09-28-2011, 03:36 PM
bwaites Wrote:As a general rule, you don't have to worry to about it much, rifle primers are rifle primers, large = small except for size. Magnum = Magnum. Drop down a grain or two and work back up, I'm ultraconservative and world say drop down 10% and work up.
bwaites,
There is a difference in the large rifle/small rifle large pistol/small pistol primers. There is very small, and they are considered to be interchangeable by some, but others warn to never do it... Here is the info that I have from another forum:
NOTE: This data is reference only. This is on a DMS (don't mean squat) scale. It is relative to this set of tests and this tester. Take them with a grain of salt and as a guide only. Most of the tests were of 100 or more primers. A few were of 50 when limited amounts were available.
Ranked in order of power
Large Rifle = LR, Large Rifle Magnum = LRM, Large pistol =LP,
Brand/type Power Average Range Std. Dev
1 Fed Match GM215M 6.12 5.23-6.8 .351
2 Federal 215 LRM 5.69 5.2-6.5 .4437
3 CCI 250 LRM 5.66 4.5-7.4 .4832
4 Winchester WLRM 5.45 5.1-6.0 .2046
5 Remington 9 1/2 LRM 5.09 3.5-6.75 .6641
6 Winchester WLR 4.8 4.1-6.0 .4300
7 Remington 9 1/2 LR 4.75 3.7-6.25 .5679
8 Fed Match GM210M 4.64 4.0-5.6 .3296
9 Federal 210 LR 4.62 3.7-5.5 .3997
10 CCI BR2 4.37 4.0-5.0 .2460
11 CCI 200 LR 4.28 3.8-4.8 .3218
12 KVB 7 LR Russian 4.27 3.8-4.8 .2213
13 Rem 91/2 (30 yrs old) 4.16 3.8-4.8 .3427
Pistol primers
14 Rem LP 4.47 3.2-5.6 .5171
15 KVB 45 LP Russian 3.89 3.3-4.2 .2232
16 CCI 300 LP 3.18 2.7-3.5 .2406
17 Federal 150 LP 3.11 2.6-3.5 .2090
18 Fed Match GM150M 3.05 2.6-3.7 .2299