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  #1  
Old 07-17-2005, 02:04 PM
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Speer Grand Slam bullets


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I recently got a bunch of 150 gr 30 cal Speer Grand Slam bullets for a good price with the intention of working up a hunting load.

I loaded them for 30-06 over 47 grains of IMR4895. I noticed that I had to press the bullets down to 3.170 OAL just to get the case mouth over the canelure. I used a Lee Factory crimp die to crimp. According to the data in Speer #13, the bullets were tested at COL of 3.160.

I noticed that the rounds seemed to be going all over the place. I had the scope reasonably sighted in, but I noticed the bullets were grouping about 3-4 inches or more. I was using a Lead Sled as a rest.

I was just wondering if anyone else here has used these and what kind of results they have had. The bullets I bought weren't in the regular Speer boxes, they were repackaged by MidwayUSA. I also noticed that ammo loaded with 150 gr Grand Slam bullets has been discontinued on their website. I'm wondering if the bullets I bought are just junk that Speer is pawning off on unsuspecting customers.
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  #2  
Old 07-17-2005, 06:54 PM
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Tried the Speer Grand Slams in 7mm Mag and 30-06. Never had any luck with accuracy in either cartridge.

Only Speer bullet I've found that works well is a 52 gr FBHP that my Ruger M77 V/T .223 likes.

I'm sure others will chime in extolling the virtues of Speer bullets in their firearms.
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  #3  
Old 07-18-2005, 04:27 AM
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Can't say about the 30 caliber bullets, but I have had very good luck with Grand Slams in .243, .257, .338 and .375 calibers. Got loads for each that will shoot an inch or better, with the exception of the 375 which is about 1.5in. You might also like to know that all the ones I shoot are factory blems that I bought when I lived in Lewiston, ID where the factory is. I seriously doubt they would try to pawn off bullets that they knew were not their best quality.
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  #4  
Old 07-18-2005, 04:33 AM
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Some gun and load combinations just don't like certain bullets no matter how good they are. I wouldn't crimp these at all.
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  #5  
Old 07-18-2005, 04:35 AM
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Quote:
Originally Posted by TedH
Can't say about the 30 caliber bullets, but I have had very good luck with Grand Slams in .243, .257, .338 and .375 calibers. Got loads for each that will shoot an inch or better, with the exception of the 375 which is about 1.5in. You might also like to know that all the ones I shoot are factory blems that I bought when I lived in Lewiston, ID where the factory is. I seriously doubt they would try to pawn off bullets that they knew were not their best quality.
Ted
I bought 250 of the 285 grain Speer Grand Slams for use in my 375 Whelen. Do you think I'd be able to generate enough velocity with the Whelen's case capacity, for expansion? I'd hate have these bullets act like solids.
Jim
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  #6  
Old 07-18-2005, 01:09 PM
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Quote:
Originally Posted by craig61a
I recently got a bunch of 150 gr 30 cal Speer Grand Slam bullets for a good price with the intention of working up a hunting load.

I loaded them for 30-06 over 47 grains of IMR4895. I noticed that I had to press the bullets down to 3.170 OAL just to get the case mouth over the canelure. I used a Lee Factory crimp die to crimp. According to the data in Speer #13, the bullets were tested at COL of 3.160.

I noticed that the rounds seemed to be going all over the place. I had the scope reasonably sighted in, but I noticed the bullets were grouping about 3-4 inches or more. I was using a Lead Sled as a rest.

I was just wondering if anyone else here has used these and what kind of results they have had. The bullets I bought weren't in the regular Speer boxes, they were repackaged by MidwayUSA. I also noticed that ammo loaded with 150 gr Grand Slam bullets has been discontinued on their website. I'm wondering if the bullets I bought are just junk that Speer is pawning off on unsuspecting customers.
With a FCD you don't have to crimp in the canelure if your rifle has a longer throat you can seat the bullet out a little and lightly crimp trying to keep from deforming the bullet. Just keep it out of the rifling about .010" or so. I don't crimp any of my loads for the 30-06. Also, I've bought a bunch of re-packaged bullets from Midway and the ones I got were fine.

Bill
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  #7  
Old 07-18-2005, 01:53 PM
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Quote:
Originally Posted by arkypete
Ted
I bought 250 of the 285 grain Speer Grand Slams for use in my 375 Whelen. Do you think I'd be able to generate enough velocity with the Whelen's case capacity, for expansion? I'd hate have these bullets act like solids.
Jim
Jim,
I don't know how much velocity you would be able to produce with your 375 Whelen as I am not at all familiar with that round. I can tell you this, I fired a couple of them into wet phone books from my 375 H&H at about 2500 fps. Distance was only about 25 yards. They penetrated good, mushroomed perfectly and ended up about 230 grains. I think they would still perform well with substantially less velocity but don't know for sure. Might have to try some in the phone books at about 2000 fps and see how they react.
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  #8  
Old 07-18-2005, 06:51 PM
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Craig - I've used Grand Slams in my hunting loads for: .243 Win (100gr), .270 Win (130 & 150gr), 7 Rem Mag (160 & 175gr), 30/06 (180gr) and .35 Whelen (250gr). I do not crimp my bullet, even though I have Lee crimping dies for most of the calibers, and I load .020 or more off the lands for best accuracy in my rifles. With my usual accurate powder/bullet combinationations in each caliber I can get 1 to 1 1/2" 3 shot groups with the "Slams". I have found that I cannot use most "max" powder loads with this bullet without pressure signs and "excessive" velocity "spikes" over the chronograph. I surmiss that the jacket on the bullets are either harder or they have a longer "bearing" (contact) surface than most; thus, I usually drop a grain or so to get the same velocities I get with more "conventional" bullets. "Performance wise", I consider them about on "par" with the Nosler Partition at a lower price (at least at less than "hyper" velocities). My most accurate load in my .35 Whelen is with the 250gr Slam over 53.0grs of H4895. My 2 cents. Riley
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  #9  
Old 07-18-2005, 07:48 PM
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Most of the time you can get the group to decrease in size by cleaning the bore, thoroughly and firing the bullet through to smooth it. The grand slam is a particularly hard and tough bullet, enough that it's copper and gilding metal combination skin is much harder than most other bullets. If you do not use a really strong copper solvent until no more blue shows, you may experience that larger than usual pattern. I use the barnes x and it is particularly soft and, sometimes when I use the grand slam, i get larger than normal patterns. After using the solven like cr10 barnes or the sweets strongest copper solvent and repeating with a wire or nylon brush until blue color is no longer present on the patch, the rifle will begin to come back to the accuracy that you once knew. Try shooting a few shots and then cleaning with solvent again. After a couple of those cleanings, it will shoot much better. I typically get 1 to 2 inch groups at a hundred with the grand slams. If it doesn't improve after that, the rifle twist may not be conducive to the rouded olgive and the cannalure of the slam. Try a few barnes x. They always seem to work in a good clean barrel. Hope that helps some.

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  #10  
Old 07-20-2005, 03:08 PM
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Thank you for the replies.

I did do some investigating on the web. I learned that Lee doesn't recommend using the FCD on Speer and bullets, and Speer recommends the same. There was also mention of some animosity between the two companies. I also read that some have used FCD on Speer bullets without any problems. So I guess it could just be a matter of personal preference.

I don't crimp loads I make up for my 1903A3 using 168 gr. SMK's, but they are mostly loaded one at a time, with the exception of rapid fire sitting and prone. I guess I haven't noticed any setback in the bullets, but I have read that for a hunting round you should crimp the bullet. I suppose the jostling and firing while hunting could cause that, but I don't know - I've only been reloading for 9 months. I work up loads for a gun, then move on to another.

So I have gotten to my MR7 that I bought a few years ago NIB for $330. I am also in the process of breaking it in, so while firing I followed the proceedure in the Barnes #3 manual for breaking in a new gun.

I'll have to do some more experimenting with this bullet. I read that people have had good luck in .308, maybe I can feed them to my Savage or my FR8...
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  #11  
Old 07-20-2005, 06:42 PM
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I have loaded them in my 03/A3 custom in 30/06 but with 46 grs of IMR4895 and that was as hot as dared to push them. I have shot MOA groups with them un 30 cal and 35cal.
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  #12  
Old 07-23-2005, 11:13 AM
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That procedure in the Barnes manual is good and the one that Douglass or shilen have on their web site is very similar. They suggest a hard shell bullet for breakin just like the barnes #3. I did that as well. Grand slams are some of the hardest and toughest. you're gonna love the barnes too soon.

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