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RN vs Spitzer

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Honkytonk View Drop Down
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    Posted: September 01 2020 at 6:13am
I've been reading about RN vs Spitzer. It seems that the Spitzer starts to outperform the RN after about 200 yds. As the range I go to is only 100 yds, would I see a huge difference in accuracy between a 180 gr Sierra Spitzer and a 174 gr Hornady RN at this distance? My typical distance while hunting is less than 200 yds. Thanks!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Goosic Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 8:09am
My opinion is that any rifle firing your typical hunting round will have,within reason, similar ballistic characteristics and perform as such out to 100 yards with little to no marked differences be it a round nose bullet or one with a point. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bear43 Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 8:14am
I'm with Goosic. At 100 yards I have never seen much difference in performance either way so long as the bullets are close in weight. It's the longer ranges that show the differences.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Zed Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 10:18am
If you are hunting; it's probably better to choose which ammunition will drop the animal quickly with minimum damage to the meat. I think that the accuracy at your hunting ranges would be less important; providing the ammunition will hold a reasonable group from the rifle concerned.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 11:30am
HT, since you are loading up your own ammo, try both bullets at 100 yards, if you get acceptable accuracy from both then you can pick the bullet type you prefer.   

Make a note of the scope zero settings for both types of bullets at 100 yards.   Since you would rarely shoot beyond 200 yards, you can set the scope elevation to give bullet impact about 1 to 2 inches high at 100 yards.  That will get you close enough for anything out to 200 yards.  We can run the numbers in my ballistics program if you want to be more precise, just need to know the height of the scope above the bore, the bullet you are using and expected muzzle velocity of your load. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Goosic Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 12:03pm
2.100" above center of bore.
168grn BTHP  .308 diameter 
2685 fps chronographed

...aaannd go!...
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Post Options Post Options   Thanks (1) Thanks(1)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 12:16pm
Approx 1.7 inches high at 100 yards for a 200 yard zero.  But need to look up the actual BC for this bullet, a SMK or Hornady Match or something else?


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Goosic Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 12:26pm
Sierra 168grn HPBT  #2200C
Ballistic Coefficient  .462
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 1:06pm
1.67 inches high at 100 yards for a 200 yard zero. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 1:11pm
sorry, that’s 1.67 MOA.  It’s 1.75 inches high.  

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 1:46pm
Sorry to state the obvious but thats a target, not a hunting bullet! Sierra specifically says to not use them for hunting but instead use the 165Gr GameKing HPBT.
Oddly my 7.62 prefers that over the MatchKing, or anything else, so its a win-win situation.
Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 3:39pm
Shamu, I think Gossic was asking about the trajectory of his 7.62 target load, not for hunting.  HT is talking about .303 loads with the 180 pro-hunter soft point for hunting.  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Goosic Quote  Post ReplyReply Direct Link To This Post Posted: September 01 2020 at 4:09pm
I have a table reserved for tomorrow morning and I intend to see just how accurate I can be with the fully stocked No4 7.62mm. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 303 Hunter Quote  Post ReplyReply Direct Link To This Post Posted: September 02 2020 at 7:14am
The most accurate one will be which ever one your rifle likes best.
At one hundred yards the only place you might see any different between the two is in the terminal ballistics. Round nose bullets transfer their energy quicker but you probably won’t see that much of a difference in a 31 caliber. But as you noted a spitzer will carry its velocity and therefore energy down range better than a round nose.
The other thing to consider is how much impact velocity the bullets need too reliably perform. The Pro-Hunter is a stouter bullet then the Intr-lock and should be driven faster to provide optimum performance, with impact velocities ideally above 2200 fps or so.
The Lee Enfield is to the Canadian north what the Winchester repeater was to the American west.   Cal Bablitz
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Honkytonk Quote  Post ReplyReply Direct Link To This Post Posted: September 02 2020 at 8:21am
Thanks a bunch for all the info! Very useful. I'm a hunter first and foremost. I use our local range for load development, scope alignment and keeping what limited shooting skills I have kinda "sharpish" for the hunting season. I've become very interested in round nose bullets of larger grains driven at modest speeds for my Lee Enfields that prefer 180's over 150 gr. I've loaded up some RN's and will begin shooting these rifles at the range next week and begin to compare grouping performance. Thanks again!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: September 02 2020 at 3:09pm
That Sierra 180 gr ProHunter flat base spritzer bullet has never shot well from several of my No. 4 rifles, strings rounds vertical. Perhaps it’s more sensitive to barrel harmonics and you need to find the velocity it likes.  Most of my 10 shot groups at 100 yards were spread vertically about 4 inches, lateral spread was reasonable, 1.5 inches approx IIRC.

4 inch groups at 100 yards may be acceptable for short range hunting, but probably not at 300 and beyond if your looking for good shot placement.


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