300 WSM cartridge barrel length shortening test | Blaser R8 barrel shortening in 2.5 cm steps | energy loss and bullet velocity

To the overview of all speed tests - 308 Win, 6.5 Creedmoore, 8.5x55 and 300 WSM

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300 WSM barrel length shortening test: Shortened Blaser R8 barrel lengths or V0 Determination of barrel shortening - simply calculate energy loss!

The 300 WSM is probably the only magnum cartridge that can also be made from short runs still a corresponding performance yields. The high BC values of the bullets, high bullet weights and the enormous power yield with short barrels make the 300 WSM an insider tip for mountain hunting.

Through the Barrel shortening next to the shaft can be the Most weight reduced on a weapon can be used. The changed centre of gravity also achieves a good balance. The calibre 300 WSM is ideal for this purpose.

It is particularly suitable for short barrels due to its sleeve shape, has a enormous potential for high bullet weights and is generally more precise than average. This results in an ideal ratio of Shot with good BC value, short barrel length and therefore low weight of the weapon.

Kinetic energy online calculator HERE Calculate flight curve yourself HERE

Conclusion for the reloader: In addition to the Very good factory labours the performance of the 300 WSM can be expanded even further with modern projectiles.
When using bullets weighing more than 190 g, an energy of more than 2000 joules is achieved at 500 m (E500).
Through the use of coordinated labours with offensive burning NC powderWith the use of a special bullet, adapted bullet weight and powerful primers, short barrels between 460 and 510 mm are possible without any problems.

The following equipment was selected for the 300 WSM Test with speed measurements used

Blaser R8 Weapon with 300 Winchester Short Magnum Run
5 different factory ammunition
SAX MJG 120,5 gr. | Batch no.: M0038.1 202202
Hornady Outfitter CX 180 gr. | Batch No.: 3220344
Hornady Outfitter CX with Peregrine bullet 183 gr. | Batch no.: 3220344
SAKO Super Hammerhead 180 gr. | Batch No.: 229164900
LFB 3 Band Classic 143 gr. | Batch no.: 106114
NORMA Tipstrike 170 gr. batch no.: 0031218-00
MagnetoSpeed Mounted on the barrel for speed measurement (chronograph)

For the Blaser R8 barrel shortening test from 63.5 cm to 46 cm, the barrel was always sawed off by 25 mm - measured from the overpressure bore - after each shot series

Blaser R8 Determine barrel length for speed test

Picture series of the 300 Winchester Short Magnum speed test in our Indoor shooting range

Table Overview of the results of the 300 WSM barrel shorteningn - and measured V0 projectile velocities

Barrel length in " \| cm ⇒ V0 at 300 WSM	SAX MJG 120.5 grs - m/s	Hornady CX 180 grs - m/s	SAKO Super Hammer Head 180 grs - m/s	Hornady Peregrine Bullet 183 gr. - m/s	LFB 143 grs - m/s	NORMA Tippstrike 170 grs - m/s
25 \| 63,50	1090	871	880	854	983	963
24 \| 61,00	1077	866	891	842	974	945
23 \| 58,50	1066	864	877	834	961	939
22 \| 56,00	1067	860	869	833	932	940
21 \| 53,50	1046	849	858	825	939	926
20 \| 51,00	1035	850	856	813	927	909
19 \| 48,50	1021	833	848	804	916	893
18 \| 46,00	1001	823	835	798	902	886
Averaged, mean V0 loss m/s per 2.5 cm barrel shortening

Graphic: Overview of the 300 WSM barrel shortenings - and measured V0 bullet velocities

300 WSM Details incl. graphics calculated according to energy loss and bullet drop at various barrel lengths (Hornady Ballistic Calculator) and distances

SAX MJG 300 WSM 7.81 g Results

SAX MJG 120.5 grns | energy loss and bullet drop [cm] with different barrel lengths (Hornady Ballistic Calculator) and distances

Velocities were determined - starting from V0 - in each case using the Hornady Ballistic Calculator

SAX MJG 120.5 gr.
Batch no.: M0038.1 202202
Bullet weight: 7.81 g
BC value G1: 0.403
Room temperature: 17°C

Graphic full screen please CLICK on picture

Barrel length Inch	Barrel length cm	V0	Drop	V100	Drop	V200	Drop	V300	Drop	V400	Drop	V500	Drop
25	63,5	1090	-5,00	1002	0,00	921	-5,00	844	-22,00	771	-42,50	703	-102,30
	Energy J	4640		3921		3312		2782		2202		1930
24	61	1077	-5,00	990	0,00	909	-5,30	833	-22,70	761	-55,00	693	-105,40
	Energy J	4530		3827		3227		2710		2261		1875
23	58,5	1066	-5,00	980	0,00	900	-5,40	824	-23,40	752	-56,50	685	-108,10
	Energy J	4437		3750		3163		2651		2208		1832
22	56	1060	-5,00	974	0,00	894	-5,60	819	-23,80	748	-57,40	681	-109,70
	Energy J	4388		3705		3121		2619		2185		1811
21	53,5	1046	-5,00	961	0,00	882	-5,80	807	-24,70	737	-59,30	670	-113,30
	Energy J	4273		3606		3038		2543		2121		1753
20	51	1035	-5,00	951	0,00	872	-6,10	798	-25,50	728	-61,10	662	-116,50
	Energy J	4183		3532		2969		2487		2070		1711
19	48,5	1021	-5,00	938	0,00	860	-6,40	787	-26,50	717	-63,20	651	-120,40
	Energy J	4071		3436		2888		2419		2008		1655
18	46	1001	-5,00	919	0,00	842	-6,90	770	-28,10	701	-66,60	636	-126,60
	Energy J	3913		3298		2769		2315		1919		1580

Hornady CX Outfitter 300 WSM 11.7 g Results

Hornady CX Outfitter 180 grns | energy loss and bullet drop [cm] with different barrel lengths (Hornady Ballistic Calculator) and distances

Velocities were determined - starting from V0 - in each case using the Hornady Ballistic Calculator

Hornady CX Outfitter 180 gr.
Batch no.: 3220344
Bullet weight: 11.7 g
BC value G1: 0.469
Room temperature: 17°C

Graphic full screen please CLICK on picture

Barrel length Inch	Barrel length cm	V0	Drop	V100	Drop	V200	Drop	V300	Drop	V400	Drop	V500	Drop
25	63,5	871	-5,00	807	0,00	746	-10,40	688	-38,90	632	-89,10	579	-165,40
	Energy Joule	4438		3810		3256		2769		2337		1961
24	61	866	-5,00	802	0,00	741	-10,60	683	-39,50	628	-90,40	575	-167,80
	Energy Joule	4387		3763		3212		2729		2307		1934
23	58,5	864	-5,00	800	0,00	740	-10,70	681	-39,70	626	-90,90	574	-168,70
	Energy Joule	4367		3744		3203		2713		2292		1927
22	56	860	-5,00	797	0,00	736	-10,80	678	-40,20	623	-91,90	571	-170,50
	Energy Joule	4327		3716		3169		2689		2271		1907
21	53,5	849	-5,00	786	0,00	726	-11,20	668	-41,60	614	-94,90	562	-175,90
	Energy Joule	4217		3614		3083		2610		2205		1848
20	51	850	-5,00	787	0,00	727	-11,20	669	-41,40	614	-94,50	563	-175,30
	Energy Joule	4227		3623		3092		2618		2205		1854
19	48,5	833	-5,00	771	0,00	711	-11,90	654	-43,60	600	-99,40	549	-184,10
	Energy Joule	4059		3477		2957		2502		2106		1763
18	46	823	-5,00	761	0,00	702	-12,30	646	-45,00	592	-102,40	542	-189,60
	Energy Joule	3962		3388		2883		2441		2050		1719

SAKO Super Hammerhead 11.7 g Results

SAKO Super Hammerhead 180 grns | energy loss and bullet drop [cm] with different barrel lengths (Hornady Ballistic Calculator) and distances

Velocities were determined - starting from V0 - in each case using the Hornady Ballistic Calculator

SAKO Super Hammerhead 180 gr.
Batch no.: 229164900
Bullet weight: 11.7 g
BC value G1: 0.444
Room temperature: 17°C

Graphic full screen please CLICK on picture

Barrel length Inch	Barrel length cm	V0	Drop	V100	Drop	V200	Drop	V300	Drop	V400	Drop	V500	Drop
25	63,5	880	-5	807	0	746	-10,40	688	-38,90	632	-89,10	579	-165,40
	Energy Joule	4530		3810		3256		2769		2337		1961
24	61	891	-5	802	0	741	-10,60	683	-39,50	628	-90,40	575	-167,80
	Energy Joule	4644		3763		3212		2729		2307		1934
23	58,5	877	-5	800	0	740	-10,70	681	-39,70	626	-90,90	574	-168,70
	Energy Joule	4499		3744		3203		2713		2292		1927
22	56	869	-5	797	0	736	-10,80	678	-40,20	623	-91,90	571	-170,50
	Energy Joule	4418		3716		3169		2689		2271		1907
21	53,5	858	-5	786	0	726	-11,20	668	-41,60	614	-94,90	562	-175,90
	Energy Joule	4307		3614		3083		2610		2205		1848
20	51	856	-5	787	0	727	-11,20	669	-41,40	614	-94,50	563	-175,30
	Energy Joule	4287		3623		3092		2618		2205		1854
19	48,5	848	-5	771	0	711	-11,90	654	-43,60	600	-99,40	549	-184,10
	Energy Joule	4207		3477		2957		2502		2106		1763
18	46	835	-5	761	0	702	-12,30	646	-45,00	592	-102,40	542	-189,60
	Energy Joule	4079		3388		2883		2441		2050		1719

Hornady CX Outfitter + Peregrine VLR4 bullet 11.9 g Results

Hornady CX Outfitter + Peregrine VLR4 bullet 183 grns | energy loss and bullet drop [cm] with different barrel lengths (Hornady Ballistic Calculator) and distances

Velocities were determined - starting from V0 - in each case using the Hornady Ballistic Calculator

Hornady CX Outfitter + Peregrine VLR4 bullet 183 grns.
Batch no.: 3220344
Bullet weight: 11.9 g
BC value G1: 0.519
Room temperature: 17°C

Graphic full screen please CLICK on picture

Barrel length Inch	Barrel length cm	V0	Drop	V100	Drop	V200	Drop	V300	Drop	V400	Drop	V500	Drop
25	63,5	854	-5	797	0	742	-10,70	689	-39,70	639	-90,20	591	-166,00
	Energy Joule	4339		3779		3276		2825		2430		2078
24	61	842	-5	785	0	731	-11,20	679	-41,30	628	-93,50	581	-171,90
	Energy Joule	4218		3667		3179		2743		2347		2008
23	58,5	834	-5	778	0	723	-11,50	671	-42,30	622	-95,70	575	-175,80
	Energy Joule	4139		3601		3110		2679		2302		1967
22	56	833	-5	777	0	723	-11,60	671	-42,50	621	-96,00	574	-176,40
	Energy Joule	4129		3592		3110		2679		2295		1960
21	53,5	825	-5	769	0	715	-12,00	664	-43,50	614	-98,30	567	-180,50
	Energy Joule	4050		3519		3042		2623		2243		1913
20	51	813	-5	757	0	704	-12,40	653	-45,10	604	-101,80	558	-186,80
	Energy Joule	3933		3410		2949		2537		2171		1853
19	48,5	804	-5	749	0	696	-12,90	645	-46,50	596	-104,70	550	-192,00
	Energy Joule	3846		3338		2882		2475		2114		1800
18	46	798	-5	743	0	690	-13,10	640	-47,30	591	-106,50	546	-195,30
	Energy Joule	3789		3285		2833		2437		2078		1774

LFB 3 Band Classic 9.2 g Results

LFB 3 Band Classic 143 grns | Energy loss and bullet drop [cm] with different barrel lengths (Hornady Ballistic Calculator) and distances

Velocities were determined - starting from V0 - in each case using the Hornady Ballistic Calculator

LFB 3 Band Classic 143 gr.
Batch no.: 106114
Bullet weight: 9.2 g
BC value G1: 0.432
Room temperature: 17°C

Graphic full screen please CLICK on picture

Barrel length Inch	Barrel length cm	V0	Drop	V100	Drop	V200	Drop	V300	Drop	V400	Drop	V500	Drop
25	63,5	983	-5	908	0	837	-7,20	769	-28,80	705	-67,70	644	-127,80
	Energy Joule	4445		3793		3223		2720		2286		1908
24	61	974	-5	899	0	828	-7,40	761	-29,50	697	-69,30	637	-130,70
	Energy Joule	4364		3718		3154		2664		2235		1867
23	58,5	961	-5	887	0	817	-7,70	750	-30,60	687	-71,80	627	-135,10
	Energy Joule	4248		3619		3070		2588		2171		1808
22	56	932	-5	859	0	791	-8,50	725	-33,30	663	-77,50	605	-145,60
	Energy Joule	3996		3394		2878		2418		2022		1684
21	53,5	939	-5	866	0	797	-8,40	731	-32,70	669	-76,10	610	-143,00
	Energy Joule	4056		3450		2922		2458		2059		1712
20	51	929	-5	857	0	788	-8,60	723	-33,60	661	-78,20	602	-146,80
	Energy Joule	3970		3378		2856		2405		2010		1667
19	48,5	916	-5	844	0	776	-9,10	712	-34,90	650	-81,10	592	-152,10
	Energy Joule	3860		3277		2770		2332		1944		1612
18	46	902	-5	831	0	764	-9,50	700	-36,30	639	-84,20	581	-157,80
	Energy Joule	3743		3177		2685		2254		1878		1553

NORMA TipStrike 11 g Results

NORMA TipStrike 170 grns | Energy loss and bullet drop [cm] with different barrel lengths (Hornady Ballistic Calculator) and distances

Velocities were determined - starting from V0 - in each case using the Hornady Ballistic Calculator

NORMA TipStrike 170 grn
Batch no.: 0031218-00
Bullet weight: 11 g
BC value G1: 0.454
Room temperature: 17°C

Graphic full screen please CLICK on picture

Barrel length Inch	Barrel length cm	V0	Drop	V100	Drop	V200	Drop	V300	Drop	V400	Drop	V500	Drop
25	63,5	963	-5	892	0	825	-7,60	761	-29,90	700	-70,00	643	-131,30
	Energy Joule	5101		4376		3743		3185		2695		2274
24	61	945	-5	875	0	809	-8,10	746	-31,50	686	-73,40	629	-137,50
	Energy Joule	4912		4211		3600		3061		2588		2176
23	58,5	939	-5	870	0	804	-8,20	741	-32,10	681	-74,60	624	-139,60
	Energy Joule	4849		4163		3555		3020		2551		2142
22	56	940	-5	870	0	805	-8,30	742	-32,10	682	-74,50	625	-139,40
	Energy Joule	4860		4163		3564		3028		2558		2148
21	53,5	926	-5	857	0	792	-8,70	730	-33,40	670	-77,40	614	-144,60
	Energy Joule	4716		4039		3450		2931		2469		2073
20	51	909	-5	841	0	777	-9,20	715	-35,10	656	-81,10	601	-151,30
	Energy Joule	4545		3890		3321		2812		2367		1987
19	48,5	893	-5	826	0	762	-9,70	701	-36,70	643	-84,60	588	-157,90
	Energy Joule	4386		3753		3194		2703		2274		1902
18	46	886	-5	819	0	756	-10,00	695	-37,60	637	-86,50	583	-161,10
	Energy Joule	4317		3689		3143		2657		2232		1869