New project: .177 slug gun

[KnifeMaker]

And for those that like a little more in depth info.


 

[KnifeMaker]

And lastly---

[rsterne]

Cedric is DA MAN when it comes to long range pesting…. If I was ever going to build a .17 cal, I would copy his build, and use the same bullets....

   http://noebulletmolds.com/NV/index.php?cPath=102_440



He had the mould hollowpointed by Erik at Hollowpoint Mold Services.... It is obviously a DEADLY combination in the TJ's 9" twist 0.172" barrel.... Note this bullet will NOT work in a standard .177 airgun barrel, it is too large in diameter, and too slow a twist rate....

The bullet is a scaled down version of the excellent NOE 225-61 FN (RCBS 22-055) which is about 58 gr. without gas check....  http://noebulletmolds.com/NV/index.php?cPath=24_113

Bob

[nielsenammo]

I have a mandrel being made for the .177 with 9 twist.  TJ will have the mandrel at some point.  The mandrel has been made twice and has not met spec either time.  I guess the small mandrel is hard to make.  They charged me a lot of money to make this mandrel too.  Mike from TJ's said they are making it again (third attempt) so I have to continue waiting.  I wait like 2 months for each attempt so we will see if I get this mandrel before I die.

[KnifeMaker]

Cedric is DA MAN when it comes to long range pesting…. If I was ever going to build a .17 cal, I would copy his build, and use the same bullets....

   http://noebulletmolds.com/NV/index.php?cPath=102_440



He had the mould hollowpointed by Erik at Hollowpoint Mold Services.... It is obviously a DEADLY combination in the TJ's 9" twist 0.172" barrel.... Note this bullet will NOT work in a standard .177 airgun barrel, it is too large in diameter, and too slow a twist rate....

The bullet is a scaled down version of the excellent NOE 225-61 FN (RCBS 22-055) which is about 58 gr. without gas check....  http://noebulletmolds.com/NV/index.php?cPath=24_113

Bob

Humm, wonder how a Rainstorm II .25 would respond to a .172 build? Hummmm!


Cedric is always chasing the leading edge, or setting it. such a shame we lost him here on the GTA. A real loss for those interested in longer range hunting and AirGunning in general   As nice a person you will ever know. We've been friends for many years now. 


Knife

[Hobbyman2007]

“Cedric is always chasing the leading edge, or setting it. such a shame we lost him here on the GTA. A real loss for those interested in longer range hunting and AirGunning in general   As nice a person you will ever know. We've been friends for many years now.  “
I’ve been wondering where he went . My ideas where he’s hanging out these days ?

[Motorhead]

Pushed aside a no rush project for a stab at this .177 magnum stuff 

JSA / SS valve with .039" air bleed,  20 gram hammer with an attached SSG having @ 30 grams total weight, Transfer path throat to barrel @ .170" with elongated barrel port, JSA aluminum air tube, Hogged out gauge manifold topped with a Hill depinger.   3k fill on board.  O' and a factory Crosman .177 barrel.

JSB MONSTER 13.43 grain = 1048 / 1050 fps for 32.8 ft lbs 
H&N SNIPER MAGNUM 15 grain = 997/998 fps for 33.1 ft lbs 

Yea, I'm gonna need some slugs !
Accuracy testing next.

BTW, the gun fires STUPID stupid stupid quiet ... just crazy

[Dairyboy]

Pushed aside a no rush project for a stab at this .177 magnum stuff 

JSA / SS valve with .039" air bleed,  20 gram hammer with an attached SSG having @ 30 grams total weight, Transfer path throat to barrel @ .170" with elongated barrel port, JSA aluminum air tube, Hogged out gauge manifold topped with a Hill depinger.   3k fill on board.  O' and a factory Crosman .177 barrel.

JSB MONSTER 13.43 grain = 1048 / 1050 fps for 32.8 ft lbs 
H&N SNIPER MAGNUM 15 grain = 997/998 fps for 33.1 ft lbs 

Yea, I'm gonna need some slugs !
Accuracy testing next.

BTW, the gun fires STUPID stupid stupid quiet ... just crazy

Very nice! Excited to see what you come up with! I agree shooting mine you'd think it was a standard .177 in the 18fpe range it's crazy. Even when shooting 50-60fpe out the .22 same thing thought It was a standard .22 power from the noise.

[screwwork]

Looking good Scott and Dillon!
I cannot wait until I get home to play with my .177 Cal Prod.

[skorec]

Pushed aside a no rush project for a stab at this .177 magnum stuff 

JSA / SS valve with .039" air bleed,  20 gram hammer with an attached SSG having @ 30 grams total weight, Transfer path throat to barrel @ .170" with elongated barrel port, JSA aluminum air tube, Hogged out gauge manifold topped with a Hill depinger.   3k fill on board.  O' and a factory Crosman .177 barrel.

JSB MONSTER 13.43 grain = 1048 / 1050 fps for 32.8 ft lbs 
H&N SNIPER MAGNUM 15 grain = 997/998 fps for 33.1 ft lbs 

Yea, I'm gonna need some slugs !
Accuracy testing next.

BTW, the gun fires STUPID stupid stupid quiet ... just crazy

Nice power ,

-   My ONE-T ( clone of CONDOR )  with .22  air transfer way and 3500 PSIr regulator shots 21gr Piledriver at 950 FPS .I am filling new bottle ( WP:300bar, TP:450bar ) at 3600PSI.
-   My Puncher mega shots 21gr Piledriver with .16 oblong transfer port and  SS balanced valve  at 900 FPS near 3600 PSI.

In another world power I have solved. I am just now  resolving only accuracy.

Choked LW and polygonal LW barrel shot them unfortunately not better as  1,5*MOA  with 20% flyers and choked Weihrauch barrel   poorer.
I am still believe that some producer start to produce some faster TR. Do you have some info about FX liners ?

[KnifeMaker]

“Cedric is always chasing the leading edge, or setting it. such a shame we lost him here on the GTA. A real loss for those interested in longer range hunting and AirGunning in general   As nice a person you will ever know. We've been friends for many years now.  “
I’ve been wondering where he went . My ideas where he’s hanging out these days ?

Working long hours, 6-7  days a week. 

[Ribbonstone]

That 1.5 to 2 MOA is about as well as I've ever got the 21gr.Piledrivers to average, and the one rifle that could manage that was not a power house....so pretty well limited use to about 50 yards.

Could get some of the rifles to make speed/energy, but couldn't get them to shoot well enough to be real useful....and if a heavy streamlined slug is going to be useful, it would be at longer ranges (are several"normal" pellets that work fine for ths shorter stuff).

We're in the length area that really seems to want a bit faster twist than standard .177 barrels.

[shorty]

Here's some .17  casts at a pretty good price.

https://shop.reedsammo.com/Cast-Bullets_c281.htm

[WeeHeavy]

Those look a little small for a .177 barrel. Betting those are for .172 HMR or similar. Might work in an airgun with a .172 barrel like Cedric's HMaiR.

[shorty]

Not if he knurls it.

When I run slugs in my choked barrel .25 marauder, knurling is the only way I can get any kind of accuracy and no feeding problems.

When you knurl, you can increase the diameter by .01" (high spots in the knurl) so that .172" slug could get as big as .182" when knurled against wood.

Just roll a knurling tool over the slug on a wood board. Super easy and fast to do.

[WeeHeavy]

Fair enough. I hadn't heard of that.

[Motorhead]

Here's some .17  casts at a pretty good price.

https://shop.reedsammo.com/Cast-Bullets_c281.htm

$30 for how many ... does not say anywhere i found

[Dairyboy]

Had to work today but tested the 21gr early this morning before work at 55yds and the groups are promising. Planned on more testing but winds are now 20mph with 30mph+ gusts so no more accuracy testing. Also I'm out of the 21gr so going to try the 18gr when the winds die down. Will find my target from this morning to post a pic.

[shorty]

100 27g .17 Cal (.173") Cast Gas Checked

100 32g .17 Cal (.173") Cast Plain Base

[Motorhead]

100 27g .17 Cal (.173") Cast Gas Checked

100 32g .17 Cal (.173") Cast Plain Base

Duh ... too much sun & fun today ... loopy !!

Thank you