Boat tail slugs - not used by more than a handful?
- Thread starter Centercut
- Start date
A few airguns have a fast enough twist rate and enough fpe to take advantage of that higher BC boat tail shape. G1 works at supersonic and OK up to about 900fps. The RA4 drag model is a better match when shooting a boat tail as it approaches Mach 1. SLG0 is also closer if you can use it.
Shooting a short projectile at 950fps or less, a flat base is great. If you are shooting a 40+grain .217 at 1000+fps, than there should be noticeable benefits with a properly sized boat tail.
Shooting a short projectile at 950fps or less, a flat base is great. If you are shooting a 40+grain .217 at 1000+fps, than there should be noticeable benefits with a properly sized boat tail.
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Although I'm sure I still do not know how to use strelock that well yet. Make this comparison between a 40 grain Javelin going at1080 FPS compared to Altaro's 40 grain going 900 FPS and see What kind of speed and foot pounds of power you have at 300 yds and beyond.
And the Altaros boat tail slug
For me at least it will be a lot easier to make my gun push a 40 gr to 900 fps than 1080 fps.
Even though it's not maynot be the right function to use, it give some very interesting values to look at.
Allen
And the Altaros boat tail slug
For me at least it will be a lot easier to make my gun push a 40 gr to 900 fps than 1080 fps.
Even though it's not maynot be the right function to use, it give some very interesting values to look at.
Allen
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Plug me in. Please. .30063 ish vulcan3 30 cal the mag might be a limiting factor. Don't know I just hate shooting non boat tails. Can't get anyone to make which is surprising for such a popular decent gun. Please call me at 9283794275I like them....for my heavier slugs....
Since it displaces so much lead in the base....
It will make it a longer slug, compared to a flat or dished base slug!!
Stuart
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@Preston tist You may want to contact the young man who runs this site
.30 Slugs - Griffin Airgun Ammo
griffinairguns.com I’ve purchased slugs from him and he is legitimate. In my opinion he makes good boattail slugs.
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That's the slugs I cast and shoot out of my Sumatra. 25. They seem to be really accurate out of its 1:18 barrel.If you want to jump start the addiction and can't wait you can go to
Altaros Turned Slugs — Silent Thunder Ordnance
Precision lathe turned projectiles have long been the pinnacle of ammunition, however the difficulties in turning lead always meant airgunners had to settle for swaged or cast slugs. That was, until Altaros developed the technology to CNC turn soft lead slugs. This advancement allows them to producewww.silentthunderordnance.com
They have the .25 kings. I did not only because I found out about the Queens in 25.
Allen
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If you can cast this same slug consistently, you are steps ahead of a lot of us, that for sure.
Allen
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That's why I weigh and measure each one. I find using a hot plate to keep the mold temperature at around 350f helps give a more consistent diameter.
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Pressure pouring with a ladle using Wayne52's (may he rest in peace) technique gives very consistent results and accurate pellets and slugs.
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Nielsen use to make. 22 bt from 28gr to 40gr - in 216 . they worked awesome in my condor that at the time he started making them was practically the only gun that could push the .. I still have like 4 sample slug left hoping that the waiting times at Corbin goes down so I could order my own die.
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Look up my airgun range channel on YouTube and he puts flat and dish bases against the boat tail.
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The data is easy to access. I get it I love talking to fellow shooters too but let's try and focus on what hasn't been solved?
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Yeah I've found a forced pour i think was called works best for me or direct pour they were calling it and also between casting I got a hot plate to keep my molds hot I'm getting better and it's getting better for shooting as well happy casting
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As far as boatails in .510 Caliber a 650 grain spire point boat tail is very accurate...It has a B.C of around .5 ....The other slugs i shoot are usually a gas check design without gas check..They shoot..my theory in airguns is less bearing surface the better..
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You’re saying that you compared slugs of equal weight and the boat tails were running faster than the flat or dish base? I also am confused by your last statement. More power with less energy? What do you mean by that? Energy and power more or less refer to the same thing. What were you referring to? Also I’m pro boat tail but they really excel at long distance shooting. They take a second to stabilize when they leave the muzzle. I’ve not had a chance to test any boat tails out of My V3s yet. They’re just too long. I have some Griffin 73 grainers and they’re just too damn long for the breech. You can see in the photo how much longer a boat tail is compared to a dish or flat base.
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Less bearing surface, so it has less drag on slug going through barrel. However more speed does not mean it shoots better.
Allen
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With less bearing surface and less drag you get more speed out of the slug and the gun has to use less energy to get the same speed from a boat tail vs a flat base of the same weight.
I have started playing with the boat tail slugs again. In my RTI Mora in .357 it loves the Griffin 135 boat tails. It shoots them much better than the flat base slugs.
My Evo .30 also shoots the boat tails slugs very well. Only issue is they don't feed out of the magazine so I don't shoot them.
I have started playing with the boat tail slugs again. In my RTI Mora in .357 it loves the Griffin 135 boat tails. It shoots them much better than the flat base slugs.
My Evo .30 also shoots the boat tails slugs very well. Only issue is they don't feed out of the magazine so I don't shoot them.
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