220 Swift and 88gr Hornady ELD match

[angus]

Looking for load data for 220 Swift using 88gr Hornady ELD match. Thinking of using
IMR4831.

 

[SSL]

Unless you have a 1-7" twist or faster, those 88-grain bullets aren't going to stabilize. "Standard" .220 twist ranges from 1-12" to 1-16". Of course, a custom barrel changes all of that if ordered with a fast twist.

 

[angus]

I’m running a 1-7 twist 4 groove.

 

[1911nut]

 

[6MMsteve]

I would try some H4350 maybe look at a 220 rocket load data, primer pockets get big fast in swift brass

 

[Ned Ludd]

Angus - I'll add that the .220 Swift may not be the best choice for pushing the 88 ELDMs due to potential jacket failure issues. I have caused jacket failures running the 88 ELDMs at ~2850 fps out a .223 Rem F-TR that has 30", 7-twist, 0.218"/0.224", 5R barrel. Jacket failure is largely an issue of friction/heat, so barrel length is an important factor in this equation. You may get away with pushing the 88s to much higher velocities (i.e. 3000+ fps) with a .220 Swift if you're using a much shorter barrel. Then again, you may not. A number of F-TR shooters have found the best approach to alleviating jacket failures with .224" "heavies" is to use a 0.219" bore barrel, rather than a 0.218" bore. Just be aware of the possibility of jacket failures with these bullets if you push them extremely fast with large cartridges and long barrels.

 

[B23]

If you can get your hands on some RL26 I think it would make you happy.

 

[No manches"]

I've got 2, 220 swifts..(love them) one is made on a 1903 Springfield action wearing a Douglas 11twist. The other is a new era Winchester model 70 wearing a kreiger 12twist..
I've been very interested on building another in a 9twist" to shoot 77grn bullets..my thoughts it would be a killer right off the gate.

I'll tag along this thread....and get more reference.

 

[Frankm]

To answer your original question …. With IMR4831 use starting/mid range loads for 22-250AI or 22 Creed and work up. My 22-250AI will shoot 37-38 grs of IMR4831 with 88 Eldm but that’s hot…. If you back down to 34 grs or so to start and work up you s/b safe. Having a chronograph would be beneifical. Depending on barrel length 3000-3200 should be attainable HOWEVER as mentioned above a 7 twt might blow them up. We ve found when you approach 3200 or so in an 8 twt you can lose some. Think 300K rpm or less is a practical ceiling.
Good luck

 

[Frankm]

Also longer barrels ( friction / heat) got them blowing up in 30” barrels vs 26” even when velocities were same.

 

[No manches"]

Guess not much interest on the topic..
I will get a 9twist barrel and stuff it on one of my polish mauser's.. just debating on whether a normal swift or Ackley improved?...
I got several lbs of IMR 4955 just laying around..
I'll make it work..
This thing should be a great sniping unit with 77 SMK's.

 

[swimster]

I've been shooting 88's I'm my 22/250AI for 2 Prarie dog trips. Probably 4or 500 rounds through it so far. I have had no problems with the bullets blowing up. It's a 27 inch Bartilen 7 twist RL-22 at 3150 fps. Holds the wind pretty good.