« on: March 29, 2009, 10:17:34 AM »
Last year I bought a Gamo 440 .177 new from Natchez. Had not shot it but a few times.I have done several mods on the Gamo S1K's and have been wanting to detune one and ad some bling... I started the tune by doing the regularly de burr polishing, and my normal prep work prior to re assembly. This time instead of using a Tarantula spring I had purchased several Merlin XL springfrom JM a couple months back and have been testing them. It was time to make myself a nice target shooter with using a stock Gamo barrel. I have two other S1K's that have L/Wrifled choked barrels on them. One is a .20 cal and the other is my favorite in .177 cal.I pulled off the front site and checked for the crown and no crown. so i prepared a nice crown on it. I put everything back together using the new prepped Merlin XL spring, stainless polished thrust washer and a slightly moded new top hat. Also used an unfinished GRT-III trigger I had thatCDT so generously donated to my project.
A couple days ago I waschewing the fat withmy buddy Shadow on the phone. We usually talk once a week just to keep tabs on each other..:) I had told him I sure liked the Gamo Hunter Extreme and the barrel shroud it had. But he did bring up a good point. What if the barrel underneath the shroud did not have a crown... hmmmmm No way to pull of that shroud with out screwing something up..:(
So I decided to make a shroud like the Gamo Extremeshroud for my Gamo Hunter 440.. And here are some pictures of the outcome.
I have probably put around200 pellets through the freshly crowned barrel and tune. Today when I was shooting her she started to come in with exceptionally nice 1" tight groups at 30 yards. Overall I am very happy with the results of the Merlin XLSpring. Instead of 900 plus fps she is steady at 800 fps with a very tight 5 fps overall deviation out of a 15 string chrony test. I have been shooting RWS Superdomes and I am gonna try out the JSB Exacts, Beeman FTS and CP's. Just trying to get the barrel seasoned and seal and spring guide seated first.

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THE ONES I SLEEP WITH: BSA Lightning XL, AA TX-200, AA ProSport, BSA Ultra, HW-97K, Crosman NPSS .177, FX Cyclone, HW-30 Nicle Plated, AA-S200, Crosman Marauder, CZ-634, R-9 DG, Webley/Scott UK Tomahawk, Benji Kantana, Benji Marauder, Benji Discovery.....
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Gene\'s Tunz n Toyz
Springer Tunin