Slug accuracy thoughts

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Vetmx said:
What you just described is very very common. I doubt anyone is making videos about day one high fives and fist bumps. Then day two profanity and bewilderment. Everyone wants to look like they walk on water in their little videos. Looking dumb just doesn’t sell guns and slugs. But unfortunately the temperamental side of slugs videos would be far more helpful. Just no money in it.
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It would be great if someone could explain why the grouping with slugs changes even when the tune is the same.

I found it hard to believe that weather affects it that much, because I live in a tropical country and the weather is relatively the same from one day to the next, unless the season changes, which happens every 6 months.
 
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bowopt said:
It would be great if someone could explain why the grouping with slugs changes even when the tune is the same.

I found it hard to believe that weather affects it that much, because I live in a tropical country and the weather is relatively the same from one day to the next, unless the season changes, which happens every 6 months.
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There are quite a few factors. And the more complex the gun, and the barrel, you can add a couple more factors. But sometimes it’s just the obvious. Your tune wasn’t what you thought it was. Some guns walk a very fine line of being on point. Other guns can shoot well when not exactly on point. They have more wiggle room. What gun did you choose?
 
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I think barrels with the right twist rate for slugs shoot slugs good, I also think guns made for pellets with the right twist rate for pellets shoot pellets well.
I also think we need to stop and say , This is sold as a slug gun, and this is sold as a pellet gun,,, I think people trying to shoot slugs with there pellet guns is a mistake, There needs to be barrels made for slugs and made a SLUG gun, I think 100% that the twist rate for slugs is different for pellets . I also think if you have a 105 dollar wombat and you want to shoot pellets and slugs and BBs at coke cans at 25 yards its OK..

Mike
 
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I shot slugs with my FX Wildcat .22 using the Heavy liner with 27 gr HP Slug. The issue with the group changing, although the tune remains the same, persists. This happened, too, when I was shooting with FX Dreamline .177. Although the barrel wasn't the Heavy, it suffered the same issue where the tune shot good groups on the day it was tuned, verified by 10-shot groups multiple times before retiring the gun for the day. The next day, the quality of the group can shift. This is what's puzzling me with slugs. I would like to know what others' experiences with tuning slug and with this issue.

Regarding calling an airgun a slug or pellet gun, I agree that it can be confusing because it depends on what slug and tunes the shooters shoot with. But slug is here to stay. I'm thinking of learning as much from you guys about it. Honestly, slug is addictive. :)
 
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Vetmx said:
I wouldn’t put the things you watch too high up on a pedestal. You are watching the minutes or seconds of hits, not the hours of misses that don’t make the final video.
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You speak from experience,lol Me too. Being able to shoot long distance 100-200 and more yards consistently I use 308 Texan and big 9, 106gr and 132-140ish gr and a lot of misses.
 
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Many Utubers selling placebo with their MOA claims without ever shooting hundreds of slugs or pellets a week after weeks... Try shooting multiple rings instead of groups and that is a benchmark what you and your airgun can do. It will be an eye opener for many what % MOA you can get averaging per 100 shots or per weeks for example. Hunters welcome to keep quiet with your minutes of headshots accuracy

Edit: I didn't meant to offend anybody, just thinking out loud
:)
 
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bowopt said:
In my experience, sometimes I thought that I had found the magic tune where the slugs were shooting one MOA. And the group changed the next day. I don't know why that was. But I do like slugs because it is finicky and I like tuning. It feels good to find a tune that works, even if it's only for a day. :)
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OH HELL YEAH! What he said!! Same for pellets, mag after mag nice tight groups then....a WTH what happened, slugs are worse but when they work, they work. I've had pretty good luck out of my (now) Maverick .25 sniper with RMR/FX Hybrids at 1100 fps, but I'm going to do something stupid and get a .25 600mm heavy 1:16 liner and ruin everything. Actually I'm going to build up a complete replacement so nothing get's messed with.
 
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dens228 said:
For the most part with my M3 700 mm barrel, 25 cal I shoot RMR slugs at 988 and get very tight accuracy. Then one day I'll have 3/4 inch groups at 35 yards and I'll be wondering what's going on. The next day back to tight groups again.
My pellets are spot on every time.
It's hard to beat that thud sound of slugs expanding in a pest though.
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This is common also. Guys just don’t talk about it. It seems a lot of guys would rather try to buffalo the masses into believing they have a MOA all day every day gun. Most don’t.
 
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Vetmx said:
This is common also. Guys just don’t talk about it. It seems a lot of guys would rather try to buffalo the masses into believing they have a MOA all day every day gun. Most don’t.
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My first go with trying slugs last year I had a lot of inconsistency in groups. I was trying the standard FX liners with hybrids since they are suppose to work with lighter weight slugs. Mine never did or at least not consistently. This time around I got the 16 twist .25 liner and the 16 twist .22 slug liner. So far in 3 rifles I am getting consistency with my slugs. I have shot them in different locations, elevations and huge temp differences and no wandering or consistency issues. I cant say why or if it will stay but so far I am finally happy with my slug setups.

I find it strange that consistency can be so hard to keep using slugs in airguns. I have ran my setups thru stabilization calculators and they are all comfortably above 1.5. I cant say for other people and their setups and I do know that some people having the issues are above 1.5 based on speed and slug used so thats not the issue at least with some setups. The ES and SD numbers in pcp can be very tight and still get inconsistency issues. So thats not the answer or issue in some setups. One thing I did do with all of my slug setups and now my pellet setups was changing the type of mod I use. I switched to reflex style mods. Theres only about 3" past the muzzle on my reflex mods. We cant discuss designs or particular detail about mods but I changed a couple key parts that made a big difference. I feel like the changes to the mod and using the fastest twist liners especially the 16 twist .25 are two of the biggest reasons I am seeing better results. I dont have the answers I just know that changing the liner and mod made a big difference and its been working for me so far.
 
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dens228 said:
For the most part with my M3 700 mm barrel, 25 cal I shoot RMR slugs at 988 and get very tight accuracy. Then one day I'll have 3/4 inch groups at 35 yards and I'll be wondering what's going on. The next day back to tight groups again.
My pellets are spot on every time.
It's hard to beat that thud sound of slugs expanding in a pest though.
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That sound of thud motivates me to persist in tuning for slug, no matter how frustrating it can sometimes be. Nonetheless, it's good to hear that I'm not alone.

Just an update on what I have done since that last session:

- Applied on the hammer adjuster screw a bit of purple Loctite. Just in case the hammer strike backed out the hammer screw.
- I changed the hammer spring with the tougher Huma's to give it more power because I feel my 12-gram hammer weight and the original FX spring have maxed out at the set reg pressure, around and about 140ish bar.
- I filled up the gun to 200 Bar and am currently waiting to see if there's any sign of reg creep and leaks.

I will tune the gun again soon.

Wish me luck! :)
 
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