Slug velocites.

[Motorhead]

No matter the speed your Barrel / Slug combo prefers, faster you go, while slug may like more speed, guaranteed your barrel does NOT !!
Soft lead is VERY prone to leading up a barrels bore & speeds above 850 or so will become worse & worse faster you go.
Yes many do, self included ... but keeping the fouling in check becomes part of the regiment if slugs is what your only shooting.

Many of us come from a background using firearms and know this all too well

 

[Amwolf]

How many here shoot .30 cal? Looks like most people are shooting .22 or .25

I am new to Airgunning, and wanted to get in to long range, so I went with a .30 cal for the potential downrange energy, but am having a hard time finding much info on .30 tuning. Maybe I should have gotten a .22 .... haha

 

[Scotchmo]

How many here shoot .30 cal? Looks like most people are shooting .22 or .25

I am new to Airgunning, and wanted to get in to long range, so I went with a .30 cal for the potential downrange energy, but am having a hard time finding much info on .30 tuning. Maybe I should have gotten a .22 .... haha

Not exactly .30, but bigger than .25. Some custom builds: .308, 7mm, and .257. Also working on a 6.5mm.

Max velocity where I’ve had good results is 1060fps. I feel that 1020 to 1040fps is a safer bet as the max in most cases.

Actually, even slower (<1000 or <900fps) can be better in some instances. Optimal velocity depends substantially on your ELR distance.

 

[kitkat2013]

69

 

[Amwolf]

Not exactly .30, but bigger than .25. Some custom builds: .308, 7mm, and .257. Also working on a 6.5mm.

Max velocity where I’ve had good results is 1060fps. I feel that 1020 to 1040fps is a safer bet as the max in most cases.

Actually, even slower (<1000 or <900fps) can be better in some instances. Optimal velocity depends substantially on your ELR distance.

Thank you. I was hoping to set it to 1020 or around there, obviously it will be dependent on what slugs I use, because accuracy is what is most important to me. I have a chrono on order, so come spring ill be working on a tune. We shall see!

 

[greenbeans]

Would be sweet if we could build out a user experience based database here, maybe as a sticky. I know I know, every gun and barrel is different but having a list of based on cal / diameter / weight / barrel twist / barrel type / speed / distance with good results might be helpful to narrow the test range down a quite a bit… like it is common knowledge to not shoot Altaros too fast, just more systematic and in on spot. Cavedweller attempted something similar for ghost tunes with different barrels, pressure, springs and pellets - turned out to be very helpful for a lot of people, why not with slugs as well. Might save us a couple of “at what speed should I shoot this slug” and “what slug for XYZ gun” posts…

 

[rigbymauser]

Daystate Revere .177 20 grain ZAN 570 ft/sec. 14,5 ft/ibs. @40 m pinkynail groups. @70m sub 2” groups.


22grain ZAN 22grain @686 ft/sec. 23 ft/ibs. @40 pinkynail groups. @70 1,5” groups.

The Revere in .177cal general shoots slugs well also of lighter weights. I just preferre to shoot the heaviest most useable. The ZAN 24grain doens’t do well. Lacks stability and perhaps speed but the Revere will push them out with no problem.

 

[wimpanzee]

How many here shoot .30 cal? Looks like most people are shooting .22 or .25

I am new to Airgunning, and wanted to get in to long range, so I went with a .30 cal for the potential downrange energy, but am having a hard time finding much info on .30 tuning. Maybe I should have gotten a .22 .... haha

i just got a .30 panthera recently. i'm starting out with 70gr slugs at 950. Had my first real outing with it today, i think i need to work on tuning it some more, was getting some wider than expected spreads (40fps). only at 160bar on the reg, i think i need more air on it, or less hammer, to stabilize the tune.

the 70gr are the ones shooting best from the limited selection i had. i ordered some heaviest nsa slugs to try out.

i have a .22 drs pro coming, it should be shooting 33gr slugs at 950fps.


it seems in my limited experience, a lot of guns like the 950+ range for slugs, OR shoot them well in the low 800s. my gk1 shoots some 28.5 gr slugs fantastically at 50 yards, at only 830fps.