Graymist44 - 221 Fireball

This data is being presented for informational purposes only. Care in reloading is a function of knowledge and skill. I suggest reading several reloading manuals before attempting reloading for the first time. I try to always consult at least 4 reloading manuals/sources before loading a cartridge for the first time. Top loads in any reloading data are just that, don't exceed. Always go with the recommended starting loads found in the manuals. With few exceptions my quest is for the load that provides: 1) top accuracy, 2) case life and 3) velocity. I consider them in that order. Sometimes I'm lucky and get all three. Loads in green are my current varmint load(s) for this caliber. Red lettering indicates a maximum load in this gun.

.221 Fireball

August 29, 2007 Tried the Nosler 50 grain BT in the XP100. Using Accurate 1680, Remington cases, Remington 7.5 primers I was able to fire sub inch groups with all loads. Top top loads of 1680 gave normal bolt lift, and primers with well rounded edges. Temps during testing were 90F+.

March 8, 2006 with 40 grain loads using Accurate 1680. Top top loads of 1680 gave normal bolt lift, and primers with well rounded edges. Velocities were a real suprise for a 10.75 inch barrel. This should be a great powder for varmint loads in a rifle barrel.

Remington XP100

Barrel: 10.75"

Bullet Wt	Manufacturer	Powder	Amt	Primer	Case	Velocity	Accuracy
40	Hor Vmax	AA1680	18.5	Rem7.5	Rem	2722	.560@100
40	Hor Vmax	AA1680	19.0	Rem7.5	Rem	2879	1.2@100
40	Hor Vmax	AA1680	19.5	Rem7.5	Rem	2998	1.5@100
40	Hor Vmax	AA1680	20.0	Rem7.5	Rem	3079	.725@100
40	Hor Vmax	AA1680	20.5	Rem7.5	Rem	3100	1.0@100
40	Hor Vmax	H4227	15.5	Rem7.5	Rem	2530	2.2@100
40	Hor Vmax	H4227	16.0	Rem7.5	Rem	2626	1.75@100
40	Hor Vmax	H4227	16.5	Rem7.5	Rem	2712	2.2@100
40	Nosler BT	H4227	16.5	Rem7.5	Rem	2786	2.0@100
40	Sierra BK	H4227	16.5	Rem7.5	Rem	2772	1.4@100
40	Hor Vmax	RL7	17.5	Rem7.5	Rem	2397	1.2@100
40	Hor Vmax	RL7	18.0	Rem7.5	Rem	2463	1.4@100
40	Hor Vmax	RL7	18.5	Rem7.5	Rem	2617	1.6@100
40	Hor Vmax	RL7	19.0	Rem7.5	Rem	2726	1.2@100
50	Nosler BT	AA1680	17.0	Rem7.5	Rem	2582	.235@100
50	Nosler BT	AA1680	17.3	Rem7.5	Rem	2607	.645@100
50	Nosler BT	AA1680	17.5	Rem7.5	Rem	2668	.504@100
50	Nosler BT	AA1680	17.8	Rem7.5	Rem	2709	.874@100

I am always surprised at how accurate the XP100's are. I have shot woodchucks in excess of 200 yards with this one. Remington does not make the XP100 anymore. Above woodchuck was 155 yds distant.

WARNING: Measurements below are for this gun only and are only shown for informational purposes. Measuring your own OAL is the only safe way to be sure you are not exceeding the maximum overall length in your gun.

Bullet	Max OAL	Working OAL	B.C.
Hornady 35 Vmax	1.756	1.725	0.109
Hornady 40 Vmax	1.932	1.900	0.210
Sierra 40 BK		1.930	0.182
Sierra 45 Hornet	1.791	1.761	0.152
Speer 45 Spitzer	1.817	1.785	0.167
Hornady 45 Hornet	1.880	1.850	0.202
Nosler 50 BT	1.960	1.930	0.221