Went back to the range today, with advice from this forum and some changes to my setup.
I switched primers from Winchester209 to Federal209A.
I adjusted headspace to .012". Interesting that i could not cock the trigger with Winchester209 in place, but could cock the trigger with the Federal 209A in place. Eyeballing the 2 primers (with 61-year-old eyes
) it seemed that the Federal201A is a bit shorter.
Used 100gr BH209, Hornady 250 SST bullets, Federal209A primers, a target at 100 yards.
First 3-shot group was 2 1/2" on centres. No cleaning between shots (dirty barrel, dirty flash channel)
Second 3-shot group was 2 1/2" on centres. No cleaning between shots (dirty barrel, dirty flash chamber)
NOT happy with these groupings - i have shot better with this gun.Then I stopped, cleaned everything, ready for a new start.
I used the #32bit to clean out the flash channel, used a needle to clean the flash hole, and dry swabbed the barrel
First 3-shot group was 1 1/2" on centres. Between each shot , I used the #32bit to clean out the flash channel, used a needle to clean the flash hole, and dry swabbed the barrel (clean barrel, clean flash chamber)
Second 3-shot group was 1" on centres. Between each shot , I used the #32bit to clean out the flash channel, used a needle to clean the flash hole, and dry swabbed the barrel (clean barrel, clean flash chamber)So I'm thinking...
- the Federal209A primers are an improvement over the Winchester209 as I had no "no ignition" problems today.
- the headspace adjustment makes sense.
- my prior setup WITHOUT the headspace adjustment and using Winchester209 left very little soot. However, with the headspace adjustment done and using the Federal209A, the areas around the primer and firing pin were covered with a black soot. Unclear to me if the Federal209A is dirtier than the Winchester 209, or if I need to increase the headspace beyond the .012" to accommodate the shorter Federal209A primer ???
- seems to me that cleaning the bore and flash channel between shots seems to give tighter groupings. I don't mind the extra cleaning time, and as a hunter my primary concern is the first shot only.
- in prior posts i shot sub-1" groups with Pyrodex RS (using same bullets and also with PowerBelt AeroTip 245). Does it make sense to go back to using Pyrodex?
- is it likely that the change from Winchester209 primers to Federal209A primers would have any affect on the size of the groupings?
- ... or are these differences in grouping sizes just old shooter inconsistencies ??