Winchester® Bulk Pack Rimfire Ammo is the perfect commodity for high volume shooters who enjoy plinking, varmint and small game hunting, and target practice. Driving a copper-plated, lead bullet at high velocity, Winchester .22 ammunition cycles in semi-autos, as well as any type of firearm action, leaving minimum lead residue in the barrel, feed ramp, or forcing cone. The clean-burning powder and priming also contribute to maintaining firearm actions clean for reliable function. Winchester Bulk Pack is a great value for accurate and reliable rimfire ammo.
great target round
this are great for just shooting they have no problem in a auto louder i has jammed once out of 555 rounds and that could have bin the gun worth the money my 7 year old sister learned to shoot this .
September 25, 2012
Not good for Ruger SR22.
Bought a box of Winchester 555, shot the entire box at the range with my Ruger SR22. In each 10 round magazine an average of 3-8 rounds per magazine were not cycling the slide, I had to manually cycle out the last fired round. It seems like it does not have enough power to cycle a semi-auto. At least 3 times the gun never locked back after shooting the last round from the magazine. The gun over heating MAY BE a reason for not cycling, not sure. There were 4 or 5 rounds that failed to extract, but then again I’m not sure if it was due the gun heating up or if it's the gun’s extractor that is not strong enough. Everyone single round did fired.
September 24, 2012
I usually tend to shoot Federals, but these work great if you wanna go out in the yard and just shoot stuff. So far I have not had any reliability issues with them in my guns. Have never used it for hunting though.
October 14, 2011
They appear to be copper plated. They fed well into my Ruger SR22 but failed to cycle my slide almost 3-8 times per magazine of 10. I did have 4-5 cases that did not extract but they may be due to my extractor and/or the gun heating up.
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