Inovairtech - MAC35

[dyotat100]

Yeah the only way to get lighter is to deck the mold. That is what was done to the NOE mold. It was a 85 gr bullet and now a 71 gr.

I know of one guy on the TAG forum that has a 58 gr Lyman. He is the one that decked the NOE mold. I talked to NOE and they will make a new mold just like what I have if I send them a couple of samples. I'm going to because it shoots so good and this is a borrowed mold.

[rsterne]

Not sure I'd want to deck the Lyman 257420, it would eliminate the gas check recess.... I think that is one of the reasons it shoots so well....

Bob

[airgunwarriors]

Al, the Lyman 257420 casts at about 74 gr. in pure lead (as a solid), not the 65 gr. it is advertised at.... It shoots well in many .257 cal airguns....

Bob

As I mentioned before, based on all that I have learned about air-gun boolits, the closest you can get to pure lead the better, so yes, these will be 74-grains as you stated. I can live with that and hope that the MAC25R can deliver.

Just finished checking out all of the links I posted on the previous page of .257 mold sources and here's what I learned:

Hoch: Put it on paper and they will make it, but it will cost you, as is to be expected for quality custom craftsmanship I guess. They will make single, double, quad, etc molds.

Lyman: If I'm not mistaken, Lyman offers the lightest and one of the more popular .257 boolits with the 257420 mold and the price is reasonable. Pretty sure it is a 2 cavity mold.

RCBS: If I am reading the site correctly, they offer a 50-grain .257. The code is .25-50-RN 251, the price is 126.95 and it does not say how many the mold makes or what exactly is available...no pictures either.

NOE: They have a few to choose from in the lowest I could find of 80-grains. Prices are reasonable and it looks like you can get 2 and 4 cavity molds. I guess the only way to make these lighter is to go HP or not use 99% pure lerad, and I am pretty sure we want to use the soft stuff.

LBT: Looks like the lightest one they make in .257 is 80-grain, cost is above the $100.00 mark and selection looks good. They also offer multiple cavity molds.

As mentioned before, for me it may have to be the Lyman 74-grain 257420: http://www.lymanproducts.com/lyman/bullet-casting/select-mould-rifle.php?styleRef=cat02#anc

Or

If I could get a mold that makes the NOE 67-grain HP boolits, that would be nice too. I will have to ask Doug where those molds are available at.

I also need to find out the details about the RCBS one that I think is a 50-grain: http://shop.rcbs.com/Products/Bullet-Casting/Bullet-Moulds.aspx
.25-50-RN 251

Will get it all figured out at some point.

Thanks Bob,

Al.
(AGW)

[airgunwarriors]

Yeah the only way to get lighter is to deck the mold. That is what was done to the NOE mold. It was a 85 gr bullet and now a 71 gr.

I know of one guy on the TAG forum that has a 58 gr Lyman. He is the one that decked the NOE mold. I talked to NOE and they will make a new mold just like what I have if I send them a couple of samples. I'm going to because it shoots so good and this is a borrowed mold.

Lots of options out there, that's for sure Doug, thanks for sharing that information and please keep us posted as to the progress of you having NOE do that decking for you.

Bob, I'm just hoping the MAC25R will like the Lyman 257420 just the way it is.

Thanks,

Al.
(AGW)

[airgunwarriors]

http://www.jdsairman.com/TanksRegs.html

48 cu. in. 3000psi input / 1000psi to 3000psi regulated output = $107.00 

Was thinking this would make a great compact field carry re-fill bottle for the MACs. Should get 70+ fills from this compact bottler.

I would much rather be filling to the max rating of 4500-psi for better performance though, so I have got to get that figured out too.

Thanks,

Al.
(WGA)

[dyotat100]

The rcbs is a .251 and  not .257.

I will get a couple of samples to NOE so they can make the 71 gr bullet I have. You can lose another drive band and it would be lighter also.

[rsterne]

The RCBS is a .25 ACP bullet, it is a round nose, and is too small for a .257 cal barrel.... It can be used in .250 cal airgun (pellet) barrels, however.... I have one, it casts at just under 53 gr. in pure lead, and the hollowpoint version is just over 46 gr.... My .250 cal, 52 gr. Bob's Boattail from LBT shoots better.... the mold number is #25-52-BST.... I have plans for a 63 gr. version in .257 cal, same bullet, just longer, and sized for the .257 size barrels.... It will require a 14" twist barrel, however, which is available from TJ's....

Bob

[rsterne]

Al, you can't fill to 3000 psi from a 3000 psi tank.... A 48 CI / 4500 psi tank will give you about 33 fills of a 10cc cartridge to 3000 psi, starting from zero....

Bob

[airgunwarriors]

The rcbs is a .251 and  not .257.

I will get a couple of samples to NOE so they can make the 71 gr bullet I have. You can lose another drive band and it would be lighter also.

Will they not make the mold for you/us so that it makes 71-grain boolits?

Thanks,

Al.
(AGW)

[airgunwarriors]

Al, you can't fill to 3000 psi from a 3000 psi tank.... A 48 CI / 4500 psi tank will give you about 33 fills of a 10cc cartridge to 3000 psi, starting from zero....

Bob

I see now, o.k., thanks!

Think I might better get this one instead for more re-fills: 62 cu. in. 3000psi input / 1000psi to 3000psi regulated output
(with the 4500-psi filling abilities so that I can fill the 10cc MACs to 3000-psi)

Thanks,

Al.
(AGW)

[EDIT]: Thinking the 62ci might be to big for field carry use, so I would just stick with the 48ci bottle instead...with the abilities to fill the 10cc MACs to 3000-psi.)

[airgunwarriors]

The RCBS is a .25 ACP bullet, it is a round nose, and is too small for a .257 cal barrel.... It can be used in .250 cal airgun (pellet) barrels, however.... I have one, it casts at just under 53 gr. in pure lead, and the hollowpoint version is just over 46 gr.... My .250 cal, 52 gr. Bob's Boattail from LBT shoots better.... the mold number is #25-52-BST.... I have plans for a 63 gr. version in .257 cal, same bullet, just longer, and sized for the .257 size barrels.... It will require a 14" twist barrel, however, which is available from TJ's....

Bob

Let's just hope that the MAC25R stock barrel will like them too.

Al.
(AGW)

[dyotat100]

The rcbs is a .251 and  not .257.

I will get a couple of samples to NOE so they can make the 71 gr bullet I have. You can lose another drive band and it would be lighter also.

Will they not make the mold for you/us so that it makes 71-grain boolits?

Thanks

Al.
(AGW)

Yes they will make the mold at 71 gr  but they need a sample to get the length right.  They just make it shorter by not putting the cutter as deep.  Will get some in the mail.

[airgunwarriors]

The rcbs is a .251 and  not .257.

I will get a couple of samples to NOE so they can make the 71 gr bullet I have. You can lose another drive band and it would be lighter also.

Will they not make the mold for you/us so that it makes 71-grain boolits?

Thanks

Al.
(AGW)

Yes they will make the mold at 71 gr  but they need a sample to get the length right.  They just make it shorter by not putting the cutter as deep.  Will get some in the mail.

That's extremely awesome!

Thank you very much.

So, now I have 2 possible lighter in weight .257 boolit molds to choose from or get and hopefully Bob's will be a third.

Respectfully,

Al.
(AGW)

[Monkeydad1969]

Here is what I have in .257

The .257 is really amazing in the condor when done right. Out of the 4 condors I have I would have to say the .257 is the one that impresses me the most. .30 is just as impressive but as a pellet shooter.
 
I went prairie dog hunting last month. I shot one at 190 yds and one at 292 yds with the .257.

I also have a .308. It is a little on the violent side because of the recoil. Works good but has to be held right to keep it from jumping.

Any chance of getting the specs and mods on your .257?

Joe

[dyotat100]

It is all custom. All I use from AF is the frame, fore grip, and 2 of the 3 trigger pieces.

32" TJ's 1:14 .257 machined to .374" at the breech
Large barrel bushing that fit barrel and frame perfect
My custom valve
150 gram hammer. Hammer cocks the gun
13 lb hammer spring
super sear from AoA
62 ci tank, adapter with fill nipple and gauge
Custom trigger guard and AR-15 grip
5 piece all aluminum shroud supporting barrel at the frame end and end of barrel

Anything else?  The gun is pretty quiet. Mostly mechanical sound now.

[airgunwarriors]

It is all custom. All I use from AF is the frame, fore grip, and 2 of the 3 trigger pieces.

32" TJ's 1:14 .257 machined to .374" at the breech
Large barrel bushing that fit barrel and frame perfect
My custom valve
150 gram hammer. Hammer cocks the gun
13 lb hammer spring
super sear from AoA
62 ci tank, adapter with fill nipple and gauge
Custom trigger guard and AR-15 grip
5 piece all aluminum shroud supporting barrel at the frame end and end of barrel

Anything else?  The gun is pretty quiet. Mostly mechanical sound now.

"Hammer cocks the gun".

Is that the slotted part on the right side, you can see a spring in the slot or groove just forward of where you would normally cock and load an AF?

Looks preety cool.

Thanks,

Al.

[dyotat100]

Yes

It makes it so you can use aluminum breech also. The breech is just open and close. The .308 has aluminum breech and the .257 will sooner or later.

Next is to make them all like my .30. Replace the scope rail and cap the frame. 

[Monkeydad1969]

Thanks...that is a nice looking AF and those are some serious mods.

Joe

[dyotat100]

Thanks

The .30 is really accurate out to 125 yds. Not sure how much all the stiffening plays in how good it shoots.  It shot under a dime size group at 50 yds the time I took it to the range.

.257 without shot a 100 yds under a dime size.  So hopefully that will improve when all is done.

[Monkeydad1969]

Thanks

The .30 is really accurate out to 125 yds. Not sure how much all the stiffening plays in how good it shoots.  It shot under a dime size group at 50 yds the time I took it to the range.

.257 without shot a 100 yds under a dime size.  So hopefully that will improve when all is done.

Where did you buy the bottles from and what valves are you using?