.30 cal Marauder rifle

[HillGSA]

Was a 17 lb tried? Or would that be too much?
On the .25 it seems to work very good in the marauder?

FANG

I only use 12.5 or less in my Marauder rifles.

[HillGSA]

Nice looking marauder.. light too! Do you know where I can buy that pistol grip for the marauder?

Thx

The grip stock adapter on the scales is a one of a kind. The other one can be purchased from Crosman.


For the grip itself, you can find them here:



For more information, you can check out the reviews.

[WHITEFANG]

http://www.gatewaytoairguns.org/GTA/index.php?action=dlattach;topic=92063.0;attach=127614;image

[PakProtector]

It isn't so much the .25 being more accurate. The .300 pellet barrel can deliver them quite well; it is just the .25 King Heavy should have less drift due to the 20% improvement in BC. That the BSA tube works well with the Mk.i Heavies is just coincidental...LOL If it didn't I would be hunting another barrel.

On the spring, going much over 12.5#/inch is not required with a valve with stock throat/sealing diameter. Now if you start with a Gen1, 2263 valve and open its throat to .281 it may want more spring. The OE delrin valve does not like such big throats though. IIRC there is an off-the-rack 21#/inch spring available. I don't like the idea of trusting the OE sear with that kiind of pressure. A custom tool steel one would be of great benefit. O1 should be adequate, but A7 looks ideal... Harden, then bake for half an hour at 500F to temper it slightly.
cheers,
Douglas

 Springs; 0.480 OD( scroll through to the right OD and 2.5" length, then pick weight by wire diameter) http://www.foxvalleyspring.com/docs/compressionSprings.pdf

[HillGSA]

It isn't so much the .25 being more accurate. The .300 pellet barrel can deliver them quite well; it is just the .25 King Heavy should have less drift due to the 20% improvement in BC. though - wouldn't you equate that to better accuracy ? ( unless shooting in a vacuum  ) That the BSA tube works well with the Mk.i Heavies is just coincidental...LOL If it didn't I would be hunting another barrel.

On the spring, going much over 12.5#/inch is not required with a valve with stock throat/sealing diameter. Now if you start with a Gen1, 2263 valve and open its throat to .281 it may want more spring. The OE delrin valve does not like such big throats though. IIRC there is an off-the-rack 21#/inch spring available. I don't like the idea of trusting the OE sear with that kiind of pressure. A custom tool steel one would be of great benefit. O1 should be adequate, but A7 looks ideal... Harden, then bake for half an hour at 500F to temper it slightly.
cheers,
Douglas

 Springs; 0.480 OD( scroll through to the right OD and 2.5" length, then pick weight by wire diameter) http://www.foxvalleyspring.com/docs/compressionSprings.pdf

I'm just not a fan of using a hammer spring with a rating any higher than 12.5#/inch - in a Marauder rifle. The extra cocking effort, accelerated wear and tear on the associated components, and the altering of the trigger pull, is not worth it. But then again, I am not going for the record   


By using my parts, I can get enough ACCURATE shots, with enough power for the task at hand, without stretching the Marauder platform beyond it's comfort zone.

[PakProtector]

I think the 160 fpe tune was done with a 15# spring. Not much to wear; the hammer seats in the tube and when properly lubed does not much harm. The bolt-to-breech is even easier to lube than the hammer; no need to worry about changes in viscosity changing delivered hammer energy.

With a valve big enough to make good power at high pressure there needs to be some serious energy to open it. However, switch back to pellets and tune it for a 90 FPE string with 44 gr pellets from 1900 to 1100 psi and it needs not so much spring anymore.
cheers,
Douglas

[WHITEFANG]

Not throwing the 17 lb spring at any one.
15 lb is so close to the 17.
As far as ware? Come on! Marauder replacements are cheap  and ready available.
No count of pellets down the pipe with the 17? Yes takes a little more effort to set in battery. But I find the 12 and 15 to be as difficult to cock and set in battery as the 17.
The marauder is not the most freindly cocking gun out there.  Easy to short stoke and double load from the factory.
Yes the more spring pressure the worse thing get.
But as any pcp the more hammer spring increase I find it as in a spring gun affects the trigger by design. Both put more pressure on the release of the trigger set.
That is a no brained on both spring guns and pcp. More pressure set to release. No different than heavy spring set ups in the trigger. You as the gunner has to overcome the pressure in that trigger finger.
All depends on the shooter and the knowledge  of the said gun.
Not after any record here! Just a lone wolf doing my thing.
Nothing I do or have may meet others expectations. Meets mine!💀