JSB exact pellets. Normal 8.44 gr or heavies 10.34gr for sub 12 springers????

[MikeHW45]

As per title and your reasoning please gents and ladies

[tinbum]

Setting aside the issues with the rifle's preffered pellets, (which will almost certainly be the 8.44g btw) the whole point of .177 is it's flat trajectory. Why comprimise it with a heavy pellet?

[rhyslightnin]

Setting aside the issues with the rifle's preffered pellets, (which will almost certainly be the 8.44g btw) the whole point of .177 is it's flat trajectory. Why comprimise it with a heavy pellet?

Mmmmmmm... I disagree tinny I think you need to use as heavier .177 pellets as possible so you can get used to the trajectory so when you realise your being a fool & change to a .20 or .22 the transition will be smoother

[Steyr]

Setting aside the issues with the rifle's preffered pellets, (which will almost certainly be the 8.44g btw) the whole point of .177 is it's flat trajectory. Whyu comprimise it with a heavy pellet?

Why use 8.44 when you can go 7.9. They target shoot better for me if paper...they drop better longer if it blinks and maximise pellet traj too.

No brainer for me. I dont really see any advantage in heavies unless its got FAC type air up its arse.

[Alakar]

Both !
I've used both in my springers to great effect .
Currently though I'm using the lighter ones in springers and the heavies in my PCP .
Try both , only you and your rifle can decide which is best.

[MikeHW45]

Both !
I've used both in my springers to great effect .
Currently though I'm using the lighter ones in springers and the heavies in my PCP .
Try both , only you and your rifle can decide which is best.

That's the same way round I've been using them to be honest. My S510 loves the heavies where as my springers tend to prefer the 8.44 variety whether it be JSB or HN sport etc. As Tinbum correctly says the extra weight thus affects trajectory and muzzle velocity which is what made me wonder which ones people prefer and why.

[TonyL]

Well, Mike, that is one thing that I fully intend to have a good look at in the near future.

Y'see, the "conventional" wisdom has always pointed more to lighter pellets being more efficient in terms of power production in springers. And that heavier ones would rob power and result in harsher shot cycles.

But, Nice Phil, Mr Rickenbacker, let me try some of his JSB Heavies on the Sunday of the last Bash and.....wow!

You'd maybe have to test in more clinical conditions to test the firing cycle side of things, but they seemed pretty nice in my '95 which is usually fed FTTs. Now, on that Sunday, the wind had picked up. On the metal zeroing plate (approx 30 yards?) the FTTs, although still grouping nicely, were being shoved about an inch to the left. The Heavies were bang on point of aim and grouped very nicely indeed.

I experienced similar findings many years ago with the old (9.3 grains?) H&N Silhouettes.

You'd have to expect a slightly more curved trajectory, I guess, although that would be slightly compensated by the better velocity retention.

Hopefully some peeps will jump in who have conducted this very comparison. In the meantime, I'd say get stuck in, give them a proper test and see what you think and how they go in your particular rifle(s).

The other ones that I'm itching to try out are the new H&N Barracuda FT.....9.5 grains, I seem to remember, and not available yet. I think they're still gathering findings from various testers and / or gearing up for full-on production.

[MikeHW45]

But, Nice Phil, Mr Rickenbacker, let me try some of his JSB Heavies on the Sunday of the last Bash and.....wow!

It was you posting this recently in the boinger bash thread recently that got me thinking and why I decided to bung it on here as a thread.

[TonyL]

Gotcha, Mikey Boy!

So, it sounds like you already have both types. That'll make a lovely little testing day for you to enjoy.

And don't forget to report back!

[MikeHW45]

Gotcha, Mikey Boy!

So, it sounds like you already have both types. That'll make a lovely little testing day for you to enjoy.

And don't forget to report back!

The heavier pellets I have are Bisley Magnums which i've just about finished. I've just ordered a tin of JSB heavies on flea bay so will do a bit of testing later in the week and do an update Tone

[look no hands]

I did a pellet test the other day on my Prosport to see if I could find a cheaper but just as accurate pellet than the AA's that I normally feed it, I bought one of those JSB .177 tester packs and found it liked the RS pellets, which is good as I can get them considerably cheaper in bulk than the AA's.

Pete

[TonyL]

Pure guess here, but I think you'll find the JSB Heavies much easier going in a springer than the Bisley Magnums......softer, thinner skirts, less release pressure required = nicer firing cycle.

[Rickenbacker]

It was you posting this recently in the boinger bash thread recently that got me thinking and why I decided to bung it on here as a thread.

As said, I was shooting alongside Tone, trying out two different batch numbers of the 'heavies', in a crosswind.

For me, one batch shot very well, taking less wind than 8.4s. Probably half as much, @ 30 yards. The other batch were all over the place (although that 'bad' batch shot well in Tone's '95 ).

(my test rifle: can't remember if I was using the '95 in a '98 stock, or the '98 in a GinB target stock, but both are shortstroke actions).

After a couple of shots to get used to the slightly different shot cycle, we both agreed that recoil was a bit more, but it felt rather nice (not very scientific, eh?).

To address Timbottom's (spelling corrected) point:

Setting aside the issues with the rifle's preferred pellets, (which will almost certainly be the 8.44g btw) the whole point of .177 is it's flat trajectory. Why compromise it with a heavy pellet?

Some would say, trajectory is easier to learn than wind therefore once you've found a heavy pellet that cheats the wind, and groups well at 55 yards - you're on to a windy-day winner. Stands to reason that you'll have a lot more targets where you can play the percentage shot (aim inside edge of the kill), and even if the shot goes dead straight, you should still get it. In fact, the only way you can possibly miss is if you guess the wind the wrong way. And even you probably wouldn't do that.

Then it's off to the trophy tent for tea and medals - Huzza!

[TonyL]

Some would say, trajectory is easier to learn than wind therefore once you've found a heavy pellet that cheats the wind, and groups well at 55 yards - you're on to a windy-day winner. Stands to reason that you'll have a lot more targets where you can play the percentage shot (aim inside edge of the kill), and even if the shot goes dead straight, you should still get it.

Agreed.

[MikeHW45]

I have had a brief chance this morning to start testing a few pellets through my Prosport to compare groupings and hopefully over the weekend will have chance to chrono the four that I have decided to compare. Upon completion will bung some completely un-biased results up.