WSRP

[Kracken McGraw]

Since the Winchester small rifle primers are showing up pretty often now, are they good to go? After reading about the Fiocchi primers being to soft, I thought I would ask about these

 

[D-4297]

I've used the "new" WSRP for practice to save my Rem 7 1/2's , and found they worked pretty good . Just a slight change in POI , overall . Not enough to tell if it was me , or the primer . They do work good in colder temps than some other primers I've tried .

 

[jepp2]

I thought I would ask about these

I use some but in lower pressure loads.

Small Rifle Standard

CCI 400 -thin .020" cup, not recommended for AR15 use by CCI/Speer. Good for .22 Hornet, .30 Carbine. See Note 1 at the bottom of the page
CCI BR4 - match primer with a thicker .025" cup.
Federal 205 - Mil-Spec cup thickness according to Federal - okay for 5.56mm. .0225" cup thickness.
Federal 205M - same as the 205 but the match version.
Magtech PR-SR - .025" cup thickness (not much feedback yet on this new primer as to AR15 suitability but with the same cup thickness as the Rem 7 1/2 it looks good so far)
Remington 6 ½ - thin .020" cup, intended for older, lower pressure rounds Remington says do not use for the .223 Rem or other similar pressure rounds. Good for .22 Hornet, .30 Carbine.
Remington 7 ½ BR - A match or "bench rest" primer. Lyman & Nosler classify this primer as a Standard. Remington says the compound is the same as the 6 1/2 but with a thicker .025" cup.
RWS 4033
Winchester WSR - some piercing issues noted when changed from silver to brass cup. Cup thickness is a bit thinner at .021". Most say they are good to go for the AR15 despite that, probably because of the hardness of the cup. Some feel they are less resistant to higher pressures.
Wolf/Tula Small Rifle SR #KVB-223 - soft, sensitive copper cup, not recommended for AR15/military rifle use or high pressure rounds.

 

[Propbndr]

I have used CCI 400‘s in my AR for several years. I have never had a pierced primer in over 2,000 rounds.

 

[JFrank]

A few years back I tested every primer I could get my hands on in a side by side format at a couple hundred yards ( iirc) using the same / best load with my 6 br. These all shot well and the thought was that I could likely use any of these except the REM 6.5 , the caveat being that one has to continue to fine tune for the individual rifle for longer distances.

 

[762willdo]

I have no way of measuring the cups but I can tell you the 205M cups pierce on my 223AI loads but the 205MAR do not…….

 

[Michael Huebner]

Since the Winchester small rifle primers are showing up pretty often now, are they good to go? After reading about the Fiocchi primers being to soft, I thought I would ask about these

Winchester small rifle primers are fine
Have interchanged with Federal in the 6PPC on pretty warm loads and they performed very well on the accuracy front.