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Hi all so been to the range yesterday arvo testing out a few loads with the 140amax. And what I have found is that past book max I'm getting a avg of 2720fps out of my standed tikka but did notice the groups getting better but stopped on 43.5grs. No signs of presser and ezy bolt lift etc. should I be happy with this or work up a little bit more? Thoughts please
@gimp
Attachment 39154Attachment 39155
Who cares about that... nice rifle! Nice groups!
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I have the exact rifle and trying 140 amaxes but mine haven't ever shot that good . What powder are you using what brass what coal etc . I have just bought some 123 amaxes to try. My brass was win 243 and had half inch to an inch groups when I swapped to lapua my es dropped heaps but my groups opened up
O.a.l is 2.810 and fed primers 2209 powder I was going to try the lighter amaxs but wanted a good all round setup
Fc brass also. Only neck size
I look at the max velocity in the reloading books, not max powder weight. Most rifles have sloppier chambers and barrels compared to the universal receiver used by the reloading book authors. For the same powder weight the rifle will usually produce less pressure and hence less velocity than the universal receiver.
ADI manual lists 2730 as the max velocity with 260 and 140gr projectile and 2217 powder. Pressure is 57,000 psi. So you are probably about where you should be.
Don't worry about fps, the animal won't notice 100fps
If its accurate use it.
A 140amx doing 2720's going to kill plenty of shit dead
Now go hunt with it !!!Quote:
Originally Posted by dale
That sounds like an accurate statement to me.Quote:
Originally Posted by Timmay
Looks good to me!
Just to chuck it out there, an animal WILL notice 100 fps especially using monolithic or tough bonded bullets.Quote:
Originally Posted by Timmay
I have loaded well up from best accuracy plenty of times to take advantage of the extra energy, after all I am man enough to admit I cannot shoot 1/4MOA from any position cold tired and breathing heavily so dont require that level of accuraccy,I rather stoke it up and use all of the caliber potential providing its in that 1/2-1moa band.
That said that projectile at that speed will do the job.
Not going to start one of them long drawn out "discussions" but we are talking about A-Max's here :thumbsup:Quote:
Originally Posted by veitnamcam
True, but faster equals further also :)Quote:
Originally Posted by Timmay
I was running the 140s at 2900-2950 from my 26" 260.
All I can say is they are very soft at those velocities up close, very nice at distance though :)
A slower velocity wouldn't necessarily be a bad thing for close shots with the 140 Amax.
@Kiwi Greg being that my barrel is 22inc long would I be pushing shit uphill expecting to get a extra 100fps or so. And would you expect the groups to open. ?
I would expect you'd be able to get up to 2800 or slightly over.
nice shooting mate. all depends on what you want to do. out to 300y, just go shoot it. 600y and you should try some groups further out
Id just leave it at that velocity since Amax is a quite soft bullet. You may of course have to give it an extra click up when you get out to distance compared to 2800fps but thats no biggie. Tens of thousands of moose are killed in Sweden every year with 140gr 6,5s at that velocity.
I'm a velocity whore so understand where you coming from.... however those are stellar groups for a factory rifle. It ain't broke so just go out & hunt :P
Quote:
Originally Posted by Sidelock
But that doesn't make the 6.5 magic. And mostly they use hard bullets like the Nautilus and other big heavy blunt ones within quite close ranges don't they?
Dale, I reckon that at about your 2750 fps you have got yourself a really handy all round calibre in a superbly accurate rifle. I would now get to know its limitations on game, rather than test its extremes on game.
That right, but if a moose tips over so should a deer no matter the species. ;)Quote:
Originally Posted by Tahr
The heavy softpoints have a wide following but softer bullets like SSTs are getting more and more popular. The 140gr partition is also very popular.
No copper bullets are used as they dont meet the legal bullet weight limit.
Just made some ammo of this exact load I didn't full length size the brass or anything so I'll See how mine goes
@Phill243 I started at 41.5 but grouped well under 1/2 with that load but speed was about 2590 odd would be keen to see how you go
Just sell it dale someone will grad it even though it's a dud.
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My bad I did full length size the brass I mean I didn't trim it haha .stupid me I was writing that while I was driving to the range . I didn't have a chrony so I don't know what speed I was getting I had a little bit of primer flattening and one round had tight bolt lift but I put 3 rounds through all touching but one round half inch to the right I think that was me .
The shot that's in the bull was an old load I used for barrel fouling . And the other 4 down the bottom are me sighting it in a week ago after getting it suppressed
@Phill243 i don't use a suppressor but if that's how she shot then no need to worry about the 123gr amaxs
Yea I had my 260 unsupressed for over a year and I never did much load development because I knew I knew I was going to buy one . It would possibly change the load. So 2 weeks ago I sent it to DPT . Really pleased with results . Mainly for my dogs and my hearing . Yea I'm going to move out to 2-300 yards and see how the grouping goes . Is that a vx6 on your rifle ?
Yeah a vx6 2-12x42 awesome little scope
The only way to find out what YOUR rifle likes & how fast it will go is to try it for yourself & see :)Quote:
Originally Posted by dale
@Kudu
When I was messing around with 260s a few years ago I found H414, more speed and small groups cant quote any thing now but i remember H414 was superior to 2209 and 2213sc.
I think w 760 is also close to H414.
Cheers
2209 gives me the best groups/velocity with 139-140gr bullets in my 20" Rem model 7, I tried W760 but couldn't get groups anywhere near as good (0.6-0.7with 2209) and pressures seemed to build earlier so wasn't getting the same velocity.
Am now running a 139gr Scenar at 2780fps and shooting reasonable groups, will shoot around 2" at 412yards consistently, and they tried telling me the Model 7 1in9" tube wouldn't stabilise anything over 130!
