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Hey, pretty keen to take down my 7mm rem mag barrel from 24" to about 20". Is only a cheap Mossberg 4x4 and I just want it as a close-mid range sorta rifle for reds and the odd fallow that gets in the way. Just wondering what kinda velocity I could expect to lose, and any accuracy loss? Also what kinda projectiles do the best job with the 7mm under 100m or so?
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I believe you loose about 35fps per inch.
at close range maybe try a cor-loc or something with stout construction.
Cheers, Im thinking a partition maybe. But would I be better with heavier or lighter bullets?
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Partition would do well for what your after.
The partition is certainly a nice and effective bullet, but comes at the high end of the price market. Not a problem if only shooting a few.
7mm mag seems a bit of overkill for a close range rifle! But maybe thats just me. You shouldn't lose accuracy, just velocity (others can advise how much) and gain some extra noise and muzzle blast.
y u no 7mm08
I got it too cheap to pass up, and already have a more than satisfactory lr rig. Im just quizzing at this stage. May just pass it on yet
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That would probably be the best option.Quote:
Originally Posted by Jpayne
no such thing as over gunned, just choose the right projectile.
What scoped said, with that length barrel on a 7mm Rem Mag, you are wasting the expensive ammo (and powder if you hand load) and would be better off with a 7mm-08.
Fuck its just a Mozzie. Chop the thing off and see how you go. Whats the worst that can happen?
I have some 7mm 154 SST I bought to try in my 7-08, you are welcome to try a few of those. I bought them for shortish range shooting.
re shortening the barrel....I was tempted to do it to my tikka Rem mag, but ended up swapping it for a tikka 7-08. I was going to try a lot faster powders than the 2217 I was using, to try and keep velocity up. A light pill in a short barrel should still travel ok for 2-300m :thumbsup:
The 7mm mag 20 inch I played with would do about 2900fps with the 162 Amax.
Its not a target rifle and it wont get hundreds of rounds through it so I don't mind spending $2 a round if its going to do what I want. Hell might even chop it down to 18 just for shits
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Enjoy the increased recoil, muzzle flash and blast then. :PQuote:
Originally Posted by Jpayne
Run it over the chrony before and after. Be interesting to see results
mine has a 19inch barrel (shortened before i got it) at that length it needed to be suppressed just to loud. good overbarrel and is now my go to rifle still getting 2800+ with out too much load work yet.
cheers john
Doing that to a 7mm Mag is just plain wrong, maybe you could engineer a swap for 7mm08 or better: 308 or similar, as for projectiles, at the sort of ranges you indicated, Sierra Prohunter would be great, cheap, accurate in any rifle and not fussy to find a good working load.
Swap it for a short range rifle. 7mmRM is a 26 inch barrel item, preferably.