FX IMPACT. 25 VS .30 700MM BARRELS

Considered getting the WildCat .30 with the 700mm barrel myself. I love the Wildcat body and I think it might be a good 75 and 100 m gun for EBR. But I would have to test to see how it works with my rest first.

IME 30 is a bit more accurate than 25 in 700mm

You need to check Ted's Holdover for an interesting perspective, he basically found that he could be get pellet with a better BC in a narrower caliber, which gave him a very accurate pellet on the impact platform, and also higher shot count for bench rest.

I have these 2 barrels but I need to get to my range with them to see how to best use them.

too many guns not enough time

I can't give any hard facts on the 700mm but I just put a 600 kit from a Impact on my Royale that was originally a 25cal. I've had a few groups at under .5" at 80yd but more often closer to .75" with the Heavies.

I haven't had any good opportunities yet to test the accuracy of the 30 vs the 25 at the same velocities due to the winds. One thing I did notice in Strelok and Chairgun is that the 25 shows over an inch less drift at 100yds with a 10mph, 90 degree wind. 7" vs 8.4". So the opportunity is there for the 25's to be more accurate in this respect. Hopefully though the 30cal will win out in the end regardless.

Jk

Glem Chally is going to give it a try

My bad, I didn't mean on my Royale, I meant my Crown. Was thinking one thing and typed another. But Tomiboy is right, Glemm is the guy to talk to. He's running a STX on his Boss receiver. He's just in a blind squirrel hunting so he needs something to do. Give him a PM and wake him up.

Jking

What about shooting .22 slugs at 1050fps? That would about twice the BC of a .30 cal pellet right?

Ok, hmm, I guess I don’t completely understand your particular scenario but if you want the best accuracy up to but not necessarily past 100yds, I would say .30cal is the better choice especially if you want that thing to slow down and drop as quickly as possible beyond that and the drag on the skirt of a pellet, especially a big pellet with a lot of resistance to aerodynamics, .30 is great.



As as far as “not possible, requires extreme mod(ifications)” goes, that’s what I’m doing with my $600 gun.... I hope your $2000 gun could do it 

My 600mm Crown 30 averages pretty close to your 600mm barrel guns (a bit less on average). At 75 yards though

Yeah you can put any impact or crown barrel into a Boss provided you use the crown barrel inlet (or modify impact one). And take the diameter from 14mm to 13.7 or so. .177, .22 and .25 use probe/delrin guide from Royale series. Mags from Royale can work too but need about 2 thicknesses of electrical tape below mag to make up height difference.

Oh but crown shrouded barrels might have an issue with air tank but impact ones work forsure.

Hi,

If you want to shoot the JSB King Heavy in .25, you should give a try to the special "B" pellet liner, either in 600mm or 700mm.

This is the special liner developed for heavier pellets.

Product code: 

FX19966-2 - 6.35 mm / .25, 600 mm
FX19977-2 - 6.35 mm / .25, 700 mm