Small Primers in 45ACP leaving unburnt powder?

[glockdude1]

Yesterday I loaded up some 45ACP and did a little testing at the range....using my Sig 1911 Match Elite

Some of my loads had small primers and some had large primers..

I used HP38/231 powder and Nosler HP's..loaded up the same..

The small primers had a much softer recoil than the large primers, which leads me to believe that all the powder may not have been ignited with the small primers....

Am I right in my assumption??

The accuracy was about the same, but I would worry that I may not be able to make major in a match..I don't have a chrono, so I don't know what the power rating was on the small primer laods..

[Dirty Rod]

I've heard people say that about loads that are at the top end of the range. I use low to midrange loads and have not seen a difference in powder, accuracy, or velocity.

[Steve RA]

For .45 I use Federal small primer cases, Tula KVB-223 small rifle primers and Clays and have never noticed any unburned powder residue.

One nice thing about using the SRPs is you can use them in a lot of calibers and only have to have one primer size and brand.

(Large rifle is obviously an exception to this)

[glockdude1]

If the small primers give me less recoil, should I assume that the power factor will be lower?

[Steve RA]

A chrono is your friend !!!

I don't know.

[retarmyaviator]

Loading with Bullseye there was no difference on the chrono between large and small primers. No difference in the residue left on the brass.