I recently purchased a set of black powder nipples for a Uberti 1847 walker and when I received them the threads on one of the nipples was marred up where it wouldn't thread into the cylinder. Had to take to a gun smith to correct the issues before threading into the cylinder. Less than pleased with this purchase.

Reply from Slixprings:

All you had to do was contact us and we would have sent you a replacement. One bad thread out of 2+ million nipples. We didn’t even get to make it right and we get a 1 star review? I bet you'll love the performance out of them though. Maybe you can come back and tell us how great they work over the factory nipples.

Don't fit so I haven't used the nipples as of yet. I would've rated them a "I don't know" but I had to choose a rating so I chose the one that closely reflects "I don't know".

Reply from Slixprings:

We clearly list the recommended caps to be used with our nipples. This is provided on our product page, FAQ page and on the product packaging itself. Nowhere does it show CCI #10’s to be used. CCI #10 caps have a much smaller inside diameter and will not fit correctly.

I would love to say they are great, unfortunately I didn't receive them, so I have no idea what they are like.

Reply from Slixprings:

The Post Office lost this package and we sent a replacement.

Pressure vent holes are placed too far up the nipple when using CCI 11 caps (which its supposed to be good for), causing back pressure to vent into the side of the nipple and rupturimg it. Almost every shot results a cap jam, and it was like this for the whole set. Performs far worse then stock Pietta nipples

Reply from Slixprings:

If this was a problem we would have thousands and thousands of complaints of which we don’t. Read the reviews and you’ll see. Our cones have been engineered with the vent holes positioned in the proper location for optimal performance. The issue you are having is most likely from using older caps or the gun needs proper tuning.

I was somewhat pleased until one of them broke off at the threads in my walker cylinder. That would it up for me. I took the rest out and threw them in the trash, then put factories back in. I won't try any more oranything else. It's a shame. I was impressed with the service which is well above average for this day and time

Reply from Slixprings:

All you had to do was simply contact us and we would have sent you a replacement. This is very rare for these to break but we would have warranted it. You didn’t even give us a chance to make it right.

these did NOT improve the percussion cap reliability on my cap and ball .44
it's hard to find #10 for it, #11 is an option if it can ignite reliably. these nipples claim to be compatible with either.
that's not true for me at least. i still find i have many failure to ignite on initial trigger pull/hammer drops. i have to strike the cap twice for ignition.
i have very few #10's left, that ignite every pull. so i know it's not the gun.
in my humble opinion, these are not worth the extra scratch and effort

** UPDATE ** 11/02/2025

i ordered these a short while ago. i had an issue, and like an a$$ wrote a poor review rather than reaching out to the company for advice.
i received an email from the owner himself, stating he would send a different set of nipples, and offered advice on what i also needed to do.
i have to admit, ( albeit in shame ) that this company steps up!! i want to extend my gratitude, and sincere apology.

Shaun T. Hunter

bought a Colt Dragoon 2nd series and no caps would fit tge nipples were too large and track of the Wolf was out and everyone has been saying try slixshot so I ordered them. They say they fit cci 11s winchester11s and rws 1075 all of which I have but they barely fit. The rws wouldn't even fire without at least 2 strikes some of the winchesters the same.Pulled out a micrometer and 2 were a little larger by a couple thou.I chucked them in the drill and took them all down a little with a file and sandpaper so the winchesters and cci fit tight and the rws very tight but they all work 1st strike.I do like how they work now several hundred rds no lose caps and the slixshot really blow the caps off and in half but I wouldn't buy again as I don't want to have to work on somthing I buy and didn't want to have to send them back and wait for another set.Maybe I just got a bad set.

Maybe these are good for black poweder? I tried them on 2 piettas with 777 and pyrodex. Weaker ignition and 50/50 delayed firing on every cylinder. Stock nipples are much better for what I'm doing. They're well made.

Reply from Slixprings:

Tons of our customers including Competition Cowboy Action Shooters use BP Substitutes like Pyrodex with amazing results. We also use sub’s with no issues. This is the first we have heard of this so I think it’s something you’re doing or not doing in your loading technique.

There are .10 inch too ling for Pietta 36 caliber cylinders and must be shortened for the action to work properly.

Reply from Slixprings:

This customer had an older model that used shorter nipples than the standard. We sent him a set of our Pocket model nipples and those fit correctly.

I was disappointed in the nipples. 27 grains Goex FFFg. .454 ball. I was using CCI #11 caps. Although they produced good ignition, Every 3 of 5 shots blew the caps apart and jammed the revolver. I'm going to experiment and use some #10 caps (if I can find any).

Working nice but better if a tad shorter.

Came in a timely manner. I have not used the Slix shots nipples yet. It is 15 degrees out in the daytime. Too cold to stand out on the snow covered and windy range to load and shoot. I like to be comfortable when I shoot, and the bullet lube is as hard as a rock. I will try to remember to update my review this spring.

Reply from Slixprings:

Hope you thaw out soon. I’m sure you will be happy with them.

Not any better than the Uberti nipples, I would not buy again

These nipples are high quality, but they did not solve my occasional cap jam issues.

Reply from SliXprings:

If the recommended Remington #10 caps are used this problem will dramatically be reduced. CCI #11’s can also be used.

Using 30 grains bp these will blow the cap right off or apart , not recommend if you use a big load ,

Reply from SliXprings:

The intent purpose of our nipples is to split the cap to help keep it from flying back into the action.
We also recommend a lighter load. Heavier loads may require a stronger hammer spring.

The nipples I ordered for my pair of 1851 and 1860 army piettas are well made and screwed right in. The problem is all the nipples are a hair too long and upon firing the hammer can't travel far enough forward to reset the lock so when you try to cook the hammer again it locks up the revolver.

Reply from Slixprings:

A simple phone call to us would have resolved this problem. It’s not that the cones are too tall in the cylinder. They fit 99% of the revolvers out there and provide a dramatic improvement in ignition reliability without any modification. The issue is that your revolver has way too tight of tolerance between the cylinder and the barrel. Simply remove the barrel and file off material on the forcing cone until you achieve a barrel/cylinder gap of .012” to .018” or until you can cycle the gun without it locking up. If we shortened the cone height then the majority of our nipples would be no better than the stock ones which have failure to fire problems. Not all BP revolvers adhere to the same tolerances. Tuning the guns is always a good idea anyway. Also keep in mind that the deeper the wedge is inserted the tighter the cylinder/barrel gap becomes. Another option would be to take it to a competent black powder gunsmith and have it tuned properly.

The description says CCI #11 fit. The nipples are to big. CCI #11 required extra pressure to fit on the nipples. Some only fire on the second strike, indicating that the caps are not completely seated. I like the design of the nipples, quality control is lacking.

Reply from Slixprings:

Sorry to hear they didn’t perform for you. The problem is not the nipples as these are made on high quality CNC machines and our tolerances are exact. The issue is the quality or age of the caps you are using. We’ve seen this before with Older CCI #11 caps. Get some New caps and this problem will go away. The other issue might be your cylinder to barrel gap is too big or your hammer spring is too light. More than likely though it's the older caps you are using.

Regrettably the nipples were the wrong thread size. You listed these nipples to fit my Remington 1861 revolver so I bought them without removing the old ones. That is also why I bought your nipple wrench. That wound up breaking but I was able remove one . The original is a.225-32. My fault for jumping the gun.
Thanks

Reply from Slixprings:

We have never heard of that size of thread. (.225 x 32 ??) The most common are: 12-28 SAE, 6mm x .75mm Metric, or ¼ x 28 SAE. Not sure what you have. Sounds like an older imported revolver that used an odd thread size. Yes… we highly recommend removing one of the nipples and check the threads first if you aren’t sure what the brand is. Also sending us a picture of it helps. We are happy to assist in this way.

Bought the new nipples for a Pietta pistol, they fit and look fine, but I can’t use them until I find some #11 nipples. I have a case of CCI #10 caps that do not fit. I called and it was explained to me that I didn’t read the description. I do not know how well these nipples work, because I still am still using the stock nipples which work fine with my CCI #10’s
They sure are pretty though.
The nipple wrench works great with all the nipples

Reply from Slixprings:

You will have great performance with our nipples once you acquire the recommended caps. Yes... this is clearly listed in the description box on the product page.

They didn’t work well in my Pedersoli 1858 Remington. Wouldn’t set off caps by Remington, CCI or RWS reliably on first strike by hammer. Revolver has a lighter than usual spring because it’s factory match tuned. Plus the fit was so tight removing them whole and in reusable shape was a challenge. I had to use a broke screw extractor on one and it broke the tool BUT it cracked free at he same time an I got it out. The point is that these work GREAT on my other guns but didn’t on this one in particular. I have 5 good ones left and will use them if the company will sell me 1 more instead of a full set. Only reason it’s. 3 star is because of this latest experience. Otherwise it would be 5.

Reply from Slixprings:

In the description box on the product page we have the brand of revolvers that our nipples will fit. Pedersoli revolver nipples have different tolerances and thus are NOT listed. That’s why they didn’t work.

Bought the nipples to get my Colt Walker to shoot it's best. The nipples show good quality and workmanship the blow back holes should help open the caps for dislodging. The price is high they are not gold plated.

Reply from Slixprings:

All our products are manufactured in the USA, hence the price. We could offer them cheaper by using China labor and materials but then the quality and workmanship would suffer. Good and cheap does not go together.

Ordered nipples listed to fit Euroarms revolvers. Nipples nicely machined, and correct thread but too long for either my 1971 or 1974 mfg navy revolvers. Package marked for Pietta revolvers. Maybe my next acquisition will be a Pietta so I can give the nipples a fair test.

Reply from Slixprings:

Simply return the nipples and we can exchange them for the correct ones. Your older model must have used a shorter nipple which we have.

I think one vent hole would not break up the caps in so many peaces and would roll around and fall out the side cleaner.

Reply from Slixprings:

A single vent hole actually creates problems and makes the spent caps uneven. If you are using the proper caps as recommended and they are pressed on firmly along with a properly tuned revolver they work extremely well.

I had a few problems with cap jams. The caps were getting stuck in the slot below the hammer sight. I got on YouTube and observed how to hopefully solve this problem by relieving the sharp corners on that slot. Used a small stone to smooth out the sharp edges. With the freezing temperatures of the last month here in Michigan I haven’t been able to get to the range to try it out yet.

I am convinced this is the best nipple on the market. I have a variety of BP revolvers and they all work great with less cap drag and great ignition. If the south had this tecnology, they might have won even under incredible odds. Dixie might have been played today without constraint!