Are Small Pistol Magnum & Small Rifle Primers Safe in 9mm? 

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You guys freaking rock for actually putting data behind this, rather than opinions on gun forms. I've shot hundreds of 9mm loaded with small rifle (DA/SA CZ) primers, and I've had no pressure issues.

No myths - just data driven facts. Love it.

This really destroys the old rumors I've always heard.

Im 65 been reloading since teenager i knew these facts but nice to see guys telling people reality and facts concerning pressure levels . Thanks for this public service you guys are great

I'm happy that you've shown some actual pressure tester data, thanks much.

Charging pre pandemic prices... God bless you.

You win the RU-vid video of the year award. I've been staring at several thousand wolf small rifle primers in my reloading room for the last 6 months. I spoke with a customer service rep for one of the powder manufacturers and asked if I could substitute Magnum or rifle primers in my 9 mm loads. I thought he was going to jump through the phone. He said it wasn't safe.I've used small pistol Magnums in my 9-mill loads before without issue. I was reluctant to use the small rifle primers. I strongly recommend anyone doing this and using a Glock pistol install one of the wolf extra power firing pin springs. It is a 6 lb spring compared to the factory 5.5 lb. It does not increase trigger pull much at all. It provided 100% reliable ignition with my Magnum primers. I had about 10% fail to fire when I used the factory spring in a Gen 5 Glock 19. Thanks again for putting out a useful video with actual pressure test data. No one else has done this

This is Awesome, I had no idea that this was the case. Thanks for the data!

I am glad I found your site. I reload and did not know that I could use the 3 different primers too reload my revolver rounds. I have all stock hammer springs and I will be able too reload a lot more rounds with the different primers without the worry of excessive pressures. Thank you for the great video.

Been doing this for years. But it never fails some safety Karan comes along and tells me I’m unsafe. So I leave it to myself. Thanks

I can't thank you enough for this information. This what I've been searching for as a competition shooter who does his own reloading. Please keep up the good work.

This is fantastic information, thanks for sharing and for the actual data! I'm one of those detail guys from Missouri the Show Me state! :-) You're awesome and for the fantastic information I will try my best to support you with what ammo I purchase and will send my friends your way!

Thank you sir!!! Data over opinions anyway of the week.

Thank for showing everyone the pressure differences between the different primers

Thank you for answering this question with real data, not opinion like so many others.

Awesome demo. I was running low on small pistol, but got plenty of small rifle and you just made my day.

Wow thank you! I have been reloading for 43 years and always wondered about this primer data. Thank you so much for doing the legwork and testing. Amazing results.

Very cool info. I actually have a considerable amount of small rifle primers, but I no longer have a small rifle. So... this info was invaluable. THANKS!!!

Awesome information. No one I know personally , who reloads , has been able to answer my questions on primers the way you have in 10 minutes. Great content! Thank you!

One time I screwed up and bought large pistol magnum primers to use to reload .45 ACP. When I shot them, i noticed no difference in performance or accuracy. Your video confirms that there is really not much difference. It's a great video and confirms that it's safe to use the wrong primers and that you won't blow up your gun or injure yourself. Thanks for clearing up any of the myths that exist.

Thank you very much.Relieves some of the concern that I had with my Dad’s leftover primers.

I had heard in the CCI primers that there was virtually no difference between small magnum and small rifle. I had already decided that when things return to normal I was switching exclusively to small rifle for all my needs, this just helped confirm my decision.

Thanks so much for this info. I bought a box of 1000 small pistol magnum when that's all that was left. Thanks for the peace of mind.

Thank you for performing this benchmark. It cleared some things up. ‘This primer shortage is frustrating. Like everyone else I listened to the CEO of Federal explain that they are using 100% of their primer capacity to manufacture their own ammo so there is nothing left for the smaller ammo manufacturers or reloaders. Yet when I go to Canada all their gun stores and Many retail stores like Walmart have no ammo shortage and all kinds of U.S. primers on the shelf and available to Canadian reloaders. Why are the U.S. manufacturers shipping their primers to Canada and not using them to make their ammo?

Smiling! Thank You! I just loaded a couple hundred 9mm with small rifle primers CCI 400 (out of CCI 500) tested them yesterday with 3 of my 9mm and they all did well with them. I checked the specs and the one thing I did run into was the primer is just a little longer and you have to press harder are you get a little wobble when you set them butt down on the desk, I needed the right arm work out anyway. Smiling Big....

How has it taken me TWO YEARS to find this video?!?! FANTASTIC information. Thank you Super Vel crew!

Thanks for the info. It has eased my mind about using small rifle primers when they were all i could get

The video that gave me all the answers without wasting ammo, primers and time to test and chrono loads with diff primers. I’ve been reloading for 10+ years but never bothered to look this up. Thank you!!!

Thank you I was down to 3000 small pistol primers. But have almost 10,000 small rifle primers.

Great video and tons of respect to you for putting it out there. Reasonable prices too. You've got yourself a new customer. When stuff is back in stock you'll be my go to. Thanks

Reloading manuals that I have read say don't mix. You are the first source that I have heard say it is ok. In a pinch I would do it.

OUTSTANDING video! So, the different primers are only about cup thickness and nothing more. I have been reloading 30 years and did not know that; I was merely listening to the conventional wisdom. This is great news, also, because I have a few SPPs and SPMPs but I have lots of SRPs which I can use to reload in pistols. Awesome. DATA, baby!

Dude I’m so happy I seen this video. I been using small pistol Magnum primers for my reloading of 223. 52 grain . And I have to say they work great . But was looking for a answer And you answered it thank you 🇺🇸

Really appreciate you tackling this topic. I picked up 6k Federal Small Pistol Magnum primers for around $25/1000 a year ago and was trying to trade for regular small pistol but looks like I’ll do load development for them too.

great work.. I think this pretty much concludes that primers don't have an impact on the case pressure, at least in pistol. As long as the primer properly burns all the powder in the case, the pressure or muzzle velocity should be consistent throughout different types of primers.

Great ammo, good prices, no gouging, let's keep a great American company going that is doing their best for us

This is the best video on being able to mix primers thanks for the info

Excellent information! Now what about using small pistol primers in rifle cartridges?

Thanks for clearing this issue. Ill be getting you my primers soon. Sucks my local ups won't ship them, but I'll figure it out. Thanks.

Beautiful. You’ve answered an age old question for me and all of us, as a lifelong handloader. Thank you! I’ll be sending you some business. I’m one of the lucky ones who stocked up deep and heavy. Tons of primers of all types.

Thank you for this information.

Thanks so much for this great informative video on an important safety factor of primer use and applications. Recently I used some old CCI Small Rifle Primers in 45 APC equipped with the SP primer pockets. Chronograph showed appx. 2-3.5 FPS faster speeds, but no pressure signs at all, using IMR 700X powder. I use a Frankford Arsenal hand held primer installation tool, equipped with adjustable primer depth setting. I set all of my primers @ .002"-.003" below the surface or past flush. When I measured the primers, both the SR and SP are exactly the same dimensions in depth and diameter, where the LR are different that the LP. Again; thanks to your video with specifications and excellent testing, I am comfortable to have checked my use of the SR primer in my 45s.

Thanks for the no BS info.

I know I'm very late getting to watch this and comment, but I just wanted to tell you how much I appreciate good information. Not just your say so, but the on camera testing to confirm it. I'm a new reloader, and just about to finish my first box of Remington primers for 9mm. Its a milestonte, from nervous Nellie to tweaking, the quality of my ammo, and having someone( a competition shooter) teach me the safe habits of reloading and how to conduct load developement . Thanks again, its amazing I am always learning.

My shelf is loaded with all 3 You made me very happy Thank you

Awesome video! Ha ha I just did chrono testing with CCI, Federal, and Winchester small pistol, small pistol magnum, small rifle in 9mm because I was tired of hearing all the “your gun will blow up if you even THINK about using a magnum primer in a non-magnum load!” old wives tales. I found that not only was there no difference in the types of primers, there was essentially no difference across the brands.

Thanks for the heads up. I really appreciate the information on small rifle primers being used in small pistol cartridges.

In the old days ( 40 years ago) small primers used to say on the packages small rifle/pistol on them. The large ones are a bit different in height and strength but not pressure. I've only found issues with striker fired weapons sometimes takes two strikes to set off large rifle primers as they are a bit harder. But hammer fired weapons large rifle works great. Magnums just burn hotter but not more pressure. Ivr swapped em all around for the 4+ decades Ive loaded I also reload them. Once used they will work in anything as even the harder large rifle bow have been weakened enough

Excellent information! The only problem I have had is Sellier & Bellot small rifle in .380 pistol loads. Neither the Kahr CW or Glock 42 would fire the S & B SR (light strikes). I had to pull 100 rds 😬. Should always test a small batch. 👍

Excellent video. Thanks for taking the time to run the tests and present the facts.

Thank you very much for publishing this video. I load different calibers, both pistol and rifle, using their respective “appropriate” primers. Now, I know I can mix and match within certain safety parameters. Much respect, sir! I salute!

Excellent publication, timely and very helpful.

I have always used Winchester small pistol Magnum with great luck in my 9mm. Great to know that you can use small rifle.

Thank you, I was considering using rifle primers in my 9mm. just like the 38 super guys. But I didn't know who to ask for advise. I will sub.

Hey Guys, Thank You! I really appreciate this.

Great ammo, Great service, no gouging, keeps us up to date on ammo, thank you for being an honest American company

Excellent...I've been reloading since 1974...until now this has never been an issue. Thanks for showing us reloaders this data...Until just recently...before I found 3K S P primers..I considered using S R...but hesitated..

Brooooo! This is fucking awesome! Now I have this video to reference when people wanna argue or look at me like I’m completely insane when I suggest that they can substitute primers! I’m almost sad now, bc I have a good bit of small rifle and I just started loading 9mm and I don’t want to use all my primers before they start coming back in stock lol

I didn't get into reloading until the very beginning of woohan. CCI 550 was all I could find, so that is what I worked my load up with from the start. For a while, I was in good shape on the CCI 550s because no one was buying them up, no longer the case. VVN320 and CCI 550s is my preferred combo now, 4.2gr for 124 bullets and 4.8gr for 115s

Very well spoken. Appreciate you taking the time to make this video. Thanks again, Travis; 2A Tactical LLC Boise, ID

This is great information. Thank you. Now what I would like to know is where to get primers of any kind

Awesome information. Thank you.

Great piece. I have been loading for over 50 years and I can tell you he is spot on. I had to load 9mm luger and low and behold I was out of CCI-500 so I substituted CCI-550, 124 gr Nosler, and Hodgen HS-7 (Speer data). No Problem.

Good info. I’m loading 9mm with small pistol magnum primers and now you have given me the data that I needed. Thanks

A really outstanding video. No opinion, no theory, just facts.

Excellent video, a friend asked me about using small rifle primers for pistol loads. Now I can reassure him it is fine. Thank you so much!

I am currently using large pistol primers to load .308 rifle ammunition using 168 gn bullets and 46 gn CFE 223 powder. Haven't had any issues so far.

Been using small rifle primers in my 9mm for years.

Outstanding video!!! These are the types of videos that add to all of our knowledge. Truly appreciated. It would be very informative to have a similar video showing the same test with standard large pistol and large pistol magnum primers.

Thank you. I’ve been looking for this kind of information. Why this doesn’t show up higher in search results baffles me. Just wish I’d been able to find this video sooner.

Thank you very much for this video! I had heard about people loading 9mm with small rifle primers, and tried it with 7 test rounds in my Glock G45; all 7 rounds shot flawlessly! That said, I was hesitant to make too much of a habit of it, despite me having a good amount of small rifle primers on hand. This video definitely makes me feel more comfortable with doing it!

I ordered several of your SCHP 9mm and glad to have them, though I'll probably never fire them! Just one of those "Piece Of Mind" to have.

This is the best video I've seen all day, thank you so much for sharing this. I have passed by small rifle primers several times thinking them unsuitable for 9mm. Oh well, I won't make that mistake again! On a side note, I learned that it is not wise to (mistakenly) use large pistol primers in place of large rifle primers. Remington packaging looks similar for both, D'Oh! I caught myself after 20 rounds, thankfully. I took a chance and fired them (7x57 Mauser loads, loaded below maximum in the Speer manual). Most were okay, but a couple had minor piercing. I was lucky as well as stupid. After rooting around on the internet I found others that had worse luck than I did with pierced primers on different calibers. The takeaway lesson is to carefully double check ALL of your components and charge weights before proceeding. A kinetic bullet puller is also a sound investment. Great video, thank you!

You guys are awesome, one of the few companies that prioritize the customer. Customer for life right here!

I am so glad I stumbled onto this. I never thought to look into the differences and just went by the recipes in the loading books. Thank you for sharing your knowledge.

I had no idea small rifle primers would work in small pistol pockets. I wanted to work up some higher pressure hunting loads for my Ruger 77/357. Think I will use those the next time to see if it keeps my primers from flattening out so bad. No craters on the current max loads of h110 yet but maybe this will give a little extra safety cushion to get a bit more.

thank you for dispelling myths and putting facts out there for all of us shooting during Primergeddon .

Likely the most useful video on youtube...cannot thank you enough!

Awesome information. I have so many small rifle primers and really was not sure if I could load them in place of my small pistol so this helps a bunch

Been curious and a little concerned about this as a new reloader! Just bought some magnum small pistol the other day to try it. Now I feel confident that it's safe and will not hesitate to buy more when I see them. Thanks for the great video!

i once loaded 44 mags with large rifle primers and had multiple misfires, they also often did not sit deep enough in the primer pocket

I had been looking this info for a year. I had a thousand small pistol magnum primers, but was unsure whether to use them on my 40mm reloads. great video thanks.

Great info. Always curious what the difference was, and why.

Thank you for your clear and concise work on this. As a new reloader it's helpful to see and now I am curious to try myself and run some loads through my chrono. Thanks for the inspiration to nerd out on more details haha

I forgot and loaded about 30 9mm with small rifle primers when switching from rifle to pistol. I know....I know....can't make mistakes like that. I bet most of you guys have done it too. Anyway.....I was going to disassemble them but now I know I'm good to go as is....thanks.

Awesome video! Thanks for making it! I get into this debate with my customers all the time. Mahalo from Hawaii!

Thanks for a useful video. I have always wondered what the difference would be. Good to see the Super Vel name still out there.

Thanks been using small rifle in my 9mm with zero issues.

This was great information, truly appreciate you taking the time for this testing!

You have gained a future customer. Great video.

Fantastic video. I've been using small mag primers in my 38spl loads for years.

I like magnum primers in Hammer fired system only. I don't want the risk of lite strikes in an emergency situation. CCI are my favorite and I dont have any missfires with them .

CCI #400....it does it all. Loaded probably 100,000 in 9mm. Tested in everything from Gucci Glocks to full-auto MP-5. Shot a ton of rounds to the point I felt that they were reliable enough to sell. It made velocity more consistent. Also works great in 357mag when using magnum powder

Thank you for the test video it helped me tremendously because I started loading the 5.7 by 28 now I know the difference between the primers I can use my small rifle primers

Thank you for your testing. From experience, the S&W M&P and the SCCY 9mm pistols have a hard time firing the small rifle due to the light strikes. Most others seem to fire it well. .380's loaded with 50-60 year old CCI SPM's from a Ruger LCP also functioned well.

Thanjs for great information.As a new reloader I was curious about this.

Can you load 124 grain? Got my hands on 6000 small pistol primers and 3500 large pistol primers at an estate sale all winchester.

Thanks big time for the video we already knew small P and small R interchange, but weren't sure to try put small R primers in 9mm cases. AWESOME !!!

Excellent video, thanks for the info! Due to necessity, I have been using Magnum and rifle primers both small and large in my pistols and have not noticed any difference.