How to Get 300FPS on a Caliburn Nerf Blaster

If you've ever wondered how to get 300FPS on a Caliburn, here's how.
Also, I mention how the aluminum pusher doesn't get as good of air seal as brass. That's actually not true anymore because we've improved it since we shot this video. Aluminum pushers with the o-ring notch now perform just as well as the brass pusher. I'd also personally recommend an aluminum pusher over brass because of the dogbone ram.
0:45 Brass Barrel
03:10 Half-Length Darts
08:43 Aluminum Ramrod/Pusher (go with aluminum instead!)
09:44 Brass Ramrod/Pusher
13:32 Firing test with brass breech
15:15 Springs
21:41 Machined Parts
24:35 Aluminum Coupler Inserts
25:10 Firing test with spring load out and machined parts
26:41 Good airseal
28:54 For 300FPS-400FPS
*Note: I reference the all-aluminum machined Caliburn video. That video is on an old laptop that won't turn on, but when I get it to work, I'll post it.
Things referenced in the video:
Brass Barrel & Ramcore: frontlinefoam....
Machined Plunger: frontlinefoam....
Ramrod for Caliburns: frontlinefoam....
Printer files for Brass Breech parts: www.thingivers...
270-300FPS Blasters:
Caliburn: frontlinefoam....
Rainbow Pistol (full-length setup): frontlinefoam....
300-400FPS Blasters:
Tempest: frontlinefoam....
HPA U Talon Claw: frontlinefoam....

[@FrontlineFoamBlasters]

UPDATE! The aluminum ram doesn't leak anymore. We've addressed this issue by used two o-rings on the ramtip and/or making the o-ring notch taller and/or using a slightly larger o-ring.

[@jimmitron]

Other than k25 and k31 springs are there any other more powerful springs that fit inside the other

[@jimmitron]

Please reply

[@darkenchanter2964]

What website do I go to buy this gun? Does anyone sell this completed?

[@BradleyPhillipsYT]

My favourite recently is to fully sleeve the brass in aluminium and use a scar barrel designed for the aluminium (16mm) so no brass is exposed at all

[@ShadowMajere]

Imma have to try that. Probably makes it easier since most mods are made for the larger aluminum tubes

[@rileycook7686]

Yeah thats a good idea

[@grapeapeductape2489]

This is the rifle that took out Kennedy at this point

[@ShadowMajere]

Love my brass setup I got from you guys with the k-14. It did make me have to relearn loading since I was used to vanguard setups and kept forgetting to prime to change magazines lol. Once my next order from you guys arrives, I will have my talons converted to brass as well

[@FrontlineFoamBlasters]

Yeah... that catches me off guard too sometimes. Still.

[@eagelcat]

the Nightingale on on its own is an awesome blaster the small it seems like it's going to make it better

[@Stacey_-bf2mb]

I will start going to the gym if it means I get that k14

[@GetLikeJay]

Does the caliburn come pre-built or does all the parts come and I got to build it myself? Looking forward into getting one

[@FrontlineFoamBlasters]

Both pre-built or a kit version! Pre-built: www.frontlinefoam.com/product/caliburn-diy-kit/ Kit version: www.frontlinefoam.com/product/caliburn-diy-kit/

[@jimmystancliff2843]

Can you cut the spring in half then double the spring up put the cut half on the other half to make one would that make it stronger and fit better

[@Videos4uByme]

Sweet!

[@jimmystancliff2843]

Can you cut that 400 spring down a little bit the one that hits about 400 can you cut that down so it's not as strong maybe five or six coils

[@Eulemunin]

I wonder what you would recommend to push a megaburn up to the 200 FPS level.

[@trentencraig5622]

Nfstrike boomco darts 2020 start the trend on every nerf video

[@jimmystancliff2843]

Can you also use teflon tape for a good seal cuz I use teflon tape for pipes water so it doesn't leak through the threads

[@Sci_X1]

So what were all the materials used for this so I could possibly make this on my own

[@rileycook7686]

This is exactly the video i was looking for Also what fps would you get from a k31 inside a k25 spring with an 18inch aluminium barrel but everything else is default because thats what i ordered from your website a week ago and im curious to know what fps that would shoot

[@FrontlineFoamBlasters]

You'd probably expect about 230-280FPS range. Chronograph it when it arrives. Depends on the rest of your setup too.

[@rileycook7686]

@@FrontlineFoamBlasters wow thats good how heavy would the prime be

[@FrontlineFoamBlasters]

@@rileycook7686 a little heavier than a k26 (around 14kg)

[@rileycook7686]

@@FrontlineFoamBlasters ok thanks

[@andrewanderson3472]

What about carbon fibre barrels , or putting a layer of carbon over your brass

[@ChungyCheese]

would this work in an indra?

[@falsehashtags6581]

So... I bought the aluminum inserts for the Milan coupler, and the brass kit, and the takedown pins won’t fit in the inserts, and the rods don’t fit in the brass muzzle. Should I just drill out the holes (like maybe in a vice for the aluminum)?

[@FrontlineFoamBlasters]

Yup. The alu inserts and prints sometimes are slightly misaligned. Hitting it with a 3/16 drill does the trick (same with muzzle).

[@falsehashtags6581]

So the drilling worked, but now the ramrod won’t fully go in the breech- like gets stuck really bad when it’s almost completely closed. Maybe the ram core is missaligned? Otherwise it’s working fine, just need to reprint the Milan coupler and get a aluminum plunger.

[@FrontlineFoamBlasters]

@@falsehashtags6581 Gotta make sure the front half especially the brass barrel portion is aligned with the ram. The ram should sit parallel with the priming bars.

[@ADOPTMEDROO]

how much is the k31

[@ruru2500]

Reading off an off screen prompt for the 'sciencey' part?

[@philipbutler6957]

Will the same 18 inch brass barrel/breach components work with your U Caliburns?

[@FrontlineFoamBlasters]

Unfortunately not. The u series uses a different clamping method for the barrel. However it would be possible to make it work with some tinkering.

[@pachoo0464]

Is 18 inches of 17/32 brass the best barrel length for a k26 with a perfect air seal or would there be any performance to be gained with a 19 or 20 inch barrel?

[@wongyewxuan3880]

18" is wayyyyyy too short. im using 30" 17/32 for 315fps ave from a pro25 spring for optimal fps

[@MudMotorsMax]

@@wongyewxuan3880 where can I get this and how do I install the brass tube

[@aidanfriedfeld8889]

Would you say the 18in brass barrel would get better performance than the 24in aluminum barrel? I’m trying to make a silly high FPS plinking caliburn.

[@FrontlineFoamBlasters]

Yeah, the 24in would probably give you more accuracy, but it is super long and the brass could easily hit stuff and bend. I generally don't go longer than 18" for that reason.

[@wongyewxuan3880]

then buy 3ft long 17/32 brass. even a pro25 spring requires ~30" of 17/32 brass for optimal fps

[@johnnyklein181]

Would a metal coupler help with a k14 spring to hold the Caliburn together

[@FrontlineFoamBlasters]

Perhaps, but the K14 is just a heavy spring load in general. If you're going with a K14, I'd say upgrade every part imaginable-get an aluminum plunger, sear, trigger, rambase, coupler inserts... everything. You'll also want to do maintenance on your blaster frequently as well.

[@jimmystancliff2843]

Do you guys own any lathes

[@jacksonbroadus6298]

Do you guys reccomend liquid lubricant or a thicker grease type lubricant.

[@FrontlineFoamBlasters]

Here's the lube we use: frontlinefoam.com/product/silicone-lubricant/

[@AustinMichael]

@@FrontlineFoamBlasters damn I know you guys gotta make money but that tube is 5 bucks on amazon with prime shipping lol

[@bdude6093]

Use the 22kg on arm day

[@makewithmegma]

👌👍🔥

[@falsehashtags6581]

Can’t you just put aluminum around the brass?

[@FrontlineFoamBlasters]

Sure can. We call it "brass in disguise."

[@falsehashtags6581]

Wait actually how does the aluminum barrel cover secure the brass? I think I’ll get one, like the 18 inch with the receiver

[@FrontlineFoamBlasters]

@@falsehashtags6581 the cover slides over the brass. It’s a very close fit. To keep it secure, you can add a few wraps of electrical around the brass before sliding on the cover

[@falsehashtags6581]

@@FrontlineFoamBlasters Sorry if I’m asking too many questions, but is the barrel cover just the regular barrel that I’d get from captainslug’s hardware kits? Also, does the reciever come glued on to the barrel if I get the barrel with receiver and does the receiver have the ramrod in it when it arrives?

[@FrontlineFoamBlasters]

@@falsehashtags6581 no, it’s a different sized tube. The receiver is indeed glued onto the barrel. It doesn’t come with a ram by default.

[@ThatSingleBastard]

Read my mind at 16:29 but I wasn't thinking about nerf

[@bravoteam8308]

😐

[@abhie4265]

Let's do something crazy, Hit 500 fps!!!! ✌😂

[@dougs2313]

if u order from them expect not to get your parts

[@FrontlineFoamBlasters]

Hey is there a problem with your order?? We'll get it sorted out. Sorry about that! Please email me directly at [e-mail]

[@dougs2313]

@@FrontlineFoamBlasters i did and you finally refunded--order placed at beginning of feb -i tried multiple ways to get ahold of ya -phone call text, facebook, e-mail---nothing and i get a response on this vid- you company is a joke just look up people response on fb for the horrible printed parts and service

[@dougs2313]

tried calling texting e-mailing and several other ways

[@dougs2313]

@@FrontlineFoamBlasters but i will say u do make good vids--just not a good business company

[@FrontlineFoamBlasters]

@@dougs2313 so sorry about that! Contact me and we can get it sorted!