A drop in 350spring is available over on JM's "Todays Specials" page so they probably won't be around for long. He also has had a full power and a soft tune kit for the 460 available for a while, if you didn't already know..
Are you going to try one,i'm thinking about it, to have for spare.I would imagine it's full power thou,I'm shooting mine quit a bit to wear it down to get a scope,had mine apart and wow there was a lot of lube in it,cleaned it up and put velocity tar on the spring and it is really smooth now,have some heavy tar on the way thou.
As soon as I saw it listed there this morning. I figure even if it's months till I get around to installing it, at least I got it. Sometimes JM's parts are few and far between. Then again if there is a good demand he may make it a regularly stocked item.
sometimes you figure you can skip it, but then he never makes another run of those springs. Other times you buy so you won't lose out, and then its a regular item available anytime.
I got one for future use since my 22 cal 350 is shooting much smoother already after a simple lube tune and settling on Kodiak pellets. I haven't bought a 460 kit yet because of too many other projects on the front burner..
DanB
I vote for this spring but on good guides as well. This Artic spring is nice. Fitted on all steel guides fitted 0.0005" under ID of spring. Full power Monolith kit as sold on Specials a while back. Here it is compaired to the original spring and guide.
I also buttoned the piston and replaced the seal and added screw cups.
The cup kit. I have them on 2 HWs and 2 RWS guns currently.
Installed cups on my 36.
I am using a williams peep on it.
Look what happes to the screw holes without cups and kept tight none the less.
Is the 350 Artic spring a JM spring? Is this the less powerful spring and the Monolith is the full-power spring?
Which 350 spring is on sale by JM this week? Did someone say they are gone already? I read somewhere the JM 350 spring makes it lose a couple of foot-pounds. Does he sell the guides too or just the spring? I 'll have to go take a look.
Artic is the name Jim gives to a new line of springs he makes and says the A.R.T.I.C. stands for the process involved in prod. So far he has not said more but these springs are the bomb in my relatively inexperienced view. I was lucky and got a guide/kit w/Artic spring for the 350 that he made and put up on today’s special back a few months ago. He did not have any up since. I do not do extensive crony tests but I did test the gun after tune for records. I only remember that it is over 21 fpe using CP's or H&N-FTT's that are my 2 preferred pellets in this gun. I don't know how each individual interprets full power as some equate this to THE MOST FPE Possible on any spring. I don't care and love the gun as it shoots with this kit. It might be that full power is the most feasible without being too harsh or whatever. I just know that it IS better. Shoots, sounds, cocks, and feels better overall.
Sorry to correct this but I remembered incorrectly when typing the post above in place of H&NFTT I should have put JSB 15.5 gr. instead as I was probably thinking of another gun by mistake. I do remember that there was less thank 100fps difference though and the variance in CP's lately can account for that alone. I long for the days CP's had better QC. Alas my R7 and HW50s and HW95 all did the best with CP's in their respective cal. but the latest CPs' have fallen short on quality. Most have been so undersized that they fall into the breach vs. before needing to be pressed in.
for the info Kevin! I e-mailed JM too and asked him if we can just order the kit at anytime and what power should we expect from this kit, etc.
I 'm lucky I have not encountered that problem with CP's which I bought in September, manufactured 5/30/07. They all a nice snug fit and I have to push them in. I did have a few flyers on paper and found a couple with bent skirts which I through away. Bent skirts is unacceptable to me and I have not found any other Beeman or JSB Exacts with altered skirts in all my tins. But for the most part I have not run into any "smaller" CP's and the chrony test I did with them (shot 20) was with about 15fps difference, mostly in the 850's. I did have one that shot 870fps and 2 860fps when I shot the gun cold - for the first time that day, but after that most of them settled in the 850's with 2 of them in the 840's. So my 350 is a solid 23FPE with the CP's, which I think validates what I 've read in other forums that the JM kit for the 350 is a slightly detuned kit of ~2FPE. I 'm sure the difference is immense though! Thanks for sharing that info with us.
Harry
PS.
How is the JM kit with the JSB Exact 15.8gr (or 15.9 I think they are). Is that the other pellet? Mine averages 799fps (802.x max) for ~22.5FPE. Extremely consistent with only like a 7fps spread.
I just asked him if his kit produces OEM power, nothing more. I know about that article. I read it a while back and I posted it here but I think he 's changed his mind. Look at the 460 - he 's making a "full power" kit and a regular kit so I don't think he goes by that reasoning anymore.
A FULL POWER FOR the 460? A kit or spring? What is this all about?
Find out.
PPPLLLEEAAASSSEE
that is your assigment, later on you can call the chips on me. I cannot do it on the 460 because I am biased on the 460 and will read STEROIDS for the 460.
warren
and remember "it's 30% the gun and 70% the shooter"
It's the GRT kit that says "High Power kit".
JM also makes a "soft kit" he sells that says "moderate-high power to soften down the gun some"
Just go to www.airguns.citymax.com and click on Tune Kits. Then go to the bottom and you 'll see the last 2 kits are for the 460. They both include 2 guides and a flange with some sample tar. I don't want to keep bothering him. He gets flooded with e-mails. I doubt I 'll get a reply on the 350 springs. I think unless you put in the subject line "want to buy or place order" you are not getting a reply.
Warren, you missed the boat on the 460. MidSouth had them for $440 for the last several months. Now they went up to $520 and they 're out of stock.
MidSouth raised the prices on ALL the Dianas. I think Umarex has raised the prices for '08 and any vendor ordering a new shipment is paying more. Plus I 'm sure it has to do with the value of the dollar falling more against the Euro. PA still has them for $489 but I 'm sure once they run out, the new stock will cost more.
He may still be glowing from his positive impression of the 34 Panther, or maybe he doesn't place the 460 in the same "highly stressed factory rifle" category as the 350, I'm certainly not qualified to speak for him, though..
