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:

We’re sorry that one of the nipples had a defective thread. Although this is extremely rare among the more than two million nipples we have produced, we stand behind our products and would have gladly sent you a replacement if you had contacted us. We hope you will give us the opportunity to make this right and that the remaining nipples provide the improved performance they were designed to deliver.

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:

The recommended caps for our nipples are clearly identified on the product page, FAQ page, and product packaging. CCI No. 10 caps are not included among the recommended options because their smaller internal diameter prevents them from fitting 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, so we sent the customer 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:

This is not a recurring issue based on the many nipples we have sold and the customer reviews we have received. Our cones are engineered with the vent holes positioned for optimal performance. The issue you experienced was most likely caused by older caps or a revolver that requires 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:

We’re sorry to hear that the part broke. This is very rare, but it would have been covered under our warranty. If you had contacted us, we would have gladly sent you a replacement and made 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:

Many of our customers, including competitive Cowboy Action shooters, use black-powder substitutes such as Pyrodex with excellent results. We also use these substitutes without experiencing problems. Since this is the first report we have received of this issue, it may be related to the loading process or technique rather than the powder substitute itself.

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 required shorter nipples than the standard size. We sent him a set of our pocket revolver nipples, which 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:

We hope you thaw out soon! We’re sure you’ll 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:

Using the recommended Remington No. 10 caps should significantly reduce this problem. CCI No. 11 caps may 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:

Our nipples are designed to split the cap, helping prevent it from being blown back into the action. We also recommend using a lighter load, as 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:

Please contact us if you experience this issue, as we are happy to help determine the cause. Our cones fit the vast majority of compatible revolvers and are designed to improve ignition reliability without modification. In this case, the issue may be unusually tight clearance between the cylinder and barrel rather than excessive cone height. Keep in mind that inserting the wedge farther can reduce this clearance. Because correcting cylinder-to-barrel clearance requires careful measurement and fitting, we recommend having the revolver inspected and properly tuned by a qualified gunsmith experienced with black-powder revolvers.

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:

We’re sorry to hear they did not perform as expected. Our nipples are precision-machined on high-quality CNC equipment to exact tolerances. The most likely cause is the quality or age of the caps being used, as we have encountered similar issues with older CCI No. 11 caps. We recommend trying a fresh supply of caps. Other possible causes include excessive cylinder-to-barrel clearance or a hammer spring that is too light, although older caps are the most likely source of the problem.

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 are not familiar with a .225-32 nipple thread. The most common sizes are 12-28 SAE, M6 × 0.75 metric, and 1/4-28 SAE. You may have an older imported revolver that uses an uncommon thread size. If you are unsure of the revolver’s make or model, we strongly recommend removing one nipple and verifying its thread size before ordering. You may also send us a clear picture of the revolver and nipple, and we will be happy to help identify what you need.

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:

Our nipples should perform very well once you obtain the recommended caps. The recommended caps are clearly identified in the description 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:

The product description lists the revolver brands our nipples are designed to fit. Pedersoli revolvers have different nipple specifications and are therefore not included in that list, which is why these nipples were not compatible with your revolver.

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 using quality materials and skilled American labor, which is reflected in the price. Manufacturing them overseas could reduce the cost, but it could also compromise the quality and workmanship we are committed to providing.

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:

Please return the nipples, and we will gladly exchange them for the correct ones. Your older model likely requires a shorter nipple, which we have available.

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 can create problems and cause the spent caps to become uneven. When the recommended caps are used, pressed on firmly, and paired 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.

still have the nipples rub the back strap of the revolver, (Pietta)

Reply from SliXprings:

Thank you for your feedback. Manufacturing tolerances can vary among Pietta revolvers, and a small percentage may have tighter-than-normal clearance. Please contact us so we can confirm your revolver model and determine whether our shorter nipples would provide the proper fit.