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Umarex M1A1 Thompson - Ammo & question

Recently purchased the gun. Been using Daisy BB’s- no problem. Then tried Excite low ricochet and Gammo lead; both with idea to curb bounce back. Neither would chamber properly. Have Dust Devils and Hornaday Black Diamond- have yet to try either. Any feedback? Love the gun- play Combat episodes while shooting- hey I’m 70- returning to youth is great. Just like shooting my 1894’s while Cheyenne plays.

Also, for those that have them; between the Grease Gun and MP 40- both by Umarex- any preferences between the two and/or issues.

Finally; can you purchase the Butt Stocks for the Thompson someplace?

Thanks in advance.
I do have a solution for the hard screw in and removal for the M3 grease gun Co2 issue. I used Silicone Oil CST 350, that solved the problem as long as you remember to empty the Co2 (all of it) from the gun it works fine, like the other Umarex guns.
100% Silicone Oil CST 350 is a thicker Silicone oil with a viscosity of a 30 weight oil. Screwing the Co2 in and out is no problem, it just needed a thicker silicone oil.

AEA  AEA HP SS .25 Blowback Action in 960 FPS Slow Motion

so they update HP to SF.
You say need use correct pressure so SF adding regulator make the pressure not change.
You say use poppet valve. SF use new one.
You say need better magazines they have better CNC magazines.

Then you said AEA know it but do nothing?
I would buy another AEA pcp, they are receiving parts now. For the price range look at what they have. For accuracy they give FX a run for their money, Pro models for power, i don't think anyone can deny that one and constantly improving. There is only 1 or 2 other pcps that can equal that of the big 9 stock, it smokes the M357 , 30 cal long barrel Challenger is another power house just to name a few. Look where they started from and look where they are now. some of the Pcps from other makers are going for $ 2000.00 are you getting that much more? I dont think so, not from a hunting stand point.

FX  FX M3 22 my first PCP

Chukar,
amen to market bling! I’m leaning toward buying the rifle new with any trick installed by a reputable dealer, i.e. power block, Barrel tensioner, etc. if you were buying any of your M3’s again, what would you buy new in terms of tricking them out? It seems there’s quite an aftermarket in used bling at sufficient discount to make it and appealing proposition for such things as I might find appropriate, but I’m not generally a fan of hanging every available contraption on anything I care to use.. I hope you’ll reply to my question and I thank you again for your comment.
Edo.

My suggestion for any new M3 buyer is that no matter what you plan to shoot out of it, buy 1000 pellets and just shoot it. It will take that many to break it in and let it settle. Given a convenient air source you can shoot 1000 pellets in no time at all.
Then buy pellets in a couple weights. For example on 22 cal 18 & 25 gr pellets. You will need two different tunes for those weights. Then learn to tune the gun. An Impact is a poor choice for someone not willing to learn to tune. Rather defeats the reason to own one.
Once you have wrapped your head around tuning for pellets, move up to slugs if you like. It is not a big step. You will now have the foundation required to tune for slugs. You will understand the interaction between the hammer and the plenum. You won’t be on here asking about a tungsten hammer just because some YouTuber said it was a great idea.
Once you have attained that level of comfort with your M3 you can make an informed decision as to what aftermarket products would benefit you.
I am not anti-aftermarket. My needs from an Impact do not require them. I am against people people buying an M3 and then start hanging every accessories that they can off it without a competent knowledge of what it is supposed to and how to measure the actual benefit.

The Impact is the most hyped and over exposed air gun in the world. The same can be said for the aftermarket products produced for it.
Unfortunately, the preponderance of aftermarket products and the marketing and exposure have created two false narratives.
One: the Impact needs all of this to perform. No it does not
Two: all of this high performance stuff is simple and any moron can do it. No they cannot. Tuning takes time to understand. There is no shortcut to that reality. The higher the performance the More knowledge and experience it is going to take to achieve. Simply hanging goodies off your Impact and twisting and turning dials without a pretty thorough understanding about what is going in the gun will produce nothing but another FX hater.
Keep your expectations in the realm of reality. Don’t try to turn your Red Ryder into a 300 Win Mag and you will enjoy it.
Tungsten hammers and plenum pressures in the 170 - 180 range will beat your valve mercilessly. The gun will do it. but for how long and how reliably?

Mechanical or Electronic?

Keeping an open mind I would like to try the electronic trigger and the faster lock time of these platforms however I'm pretty sure my groups wouldn't improve as I'm satisified with my mechanical triggers, Daystate FX Taipan I'm good. Printed this 5 shot .3" cc group last evening with my Bobcat .25 six year old gun benched at 49 yards, (double checked the range) it isn't even my best trigger...Electric trigger...I doubt it!
I'll send it to you Bill...You know my feelings...lol.
In a PCP air rifle, assuming a proper stock and rest, and good trigger technique, any difference in results between lock times of any quality fire control systems is immaterial. I'm open for correction, but that's my story and I'm stickin' to it.
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AEA  25 inches between shots, not grouping

In October 2022, new JTS Airacuda Max .25 arrived from Pyramyd Air. Cleaned barrel with PatchWorm/Ballistol, installed scope. Loud clang and accuracy, similar to yours, resulted. Later determined installer failed to tighten stack bolt down on 5-piece baffle arrangement inside shroud between muzzle and end cap. Pellet deformed, after hitting loose parts, spiraling while attempting to self-stabilize which led to zero accuracy. WM

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