3" Pretty ugly when you're used to 1" - 1 1/5" groups. Below are the two targets. One without swabbing (one primer shot for fouling) and the other with swabbing.
Apparently based on this limited testing there is no difference between either target with maybe a very very slight edge for swabbing - nothing significant.
Apparently based on this limited testing there is no difference between either target with maybe a very very slight edge for swabbing - nothing significant.
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