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Spring/Piston Diana 350 Magnum - Best Scope

Definitely got mote choice now then a few years back .. I also was thinking about 10-15 g

I'd also hope maybe after a few 1000 after new that would relax a lot to go to a average everyday 10 g pellet .

I'd try Walmart and the crosman parhanas in it as well .. there 10g .

Seemed my buddy Zach has this gun and made a thread or 2 on his experience dealing with the overpower part of things like pellets and spring work .. there at gateway froums ...
 
Definitely got mote choice now then a few years back .. I also was thinking about 10-15 g

I'd also hope maybe after a few 1000 after new that would relax a lot to go to a average everyday 10 g pellet .

I'd try Walmart and the crosman parhanas in it as well .. there 10g .

Seemed my buddy Zach has this gun and made a thread or 2 on his experience dealing with the overpower part of things like pellets and spring work .. there at gateway froums ...

Too light of a pellet, oh no 🤦‍♂️ there go the seals! Too heavy, my God you'll destroy your mainspring! LOL! The Diana 350 Magnum springer with the T05 trigger is a monster and slowing down the projectile is mandatory in my opinion. Looking forward to shooting those 20gr slugs! Pew-Pew!
 
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Idk... If you could go with a softer spring or cut a coil or 2 . Maybe fit a new seal in a bit on the tight side.

Zack been popping in at agn off and on seemed like he did d find a nice compromise in his

Here's one of his posts from GTA. He's toyed around with his and maybe you can find something if you follow.

Diana 350 spring options? D48 spring... - Airguns & Guns Forum

You got a good gun but it's one to fine tune it to it's best sweet spots .. the .177 just needs a tad more tune finessing..

Once you key in to something you like it a great shooter you can like a lot
 
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Too light of a pellet, oh no 🤦‍♂️ there go the seals! Too heavy, my God you'll destroy your mainspring! LOL! The Diana 350 Magnum springer with the T05 trigger is a monster and slowing down the projectile is mandatory in my opinion. Looking forward to shooting those 20gr slugs! Pew-Pew!
My guy I've shot .177 springers my entire (shooting) life; 10 yrs old got my first crosman, 37 now and I still own 2 and shoot 4 of em(2 being 350s). I shot the heavy 10gr stuff through my weakest gun and you should have heard that poor main spring! Boouuuiinggg.. It was almost comical.... I was getting a replacement anyways so I didn't care. Seriously interested in whether the gun can even shoot those things without getting stuck, 20Gr is no joke in .177, keep us in the loop and chrony em if you can! 😉 If I think about it I'll chrony the 15gr outta my brother's tuned Diana....just for kicks.
 
My guy I've shot springers my entire (shooting) life; 10 yrs old got my first crosman, 37 now and I still own 2 and shoot 4 of em(2 being 350s). I shot the heavy 10gr stuff through my weakest gun and you should have heard that poor main spring! Boouuuiinggg.. It was almost comical.... I was getting a replacement anyways so I didn't care. Seriously interested in whether the gun can even shoot those things without getting stuck, 20Gr is no joke in .177, keep us in the loop and chrony em if you can! 😉 If I think about it I'll chrony the 15gr outta my brother's tuned Diana....just for kicks.

I got ya beat, 65 years young. I've been shooting since I was 5 on my grandpa's farm in Tennessee. First gun I shot was a 1911, my dad's EDC. Been hooked ever since.

I'm very curious what the 350 will do with the 20gr slugs. If not magnum springers I wonder who H&N is marketing those heavy slugs too? I still need to find/buy a scope for it first. I love projects, I'm currently sighting in a Benjamin Kratos .25 with a UTG Scope.
 

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I got ya beat, 65 years young. I've been shooting since I was 5 on my grandpa's farm in Tennessee. First gun I shot was a 1911, my dad's EDC. Been hooked ever since.

I'm very curious what the 350 will do with the 20gr slugs. If not magnum springers I wonder who H&N is marketing those heavy slugs too? I still need to find/buy a scope for it first. I love projects, I'm currently sighting in a Benjamin Kratos .25 with a UTG Scope.
Yup that's definitely more experience than me😅😌They are designed for shooters like @Soren Drost and the like shooting Ghosts, impacts, Delta Wolves, Condors etc that have massive power (for .177) to spare. To send a 20gr projectile well you need to be getting close to 30FPE. Don't hurt to have some ammo in stock though for a different gun to try in! Only ammo I ever regretted buying was the H&N silver points...just don't shoot accurate outta any gun I've tried yet.
 
Yup that's definitely more experience than me😅😌They are designed for shooters like @Soren Drost and the like shooting Ghosts, impacts, Delta Wolves, Condors etc that have massive power (for .177) to spare. To send a 20gr projectile well you need to be getting close to 30FPE. Don't hurt to have some ammo in stock though for a different gun to try in! Only ammo I ever regretted buying was the H&N silver points...just don't shoot accurate outta any gun I've tried yet.

The 350 .177 is considered one of the most powerful magnum springers made. I never shot the nitro-piston version, but I read the springer was more powerful. It kicks very hard, high FPS with heavy pellets. The 350 is more powerful than the FX Impact or those other PCPs, 20gr should work fine. Remember pellet/projectiles become unstable at higher speeds, slower speed usually means better accuracy, hence subsonic .22LR target ammo.
 
Yup that's definitely more experience than me😅😌They are designed for shooters like @Soren Drost and the like shooting Ghosts, impacts, Delta Wolves, Condors etc that have massive power (for .177) to spare. To send a 20gr projectile well you need to be getting close to 30FPE. Don't hurt to have some ammo in stock though for a different gun to try in! Only ammo I ever regretted buying was the H&N silver points...just don't shoot accurate outta any gun I've tried yet.

Quick FPE calculator, well above 30FPE.
 

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The 350 .177 is considered one of the most powerful magnum springers made. I never shot the nitro-piston version, but I read the springer was more powerful. It kicks very hard, high FPS with heavy pellets. The 350 is more powerful than the FX Impact or those other PCPs, 20gr should work fine. Remember pellet/projectiles become unstable at higher speeds, slower speed usually means better accuracy, hence subsonic .22LR target ammo.
Actually every single gun I listed is more powerful in .177 than the Diana, by quite a bit actually. Not sure where your info is coming from? The .177 S510 is no slouch and makes 20FPE in .177, matching perfectly the 350mag (and therefore makes and excellent FT gun) The difference? The S510 accuracy is effortless, the 350 takes alot of effort to get to shooting nearly as accurate. Now I'm really excited for you to get the 20gr slugs 😅 Some of the Gamo guns claim higher fps specs but that's shooting their lightweight Gamo rocket pellets. (goodbye accuracy)
 
Actually every single gun I listed is more powerful in .177 than the Diana, by quite a bit actually. Not sure where your info is coming from? The .177 S510 is no slouch and makes 20FPE in .177, matching perfectly the 350mag (and therefore makes and excellent FT gun) The difference? The S510 accuracy is effortless, the 350 takes alot of effort to get to shooting nearly as accurate. Now I'm really excited for you to get the 20gr pellets 😅 Some of the Gamo guns claim higher fps specs but that's shooting their lightweight Gamo rocket pellets. (goodbye accuracy)

The 350 specs are readily available. Obviously a magnum springer is going to be more challenging to shoot accurately, Junior. The FPE calculator isn't wrong, that's available in multiple formats online also. My AA S410 Classic FAC in .22 is probably the most easy to shoot accurately air rifle I own, but I seek challenges, not immediate gratification. Perhaps in a few decades you will too? 😂
 
The 350 specs are readily available. Obviously a magnum springer is going to be more challenging to shoot accurately, Junior. The FPE calculator isn't wrong, that's available in multiple formats online also. My AA S410 Classic FAC in .22 is probably the most easy to shoot accurately air rifle I own, but I seek challenges, not immediate gratification. Perhaps in a few decades you will too? 😂
OK do me a huge favor then, put your glasses on if specs are readily available...look them up! The .177 maxes out @ 20fpe and (here it comes) the .22 can hit a max of 30FPE. My comparison was meant to prove that the S510 is a med powered gun, and it can't shoot the 20gr slugs. All the guns I listed can and that's what any .177 slug past 13gr is marketed for. Back to math...my brothers tuned 350 is sending the 10.03 slugs @925. How on earth do you plan to get 20gr slugs to 900FPS? Your losing credibility here man.
 
OK do me a huge favor then, put your glasses on if specs are readily available...look them up! The .177 maxes out @ 20fpe and (here it comes) the .22 can hit a max of 30FPE. My comparison was meant to prove that the S510 is a med powered gun, and it can't shoot the 20gr slugs. All the guns I listed can and that's what any .177 slug past 13gr is marketed for. Back to math...my brothers tuned 350 is sending the 10.03 slugs @925. How on earth do you plan to get 20gr slugs to 900FPS? Your losing credibility here man.

Son, you already lost what little credibility you think you had, "my brother's tuned 350"? Why are all your examples off the internet or belong to someone else you allegedly know? Why are you so angry and concerned about my airgunning life and adventures? If you bothered to work out the specs, load the FPE calculator, you'll see even at low FPS with heavy projectiles the FPE is very impressive. Are you familiar with how slow an .45 ACP round travels and how destructive it is? You even stated that the 20gr slugs wouldn't make it out the barrel! 😂 And tried to impress me with your advanced age of 37 and years of experience! 😂 I appreciate your input, but you're getting kinda silly at this point. Bottom-line it's my airgun and I'm going to experiment with it, different scope setups and pellets. That's what this hobby/sport is all about, not feeding angry trolls who for some reason want to be right about everything. Please feel free to check out my IG account: southocairguns
 
Oh look it's my TX on the right and my brother's 350 on the left. Today's pic. Trolls use the internet.... I use my experience. I mentioned earlier we have two 350s that we shoot often...thanks for actually reading my replies. Anyways if we don't hear back from you about this we all will know the 20gr got stuck in the barrel, and you are too embarrassed to let us know. I literally was trying to offer my experience and save you some money that's all. Nice.
 

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Oh look it's my TX on the right and my brother's 350 on the left. Today's pic. Trolls use the internet.... I use my experience. I mentioned earlier we have two 350s that we shoot often...thanks for actually reading my replies. Anyways if we don't hear back from you about this we all will know the 20gr got stuck in the barrel, and you are too embarrassed to let us know. I literally was trying to offer my experience and save you some money that's all. Nice.

I appreciate your input, but again I'll do what I want with my gun. I suggest you stop worrying about it and I won't worry about slugs getting stuck in my barrel. Oh and thanks for saving me money. 😉
 
That's what's great about this hobby I completely agree, buy what you want and test it in what gun you want, but yes I was just hoping to save you a headache, possibly a broken spring, and maybe a tin of slugs you can't use. Sorry for trying to help. 🙏
 
Correct but plain and simply there is no .177 spring gun on this earth that can do that kinda power. The Dianas we shoot are hitting 19FPE with the 10.03 slugs and 20 with the 10.34 pellets after they settled in.

Even at 750 FPS, it's going to be 25 FPE! Math. More than enough for hunting small game. Maybe the spring is weak in your brother's tuned 350? Mine is mint. 30 FPE isn't the "Holy Grail", in the UK they hunt rabbits and squirrels quite successfully with sub 12 FPE. Pellet placement is more important than some arbitrary number you heard was critical for whatever reason.
 
Even at 750 FPS, it's going to be 25 FPE! Math. More than enough for hunting small game. Maybe the spring is weak in your brother's tuned 350? Mine is mint. 30 FPE isn't the "Holy Grail", in the UK they hunt rabbits and squirrels quite successfully with sub 12 FPE. Pellet placement is more important than some arbitrary number you heard was critical for whatever reason.
He got the entire kit from Vortek (PG4) last winter so it's probably got 3 tins of pellets/slugs through it? They definitely 'settle in' and are weaker then when brand new...I know that when they bought them they would send 7.9gr crosman pellets (only ones I had at the time) supersonic, now they will not. He kept all his stock internals to swap back if needed but he wasn't happy with the harshness and the death of his last scope so that's why he bought the kit. Didn't really gain or lose any FPS to be honest. The kit came with some spacers...overtime if it gets weaker you add em to beef it back up. As you go up with the grain weight Fps drops but Fpe climbs, but only to a certain point...I wanted to chrony the 15gr Wildman slugs we have but alas it was cloudy yesterday and the prochrono is a fair weather unit😞 For what it is accuracy is very good right now! 30Y groups here, his was bottom and left side bulls, mine with TX was top and right bulls. TX always wins on paper but he usually wins plinking or pesting sessions!🤔
 

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