209a -- w209
06-06-2016, 08:58 AM
#1
Nontypical Buck
Thread Starter
Join Date: Aug 2008
Location: Rapid City, South Dakota
Posts: 3,732
209a -- w209
The old clock went blind; purchased a new one, and had to see how it worked. For the first shot, it was placed about 15' from the muzzle, and it read 1057 fps, so i figured it was far enough away, the sabot had already separated from the bullet. Moved the clock to 9' from the muzzle, and shot 16 shots shooting and reloading, shooting and reloading. Temperature was 50 at the start, and 54 when finished. What i wondered was if the clock would show me a difference between the Winchester W209 primer, and the Federal 209A primer. The rifle used was a Dream Season. The load was 105 grain Blackhorn. Sabot was black crush rib. Bullet was 300g XTP.
Kinda cool to have a clock with a memory, and not having to write anything down when shooting different loads.
Out of curiosity i had the machine eliminate the highest and lowest speeds of both primers, and recalculate average, and deviation.
W209......................... 209A
Avg 1925 fps.................Avg 1929 fps
SD 9.............................SD 7
06-06-2016, 09:09 AM
#2
Giant Nontypical
Join Date: Mar 2010
Posts: 5,605
Those are the 2 primers i prefer. I normally just use the Win209 but my new plug will be headspaced to be able to use Fed209As better. My DISC Original is the "loosest" of my Knights and gets no crush with a Fed209. My new plug will give me about .003 crush with the Fed and about .006 with the Win in that rifle. I will get a bit more in the 54-120.
Since the Original 45 is mostly for sabotless i think the Feds are a good idea. My bare bullets load pretty loose. I cant use the Feds now without dry firing to remove the primer which is a bit annoying.
Since the Original 45 is mostly for sabotless i think the Feds are a good idea. My bare bullets load pretty loose. I cant use the Feds now without dry firing to remove the primer which is a bit annoying.
