Recent content by tghaines

You can use pellet drop or POI drop over distance to get the speed too. This assumes a set ballistic coefficient. I'll try to find some info on this and post it, but iStrelok can do it for you. I use the Chony as a start point and the iStrelok after that. Note - I'm still trying to find time...

I had my .30 cal pellets JSB 44.75gr doing 850fps. That about what Ernest started at. I'll check the power as is, then do the mod also. Thanks guys

I'll try my .30 cal barrel when I get back in a few days. That should isolate the o-ring I guess. My local warranty repairer has a 3 week turn around due to their location.....but better have a working gun than not eh? Thanks, Trent.

Thanks Utahairgun, The reg pressure looks about the same at 140 (or a needles width under 150), so I think that's ok. I'll take a look over the cocking linkage and see if anything is loose. Nothing is rattling, but good tip anyway. I have no problems re-adjusting it again. The adjust ability...

Hi Everyone, Loving the forum and loving my FX Impact. 1. I had my Impact tuned for exactly 900 fps with .22 JSB 18.13 pellets. Over a 2 week break, I seem to have lost 100 fps with the same settings giving me around 800 fps. I've been reading the forums and it seems that "9 times out of 10"...

Hi Guys, The FX Impact has finally hit Australia with me getting my hands on a Back with .22 and .30 barrel sets. There are a few differences with no shrouded barrel or moderator - due to our local rules. Also in New South Whales, I have to have each barrel set engraved with a serial number...

Hi Chris, Have you sorted/graded the pellets. I found that made a big difference on all pellets. Unfortunately there is some money to be spent. I got a pelletgage from the states (http://pelletgage.com/). It was ~$85 bucks, and also a really good set of digital scales form RS Components (the...

Hi Strikey, Yes, I am an engineer. I'd rather be out hunting, but getting access to properties is really hard around Sydney, so nerding out is all I have at the moment. The Measurements are in mm so the smalles group is 12.257mm or about 1/2 and Inch. the inside of the 8 ring is 25mm just for...

Beware - Contains massively unhelpful Nerd data. I made it to the range and the conditions were perfect. Not a breath of wind, mild and a little humid. 50 Meters Outdoor Benchrest. FX Royale 300 .22. Bipod and rear sandbag. I had my measured an weighed JSB 18.1 in a box and my H&N Baracuda...

Thanks Harry, I really appreciate the support. Is there any point in removing my barrel and manually pushing pellets through. I have read a few people trying that to see what impact there is on differing pellets. It seems there are just 3 grub screws holding the barrel in place. I think I can...


Thanks Harry, No I haven't measured the ID of the barrel. I assume there is a correct tool for measuring the ID of the breach (my standard calipers wont get in there). Otherwise the barrel has to come off.....I'll have to google that one. I have read lots of your other posts and I'm learning...

More updates...... Shot a 10 shot string of 5.53mm 20.8gr H&N Baracuda Accurate Heavy with a Stand Dev of 2.378 844 843 837 844 843 839 841 843 843 844 I'd say my pressure regulator is OK. I used these pellets as they are sorted and on the fringe of my sorted tin.....and I had 10 of them...


Hi Chris, Here are some groups from last week. FX Royal 300 .22, Regulated, 50m Outdoor Range. This first group was the first of the night and I was happy with that. It was with H&N Baracuda Accurate Heavy 21.14gr. They had been weighed and caliper measured into a set of 7. These last...


Well, that's part of my concern.....what if my barrel only like 5.54 pellets. They are hardly common. I do have a FX Impact on order, but the barrels come from the same factory so I may have the same problem. Are there "big" pellets out there? I thought JSB were some of the biggest?

I think I got the photos sorted.....